2024.11.04
Four world records!This technology has reached the world's advanced level
A few days ago, Sinopec Jianghan Oilfield completed the drilling and coring work of 5 wells on the east platform of Jiao Pai 66. The cumulative total coring of 5 wells was 1004.7 meters, which set the world record for the longest total coring of a single platform drilling, and the Jiao Pai 66-inspection 5 wells set the world record for the longest continuous coring and coring of a single well in the horizontal section, the longest core length in the horizontal section, the highest average harvest rate of coring in the horizontal section, and the longest coring and coring in a single horizontal section of the long cylinder, marking that the drilling and coring technology in the crack area after shale pressure in Jianghan oilfield has reached the world. Advanced level.
Jiao Pai 66 East Platform is located in Nanmu Village, Jiaoshi Town, Fuling District, Chongqing. Among them, Jiao Pai 66-Inspection 1 well, inspection 2 well, inspection 3 well, and inspection 4 well are directional coring wells in the post-shale pressure crack area, and Jiao Pai 66-inspection 5 well is the first horizontal coring well in the post-shale pressure crack area in China. The purpose is to clarify the characteristics of the three-dimensional crack distribution in the three-dimensional development zone of Jiaoshiba in the Fuling Shale gas field through a variety of coring methods, and at the same time evaluate the potential for further encryption of the well distribution under the conditions of small well spacing.
In order to promote the difficult coring work, Jianghan Oilfield United Petroleum Engineering Technology Research Institute, Zhongyuan Petroleum Engineering Company, Jingwei Company, Shengli Petroleum Engineering Company Drilling Technology Research Institute and many other units have carried out plan demonstration, tool improvement and measure formulation in advance, and established a technical team for drilling and coring after shale gas well pressure.They carry out research around the problem of coring, using the “three-cylinder and six-cylinder connection” coring technology, and strive to explore the ultimate capabilities of long-cylinder coring tools for horizontal wells, improve the stability and efficiency of coring operations, and optimize the combination of coring drilling tools to ensure the smooth progress of coring operations.
Four world records!This technology has reached the world's advanced level
A few days ago, Sinopec Jianghan Oilfield completed the drilling and coring work of 5 wells on the east platform of Jiao Pai 66. The cumulative total coring of 5 wells was 1004.7 meters, which set the world record for the longest total coring of a single platform drilling, and the Jiao Pai 66-inspection 5 wells set the world record for the longest continuous coring and coring of a single well in the horizontal section, the longest core length in the horizontal section, the highest average harvest rate of coring in the horizontal section, and the longest coring and coring in a single horizontal section of the long cylinder, marking that the drilling and coring technology in the crack area after shale pressure in Jianghan oilfield has reached the world. Advanced level.
Jiao Pai 66 East Platform is located in Nanmu Village, Jiaoshi Town, Fuling District, Chongqing. Among them, Jiao Pai 66-Inspection 1 well, inspection 2 well, inspection 3 well, and inspection 4 well are directional coring wells in the post-shale pressure crack area, and Jiao Pai 66-inspection 5 well is the first horizontal coring well in the post-shale pressure crack area in China. The purpose is to clarify the characteristics of the three-dimensional crack distribution in the three-dimensional development zone of Jiaoshiba in the Fuling Shale gas field through a variety of coring methods, and at the same time evaluate the potential for further encryption of the well distribution under the conditions of small well spacing.
In order to promote the difficult coring work, Jianghan Oilfield United Petroleum Engineering Technology Research Institute, Zhongyuan Petroleum Engineering Company, Jingwei Company, Shengli Petroleum Engineering Company Drilling Technology Research Institute and many other units have carried out plan demonstration, tool improvement and measure formulation in advance, and established a technical team for drilling and coring after shale gas well pressure.They carry out research around the problem of coring, using the “three-cylinder and six-cylinder connection” coring technology, and strive to explore the ultimate capabilities of long-cylinder coring tools for horizontal wells, improve the stability and efficiency of coring operations, and optimize the combination of coring drilling tools to ensure the smooth progress of coring operations.
2024.10.24
The testing methods and standards of oil drill pipes mainly include the following points：
1.Testing methods: The testing methods of oil drill pipes usually include non-destructive testing technologies such as UT (ultrasonic testing), MT (magnetic powder testing), RT (ray testing), PT (penetration testing) and eddy current testing.These methods can effectively detect internal defects and surface defects of drill pipes.For example, ultrasonic flaw detection is one of the important methods of non-destructive testing and is an extremely effective testing technology.
2.Testing standards: The testing standards for oil drill pipes include SY/T5446-93, SY/T5447-93, SY/T5448-93, SY/T5449-93 and other Chinese petroleum and natural gas industry standards, as well as API 5DP American Petroleum Institute standards.In addition, there are GB/T20656-2006, NFM87-247-2-2016 , GOST33006.2-2014 and other relevant standards at home and abroad. The above are the main testing methods and standards for oil drill pipes. The application of these methods and standards helps to ensure the quality and reliability of oil drill pipes, thereby ensuring the safety and efficiency of oil extraction.
The testing methods and standards of oil drill pipes mainly include the following points：
1.Testing methods: The testing methods of oil drill pipes usually include non-destructive testing technologies such as UT (ultrasonic testing), MT (magnetic powder testing), RT (ray testing), PT (penetration testing) and eddy current testing.These methods can effectively detect internal defects and surface defects of drill pipes.For example, ultrasonic flaw detection is one of the important methods of non-destructive testing and is an extremely effective testing technology.
2.Testing standards: The testing standards for oil drill pipes include SY/T5446-93, SY/T5447-93, SY/T5448-93, SY/T5449-93 and other Chinese petroleum and natural gas industry standards, as well as API 5DP American Petroleum Institute standards.In addition, there are GB/T20656-2006, NFM87-247-2-2016 , GOST33006.2-2014 and other relevant standards at home and abroad. The above are the main testing methods and standards for oil drill pipes. The application of these methods and standards helps to ensure the quality and reliability of oil drill pipes, thereby ensuring the safety and efficiency of oil extraction.
2024.10.22
Debut!The second generation of ”Xuanji" rotary guidance was successfully applied in Uganda
Recently
“Xuanji” system independently developed by CNOOC
The second generation rotary guide "Welleader2.0”
Successfully applied for the first time in Uganda on the African continent
This is China's high-end oil drilling technology
Another milestone in going abroad
With the deepening of the development of global petroleum resources and the increasing complexity of the reservoir situation, the performance of rotary-guided drilling tools is essential to the efficiency and safety of operations.Compared with the first generation of products, Welleader 2.0 has achieved a significant optimization of a 40% reduction in power consumption and a 70% increase in maximum thrust.This application has received high attention from experts at home and abroad, and experts from all parties in the division have worked together to escort the safe and efficient completion of this operation.
In order to fully guarantee the reliability of the instrument, the maintenance personnel are led by highly skilled and experienced engineers to conduct a comprehensive inspection and testing of the instrument, including testing the implementation of various instructions of Welleader2.0 in a variety of modes, etc., and strictly test and monitor every parameter of its working status.At the same time, the expert team of the Orientation Institute of the Oilfield Technology Research Institute closely cooperated with the inspection and acceptance work of the workshop, adding a strong guarantee for the smooth operation of Welleader 2.0.
During the operation process, Welleader2.0 is in stable condition, the geological guidance signal is stable and reliable, the slope of the formation meets the requirements, and the success rate of instruction transmission is 100%.The high-quality results have won the favor of customers, greatly enhanced the attention and influence of the “Xuanji” brand in the African region, and also established confidence in the subsequent development of the Ugandan market.
With the continuous upgrading and improvement of the ”Xuanji" series of products, China's high-end oil drilling technology will play a more important role on a global scale, contributing more Chinese wisdom and Chinese solutions to the development of the global oil industry.
Debut!The second generation of ”Xuanji" rotary guidance was successfully applied in Uganda
Recently
“Xuanji” system independently developed by CNOOC
The second generation rotary guide "Welleader2.0”
Successfully applied for the first time in Uganda on the African continent
This is China's high-end oil drilling technology
Another milestone in going abroad
With the deepening of the development of global petroleum resources and the increasing complexity of the reservoir situation, the performance of rotary-guided drilling tools is essential to the efficiency and safety of operations.Compared with the first generation of products, Welleader 2.0 has achieved a significant optimization of a 40% reduction in power consumption and a 70% increase in maximum thrust.This application has received high attention from experts at home and abroad, and experts from all parties in the division have worked together to escort the safe and efficient completion of this operation.
In order to fully guarantee the reliability of the instrument, the maintenance personnel are led by highly skilled and experienced engineers to conduct a comprehensive inspection and testing of the instrument, including testing the implementation of various instructions of Welleader2.0 in a variety of modes, etc., and strictly test and monitor every parameter of its working status.At the same time, the expert team of the Orientation Institute of the Oilfield Technology Research Institute closely cooperated with the inspection and acceptance work of the workshop, adding a strong guarantee for the smooth operation of Welleader 2.0.
During the operation process, Welleader2.0 is in stable condition, the geological guidance signal is stable and reliable, the slope of the formation meets the requirements, and the success rate of instruction transmission is 100%.The high-quality results have won the favor of customers, greatly enhanced the attention and influence of the “Xuanji” brand in the African region, and also established confidence in the subsequent development of the Ugandan market.
With the continuous upgrading and improvement of the ”Xuanji" series of products, China's high-end oil drilling technology will play a more important role on a global scale, contributing more Chinese wisdom and Chinese solutions to the development of the global oil industry.
2024.09.19
Rotary-oriented high-end drilling technology and equipment to achieve leapfrog development
The International Energy Network learned from the National Energy Administration that the rotating geological-oriented drilling system, as the core weapon for the guarantee of oil and gas exploration and development projects, has long been a foreign monopoly.After years of independent research and development, our country has developed a series of products and successfully applied them to drilling operations, and our country's high-end drilling technology and equipment have achieved leapfrog development.
The "Xuanji" system has realized large-scale offshore application, with a cumulative operation of more than 1,600 wells and a depth of more than 1.5 million meters, and a one-time well entry success rate of 95%."Xuanji" 2.0 uses the latest generation of downhole control algorithms, integrates a number of intelligent modes such as vertical drilling, anti-support pressure, and slope stabilization, adopts dual-piston independent hydraulic modules, and cooperates with a new generation of hydraulic drive circuits. The power consumption of the system has been significantly reduced and the output of guiding force has been greatly improved, creating a new situation for the application of domestic self-developed equipment for difficult directional well operations.
"Xuanji" system
The stability, reliability and life of the CG STEER-150 system have been further improved. A prototype of a high-temperature and high-slope rotating geological guided drilling system has been developed, and six key core technologies such as “guide module structure design and manufacturing” have been formed, and various indicators have entered the forefront.In shale oil and gas and dense oil and gas in Sichuan, Chongqing, Changqing and other regions, more than 230 wells have been guided in the whole well section, with a cumulative intake of 366,000 meters and an independent productivity of 94.9%, which has realized the effective replacement of the localization of rotary guide tools.
The latitude and longitude rotating geological guidance system breaks through 9 core technologies such as high slope, high reliability, and precise trajectory control in the static push mode, with a localization rate of 94.5%. It has been applied to more than 100 wells and has a depth of nearly 200,000 meters, helping to build a national demonstration zone for Shengli shale oil and the exploration and discovery of shale gas in Sichuan and Chongqing.
Rotary-oriented high-end drilling technology and equipment to achieve leapfrog development
The International Energy Network learned from the National Energy Administration that the rotating geological-oriented drilling system, as the core weapon for the guarantee of oil and gas exploration and development projects, has long been a foreign monopoly.After years of independent research and development, our country has developed a series of products and successfully applied them to drilling operations, and our country's high-end drilling technology and equipment have achieved leapfrog development.
The "Xuanji" system has realized large-scale offshore application, with a cumulative operation of more than 1,600 wells and a depth of more than 1.5 million meters, and a one-time well entry success rate of 95%."Xuanji" 2.0 uses the latest generation of downhole control algorithms, integrates a number of intelligent modes such as vertical drilling, anti-support pressure, and slope stabilization, adopts dual-piston independent hydraulic modules, and cooperates with a new generation of hydraulic drive circuits. The power consumption of the system has been significantly reduced and the output of guiding force has been greatly improved, creating a new situation for the application of domestic self-developed equipment for difficult directional well operations.
"Xuanji" system
The stability, reliability and life of the CG STEER-150 system have been further improved. A prototype of a high-temperature and high-slope rotating geological guided drilling system has been developed, and six key core technologies such as “guide module structure design and manufacturing” have been formed, and various indicators have entered the forefront.In shale oil and gas and dense oil and gas in Sichuan, Chongqing, Changqing and other regions, more than 230 wells have been guided in the whole well section, with a cumulative intake of 366,000 meters and an independent productivity of 94.9%, which has realized the effective replacement of the localization of rotary guide tools.
The latitude and longitude rotating geological guidance system breaks through 9 core technologies such as high slope, high reliability, and precise trajectory control in the static push mode, with a localization rate of 94.5%. It has been applied to more than 100 wells and has a depth of nearly 200,000 meters, helping to build a national demonstration zone for Shengli shale oil and the exploration and discovery of shale gas in Sichuan and Chongqing.
2024.08.09
Oil drilling equipment mainly includes the following types： Drilling rig: It is the heart of drilling machinery, including turntables, cranes, winches, swimming systems, taps, derricks and other components.The turntable transmits power to the drill string and drives the drill bit to rotate and break the rock; the crane and winch are used to lift the drilling tools and lower the casing; the swimming system includes large hooks, swimming pulleys, wire ropes, etc., which are used to hang the drilling tools and control their lifting; the faucet is connected to the drill string to transport the drilling fluid; the derrick provides support. Well control equipment: including blowout preventer, remote console, throttling manifold, well pressure manifold, etc., used to prevent blowout accidents and ensure operation safety. Solid control equipment: including vibrating screens, sand remover, mud remover, centrifuge, liquid storage tank, etc., used to remove harmful solid phases from drilling fluid and ensure stable drilling fluid performance. Mud pump: used to circulate drilling fluid, flush the bottom of the well, cool the drill bit, balance the formation pressure, and carry cuttings back to the wellhead. Diesel generator set: provide power supply for the drilling site. Crane: Used to carry and install heavy objects. Tractor: Used to move drilling rigs and other heavy equipment. Logging instrument: used to monitor and record drilling parameters in real time and analyze formation information. The above equipment work together to complete oil drilling tasks.
Oil drilling equipment mainly includes the following types： Drilling rig: It is the heart of drilling machinery, including turntables, cranes, winches, swimming systems, taps, derricks and other components.The turntable transmits power to the drill string and drives the drill bit to rotate and break the rock; the crane and winch are used to lift the drilling tools and lower the casing; the swimming system includes large hooks, swimming pulleys, wire ropes, etc., which are used to hang the drilling tools and control their lifting; the faucet is connected to the drill string to transport the drilling fluid; the derrick provides support. Well control equipment: including blowout preventer, remote console, throttling manifold, well pressure manifold, etc., used to prevent blowout accidents and ensure operation safety. Solid control equipment: including vibrating screens, sand remover, mud remover, centrifuge, liquid storage tank, etc., used to remove harmful solid phases from drilling fluid and ensure stable drilling fluid performance. Mud pump: used to circulate drilling fluid, flush the bottom of the well, cool the drill bit, balance the formation pressure, and carry cuttings back to the wellhead. Diesel generator set: provide power supply for the drilling site. Crane: Used to carry and install heavy objects. Tractor: Used to move drilling rigs and other heavy equipment. Logging instrument: used to monitor and record drilling parameters in real time and analyze formation information. The above equipment work together to complete oil drilling tasks.
2024.07.29
What chemicals are used in oil drilling?
Chemicals used in the oil drilling process include：
1.Anticorrosive coating: used to protect drilling equipment from corrosion.
2.Flange, gasket, sealant (ring): Used to connect and seal different parts of drilling equipment.
3.Paint, waterproof materials, PV tubes: used for equipment maintenance and protection.
4.Machine pumps, air coolers, compressors, blowers, high and low pressure valves, bearings, drill bits, drill pipes, petroleum drilling pipes, petroleum casing, various specifications of steel pipes: although not chemical products in the traditional sense, these equipment are indispensable in the drilling process.
5.Hydrochloric acid, fungicides, defoamers, potassium chloride, surfactants, clay stabilizers, anti-emulsifiers, retarders, cross-linking agents, activators, iron stabilizers, serotonin crushing agents: These chemicals play an important role in the preparation and treatment of drilling fluids.
The above are some of the main chemicals used in the oil drilling process.It should be noted that with the development of science and technology and technological progress, new chemicals may be developed to improve drilling efficiency and safety.
What chemicals are used in oil drilling?
Chemicals used in the oil drilling process include：
1.Anticorrosive coating: used to protect drilling equipment from corrosion.
2.Flange, gasket, sealant (ring): Used to connect and seal different parts of drilling equipment.
3.Paint, waterproof materials, PV tubes: used for equipment maintenance and protection.
4.Machine pumps, air coolers, compressors, blowers, high and low pressure valves, bearings, drill bits, drill pipes, petroleum drilling pipes, petroleum casing, various specifications of steel pipes: although not chemical products in the traditional sense, these equipment are indispensable in the drilling process.
5.Hydrochloric acid, fungicides, defoamers, potassium chloride, surfactants, clay stabilizers, anti-emulsifiers, retarders, cross-linking agents, activators, iron stabilizers, serotonin crushing agents: These chemicals play an important role in the preparation and treatment of drilling fluids.
The above are some of the main chemicals used in the oil drilling process.It should be noted that with the development of science and technology and technological progress, new chemicals may be developed to improve drilling efficiency and safety.
2024.06.22
There are two main methods of geophysical exploration: geophysical exploration and logging. Geophysical exploration is mainly based on the differences in the physical properties of underground rock formations. Through physical quantity measurement, the geological structure or rock formation properties are studied to find geophysical exploration for oil and natural gas.In petroleum exploration, we mainly rely on geophysical exploration methods to indirectly understand geological structures and rock formation properties in areas covered by topsoil, deserts and seawater without direct exposure of rock formations in order to find oil and gas reservoirs.Logging, also known as geophysical logging or petroleum logging, is referred to as logging.When drilling for oil, logging, also known as completion electrical testing, must be carried out after drilling to the depth of the design well to obtain various petroleum geological and engineering technical data as the original data for the completion and development of oil fields.
There are two main methods of geophysical exploration: geophysical exploration and logging. Geophysical exploration is mainly based on the differences in the physical properties of underground rock formations. Through physical quantity measurement, the geological structure or rock formation properties are studied to find geophysical exploration for oil and natural gas.In petroleum exploration, we mainly rely on geophysical exploration methods to indirectly understand geological structures and rock formation properties in areas covered by topsoil, deserts and seawater without direct exposure of rock formations in order to find oil and gas reservoirs.Logging, also known as geophysical logging or petroleum logging, is referred to as logging.When drilling for oil, logging, also known as completion electrical testing, must be carried out after drilling to the depth of the design well to obtain various petroleum geological and engineering technical data as the original data for the completion and development of oil fields.
2024.05.22
Successful application of the first batch of metallurgical seamless bimetal composite drill pipes in China for ultra-deep wells
On May 7, the reporter learned that the first batch of G105+316L metallurgical seamless bimetal composite drill pipes independently developed by the Engineering Materials Research Institute successfully completed the 6352-meter to 7537-meter ultra-deep drilling field test in the Tahe Block of Northwest Oilfield.The evaluation results of the product application effect show that the overall performance of the drill pipe is good, which provides a new solution for our country to improve the service safety of the drill pipe and extend the service life of the drill pipe in the ultra-high temperature corrosive environment.
In drilling operations, harsh working conditions will cause the anticorrosive coating on the inner wall of the steel drill pipe to brittle and crack and peel off in pieces, clogging the water holes of drilling and logging instruments or drill bits from time to time, which directly affects the progress and quality of drilling operations.In order to actively explore efficient and practical solutions, in 2021, the Institute of Engineering Materials took the lead in the research and development of metallurgical seamless bimetal composite drill pipes in China.Through metallurgical composite billet making technology, researchers combined the G105 steel-grade carbon steel matrix on the outside of the drill pipe with the 316L stainless steel corrosion-resistant layer inside, and successfully developed the first batch of metallurgical seamless bimetal composite drill pipes with a temperature resistance of 300 degrees Celsius and a diameter of 88.9mm outside the pipe, which provides a new tool for the exploration and development of deep and ultra-deep oil and gas resources in our country.
Successful application of the first batch of metallurgical seamless bimetal composite drill pipes in China for ultra-deep wells
On May 7, the reporter learned that the first batch of G105+316L metallurgical seamless bimetal composite drill pipes independently developed by the Engineering Materials Research Institute successfully completed the 6352-meter to 7537-meter ultra-deep drilling field test in the Tahe Block of Northwest Oilfield.The evaluation results of the product application effect show that the overall performance of the drill pipe is good, which provides a new solution for our country to improve the service safety of the drill pipe and extend the service life of the drill pipe in the ultra-high temperature corrosive environment.
In drilling operations, harsh working conditions will cause the anticorrosive coating on the inner wall of the steel drill pipe to brittle and crack and peel off in pieces, clogging the water holes of drilling and logging instruments or drill bits from time to time, which directly affects the progress and quality of drilling operations.In order to actively explore efficient and practical solutions, in 2021, the Institute of Engineering Materials took the lead in the research and development of metallurgical seamless bimetal composite drill pipes in China.Through metallurgical composite billet making technology, researchers combined the G105 steel-grade carbon steel matrix on the outside of the drill pipe with the 316L stainless steel corrosion-resistant layer inside, and successfully developed the first batch of metallurgical seamless bimetal composite drill pipes with a temperature resistance of 300 degrees Celsius and a diameter of 88.9mm outside the pipe, which provides a new tool for the exploration and development of deep and ultra-deep oil and gas resources in our country.
2024.04.30
Domestic experts gathered in Chengdu to discuss the problems of drilling and completion technology innovation From April 25th to 26th, the National Drilling and Completion Technology Seminar and the 21st Petroleum Drilling Institute (Institute) Directors Meeting were held in Chengdu, Sichuan.The conference comprehensively demonstrated the latest research results and practical application cases in the field of domestic oil and gas drilling and completion, analyzed the current problems and challenges, and made suggestions for the efficient exploration and development of oil and gas in our country. Drilling and completion, as an important part of the oil and gas exploration and development engineering technology business chain, is the key technology for discovering oil and gas, liberating oil and gas, and serving to increase storage and production.Focusing on the theme of “Concentrating on scientific and technological innovation to enable high-quality development”, the conference discussed and shared hot issues such as Wamit's deep exploration and development, oil and gas drilling safety and integrity monitoring and early warning technology, and the development of intelligent drilling and completion.The experts at the meeting generally believed that in recent years, China's drilling and completion technology has made great strides, but it still has broad research and application space in terms of intelligent drilling and completion technology and equipment, and key basic materials for high-performance drilling and completion. In view of the new trends in the future development of China's oil and gas industry, experts believe that it is necessary to continue to research on key technologies for ultra-deep drilling to provide engineering and technical support for “advancing to the deep part of the earth”; to use artificial intelligence technology well, accelerate the intelligent software development of drilling and completion, and promote the digital transformation of the oil and gas industry; to anchor green development, accelerate the research and development of environmentally friendly drilling and completion materials, and help China's drilling and completion technology achieve transformation and leapfrog. The conference was co-sponsored by the China Petroleum Institute, China Petroleum Technology Service and Chuanqing Drilling. Three academicians from the Chinese Academy of Engineering and nearly 300 experts and scholars from scientific research institutions, energy central enterprises and institutions of higher learning participated offline, and more than 4,000 oilfield scientific researchers watched through live broadcast.
Domestic experts gathered in Chengdu to discuss the problems of drilling and completion technology innovation From April 25th to 26th, the National Drilling and Completion Technology Seminar and the 21st Petroleum Drilling Institute (Institute) Directors Meeting were held in Chengdu, Sichuan.The conference comprehensively demonstrated the latest research results and practical application cases in the field of domestic oil and gas drilling and completion, analyzed the current problems and challenges, and made suggestions for the efficient exploration and development of oil and gas in our country. Drilling and completion, as an important part of the oil and gas exploration and development engineering technology business chain, is the key technology for discovering oil and gas, liberating oil and gas, and serving to increase storage and production.Focusing on the theme of “Concentrating on scientific and technological innovation to enable high-quality development”, the conference discussed and shared hot issues such as Wamit's deep exploration and development, oil and gas drilling safety and integrity monitoring and early warning technology, and the development of intelligent drilling and completion.The experts at the meeting generally believed that in recent years, China's drilling and completion technology has made great strides, but it still has broad research and application space in terms of intelligent drilling and completion technology and equipment, and key basic materials for high-performance drilling and completion. In view of the new trends in the future development of China's oil and gas industry, experts believe that it is necessary to continue to research on key technologies for ultra-deep drilling to provide engineering and technical support for “advancing to the deep part of the earth”; to use artificial intelligence technology well, accelerate the intelligent software development of drilling and completion, and promote the digital transformation of the oil and gas industry; to anchor green development, accelerate the research and development of environmentally friendly drilling and completion materials, and help China's drilling and completion technology achieve transformation and leapfrog. The conference was co-sponsored by the China Petroleum Institute, China Petroleum Technology Service and Chuanqing Drilling. Three academicians from the Chinese Academy of Engineering and nearly 300 experts and scholars from scientific research institutions, energy central enterprises and institutions of higher learning participated offline, and more than 4,000 oilfield scientific researchers watched through live broadcast.
2024.03.14
General process of oil drilling： After the oil and gas field development plan is determined, enter the development process, which includes two main links: drilling and production.The equipment involved in the drilling link includes drilling rig equipment system (which also includes eight major systems) and logging equipment, and the equipment involved in the production link includes oil production equipment and logging equipment. Before drilling, the location of the drilling (that is, the drilling well position) must first be determined on the ground, and then the foundation for the installation of the drilling rig is laid at the well position and the derrick and drilling rig are installed.During drilling operations, the power of the drilling rig is used to drive the drill pipe and drill bit to rotate, and the drill bit breaks down the encountered rock formations one after another to form a manhole (also known as a borehole).The size of the drilling borehole is determined by the size of the drill bit. While the drill bit is crushing the rock formation, the drilling fluid (commonly known as drilling mud) is injected into the ground through the hollow drill pipe, and a large amount of cuttings generated by the drill bit in the broken formation are brought to the ground by the circulating drilling fluid.After the solid control device on the ground removes the cuttings from the drilling fluid, the drilling fluid is injected into the well again through the drilling pump. The drilling fluid passes through the inner hole of the drill pipe to the water hole of the drill bit, and then returns from the annular space between the well wall and the drill string to the ground.The process of drilling is the process by which the drill bit breaks the rock and the drilling fluid continuously carries out the drill cutters through the circulation and forms the well shaft.After drilling to the design depth, special instruments must be inserted into the well shaft for logging operations. The purpose is to determine the lithology of the underground formation and the location of each oil, gas, and water layer, and then down into a seamless steel pipe (also known as a casing) smaller than the drilling borehole, and inject grout into the annular space between the casing and the well wall to fix the casing on the well wall. The last process is to perforate the casing at the location of the oil layer, artificially forming a channel for underground oil and gas to flow into the casing.When the formation pressure of oil and gas is high, it can flow out of the ground on its own. This kind of well is called a self-injection oil and gas well.When the oil and gas pressure is low, it needs to be sucked from the underground by external force. This kind of well is called a non-self-injection well.In the process of drilling, logging activities can be carried out by cable logging or logging with drilling. To complete the above series of oil drilling workflows, it is necessary to coordinate the operation of the eight subsystems in the drilling rig equipment system.They are: lifting system, rotating system, drilling fluid circulation system, transmission system, control system, power drive system, drilling rig base, drilling rig auxiliary equipment system.
General process of oil drilling： After the oil and gas field development plan is determined, enter the development process, which includes two main links: drilling and production.The equipment involved in the drilling link includes drilling rig equipment system (which also includes eight major systems) and logging equipment, and the equipment involved in the production link includes oil production equipment and logging equipment. Before drilling, the location of the drilling (that is, the drilling well position) must first be determined on the ground, and then the foundation for the installation of the drilling rig is laid at the well position and the derrick and drilling rig are installed.During drilling operations, the power of the drilling rig is used to drive the drill pipe and drill bit to rotate, and the drill bit breaks down the encountered rock formations one after another to form a manhole (also known as a borehole).The size of the drilling borehole is determined by the size of the drill bit. While the drill bit is crushing the rock formation, the drilling fluid (commonly known as drilling mud) is injected into the ground through the hollow drill pipe, and a large amount of cuttings generated by the drill bit in the broken formation are brought to the ground by the circulating drilling fluid.After the solid control device on the ground removes the cuttings from the drilling fluid, the drilling fluid is injected into the well again through the drilling pump. The drilling fluid passes through the inner hole of the drill pipe to the water hole of the drill bit, and then returns from the annular space between the well wall and the drill string to the ground.The process of drilling is the process by which the drill bit breaks the rock and the drilling fluid continuously carries out the drill cutters through the circulation and forms the well shaft.After drilling to the design depth, special instruments must be inserted into the well shaft for logging operations. The purpose is to determine the lithology of the underground formation and the location of each oil, gas, and water layer, and then down into a seamless steel pipe (also known as a casing) smaller than the drilling borehole, and inject grout into the annular space between the casing and the well wall to fix the casing on the well wall. The last process is to perforate the casing at the location of the oil layer, artificially forming a channel for underground oil and gas to flow into the casing.When the formation pressure of oil and gas is high, it can flow out of the ground on its own. This kind of well is called a self-injection oil and gas well.When the oil and gas pressure is low, it needs to be sucked from the underground by external force. This kind of well is called a non-self-injection well.In the process of drilling, logging activities can be carried out by cable logging or logging with drilling. To complete the above series of oil drilling workflows, it is necessary to coordinate the operation of the eight subsystems in the drilling rig equipment system.They are: lifting system, rotating system, drilling fluid circulation system, transmission system, control system, power drive system, drilling rig base, drilling rig auxiliary equipment system.
2024.03.01
Solve the card and solve the problems of drilling operations
On February 29th, with the successful completion of the pipe column of the drilling team, the Bazhou Logging Branch of Jingwei Shengli Logging Company successfully completed the SHB6-5X well drill pipe cutting task of Xinjiang “Deep Ground No. 1”, successfully helping the drilling team solve engineering problems, and set two engineering records for Sinopec's cutting and card-breaking process with the deepest depth (7902.8 meters) and the highest temperature at the bottom of the well (163 degrees Celsius).
The SHB6-5X well is a development well deployed by Northwest Oilfield in the Shunbei Oil and gas Field. It became stuck when drilling to 8518.85 meters.The drilling team was unable to unblock the card by various methods such as movable drilling tools and lifting displacement ring air to relieve congestion, so they urgently contacted Shengli Logging Company for help.
After arriving at the well site, the technical personnel of Shengli Logging Company learned more about the data parameters of the well condition of the well shaft, explained the construction cooperation requirements and precautions, and accurately determined the specific cutting position of 7902.8 meters.After the instrument enters the well, the technical personnel perform fine perforation construction in accordance with the process plan, which takes 7 hours to successfully complete the task of cutting and unlocking the well.
With the increasing number of deep and ultra-deep wells, due to various factors such as complex geological structure and large drilling depth, stuck drilling has become a major problem in the process of drilling, workover and other operations.Based on the characteristics of high temperature, high pressure, ultra-deep, and large well slope in the northwest work area, Shengli Logging Company organized technical experts to carry out research on blasting and cutting technology of ultra-high temperature and high pressure small borehole, and equipped the construction team with 8,500-meter high-temperature cable winch, high-temperature and high-pressure caliper, explosive rod and other equipment and tools to solve the problem of card solving for each work area.
In the past three years, Shengli Logging Company has completed 120 difficult card unlocking tasks such as the blasting construction of Shunbei 5-3 well and the cutting construction of Shunbei Eagle 1 well in the Northwest Industrial Zone and Shengli Industrial Zone successively, setting a number of records such as the deepest blasting and cutting construction in China. The success rate of card unlocking is more than 95%, not only recovering economic losses for Party A, but also relying on its technical advantages, it has walked out of Sinopec and entered many domestic markets.
Solve the card and solve the problems of drilling operations
On February 29th, with the successful completion of the pipe column of the drilling team, the Bazhou Logging Branch of Jingwei Shengli Logging Company successfully completed the SHB6-5X well drill pipe cutting task of Xinjiang “Deep Ground No. 1”, successfully helping the drilling team solve engineering problems, and set two engineering records for Sinopec's cutting and card-breaking process with the deepest depth (7902.8 meters) and the highest temperature at the bottom of the well (163 degrees Celsius).
The SHB6-5X well is a development well deployed by Northwest Oilfield in the Shunbei Oil and gas Field. It became stuck when drilling to 8518.85 meters.The drilling team was unable to unblock the card by various methods such as movable drilling tools and lifting displacement ring air to relieve congestion, so they urgently contacted Shengli Logging Company for help.
After arriving at the well site, the technical personnel of Shengli Logging Company learned more about the data parameters of the well condition of the well shaft, explained the construction cooperation requirements and precautions, and accurately determined the specific cutting position of 7902.8 meters.After the instrument enters the well, the technical personnel perform fine perforation construction in accordance with the process plan, which takes 7 hours to successfully complete the task of cutting and unlocking the well.
With the increasing number of deep and ultra-deep wells, due to various factors such as complex geological structure and large drilling depth, stuck drilling has become a major problem in the process of drilling, workover and other operations.Based on the characteristics of high temperature, high pressure, ultra-deep, and large well slope in the northwest work area, Shengli Logging Company organized technical experts to carry out research on blasting and cutting technology of ultra-high temperature and high pressure small borehole, and equipped the construction team with 8,500-meter high-temperature cable winch, high-temperature and high-pressure caliper, explosive rod and other equipment and tools to solve the problem of card solving for each work area.
In the past three years, Shengli Logging Company has completed 120 difficult card unlocking tasks such as the blasting construction of Shunbei 5-3 well and the cutting construction of Shunbei Eagle 1 well in the Northwest Industrial Zone and Shengli Industrial Zone successively, setting a number of records such as the deepest blasting and cutting construction in China. The success rate of card unlocking is more than 95%, not only recovering economic losses for Party A, but also relying on its technical advantages, it has walked out of Sinopec and entered many domestic markets.
2023.12.13
An in-service oil drill pipe inspection, grading and evaluation method, which includes the following steps：
1. Preparation for oil drill pipe inspection；
2. Data measurement of inner and outer joints of drill pipe；
3. Data measurement of drill pipe body；
4. Inspection and repair of the thread and sealing shoulder surface of the drill pipe joint；
5. Measurement of the straightness of the drill pipe and visual inspection and dredging of the drill pipe water eye；
6. Check the corrosion of the inner wall within 1.2 meters from the internal and external threaded joints of the drill pipe to the center of the pipe body；
Seven, ultrasonic testing of drill pipe；
Eight, electromagnetic induction detection of drill pipe body；
Nine, drill pipe joint thread magnetic powder detection；
10. Review of the corrosion of the inner wall within 1.2 meters of both ends of the drill pipe by electromagnetic flaw detection abnormal test area and endoscope detection；
11. Collation and classification of testing data；
12. Hierarchical statistics and the writing of reports.The beneficial effects of the present invention are: comprehensive and comprehensive testing and grading evaluation of old oil drill pipes in service, which can effectively avoid the status quo of frequent accidents of various types of oil drill pipes in oilfield drilling projects.
An in-service oil drill pipe inspection, grading and evaluation method, which includes the following steps：
1. Preparation for oil drill pipe inspection；
2. Data measurement of inner and outer joints of drill pipe；
3. Data measurement of drill pipe body；
4. Inspection and repair of the thread and sealing shoulder surface of the drill pipe joint；
5. Measurement of the straightness of the drill pipe and visual inspection and dredging of the drill pipe water eye；
6. Check the corrosion of the inner wall within 1.2 meters from the internal and external threaded joints of the drill pipe to the center of the pipe body；
Seven, ultrasonic testing of drill pipe；
Eight, electromagnetic induction detection of drill pipe body；
Nine, drill pipe joint thread magnetic powder detection；
10. Review of the corrosion of the inner wall within 1.2 meters of both ends of the drill pipe by electromagnetic flaw detection abnormal test area and endoscope detection；
11. Collation and classification of testing data；
12. Hierarchical statistics and the writing of reports.The beneficial effects of the present invention are: comprehensive and comprehensive testing and grading evaluation of old oil drill pipes in service, which can effectively avoid the status quo of frequent accidents of various types of oil drill pipes in oilfield drilling projects.
2023.12.13
What is the length of the oil drill pipe? According to the latest drill pipe standard API (general term of the American Petroleum Institute) 5DP specification, the length of oil drill pipe is divided into three types: R1 (6.10~7.01 meters), R2 (8.84~9.75 meters), and R3 (12.19~13.72 meters). An oil drill pipe is a steel pipe with a curved pattern at the tail, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device located at the bottom of the drilling rig.The purpose of the drill pipe is to transport the drilling mud to the drill bit and work with the drill bit to raise, lower or rotate the bottom hole device.The drill pipe must be able to withstand huge internal and external pressure, distortion, bending and vibration.In the process of oil and gas extraction and refining, drill pipes can be used multiple times.
What is the length of the oil drill pipe? According to the latest drill pipe standard API (general term of the American Petroleum Institute) 5DP specification, the length of oil drill pipe is divided into three types: R1 (6.10~7.01 meters), R2 (8.84~9.75 meters), and R3 (12.19~13.72 meters). An oil drill pipe is a steel pipe with a curved pattern at the tail, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device located at the bottom of the drilling rig.The purpose of the drill pipe is to transport the drilling mud to the drill bit and work with the drill bit to raise, lower or rotate the bottom hole device.The drill pipe must be able to withstand huge internal and external pressure, distortion, bending and vibration.In the process of oil and gas extraction and refining, drill pipes can be used multiple times.
2024.08.22 The localization process of the rotary guidance system with high technical content has yet to be promoted
The rotary guidance system (RSS) is a guided drilling system that completes the guidance function in real time with the drill when the drill string rotates and drills.The rotary guidance system is one of the most important cutting-edge equipment in the field of oil drilling engineering today, and it is also the core technology and major equipment to realize the development of oil drilling in the direction of digitization, informationization and automation. It can be widely used in the guidance operations of special drilling processes such as ultra-deep wells, horizontal wells, large displacement wells, and branch wells in land and marine environments.
The rotary guidance system is mainly divided into a pointing system and a push-back system. The push-back type directly provides lateral force to the drill bit near the drill bit, and the pointing type uses the bending of the drill string near the drill bit to point the drill bit to the direction of the control of the trajectory of the borehole.Since the directional rotary guidance system can drill smoother boreholes, it is conducive to reducing friction and torque, and can use larger drilling pressure to increase mechanical drilling speed, which has become the mainstream product in the domestic and foreign markets, with a relatively high market share.
The rotary guidance system can effectively improve drilling speed, safety and borehole trajectory control accuracy, and is one of the main core equipment in the oil and gas extraction industry.In recent years, with the gradual reduction of shallow and easy-to-develop oil and gas resources in China, traditional sliding-guided drilling technology has gradually become difficult to meet the needs of the domestic oil and gas exploration and development industry, while rotary-guided drilling technology has the advantages of high drilling speed, short cycle, low friction resistance, easy regulation, and good borehole formation. The proportion of its applications has gradually increased, and the market demand has also been increasing.However, due to the high cost and high price of rotary guidance systems, and they are mainly used for oil and gas exploration and development in complex environments, the ownership of rotary guidance systems in China is relatively limited.Xinsijie's "2021-2026 Rotary Guidance System Industry Market in-depth Research and Investment Outlook Forecast Analysis Report" shows that the market size of China's rotary Guidance System in 2020 will be 400 million yuan.
At this stage, China CNOOC Oilfield Service Co., Ltd., Liaohe Oilfield Tianyi Petroleum Equipment Co., Ltd., Aerospace Science and Industry Inertial Technology Co., Ltd. and other enterprises have gradually broken the monopoly of foreign enterprises after years of continuous research, and have mastered more and more technologies with independent intellectual property rights. However, there is still a big gap with foreign advanced technologies in terms of tool manufacturing and underground work safety and reliability. The mainstream rotary guidance system products in the domestic market are still provided by oil service giants such as Baker Hughes, Schlumberger, and Halliburton. The localization process of China's rotary guidance system needs to be promoted.
New thinking industry researchers said that in recent years, China's external dependence on oil and gas has continued to rise.Facing the high external dependence of petroleum, PetroChina, Sinopec and CNOOC have included increased oil and gas exploration and development in their work plans.Rotary guidance system is an important guided drilling system, which can effectively overcome the friction, torque and support pressure of the drill string in complex structural drilling applications such as large displacement and horizontal wells, improve the drilling pressure transmission efficiency and mechanical drilling speed, increase the smoothness of the well wall, reduce the difficulty of late construction, shorten the drilling cycle, and have strong practicality and economic benefits.With the continuous acceleration of China's oil and gas extraction process, the demand for domestic rotary guidance systems will continue to grow in the future.
The rotary guidance system (RSS) is a guided drilling system that completes the guidance function in real time with the drill when the drill string rotates and drills.The rotary guidance system is one of the most important cutting-edge equipment in the field of oil drilling engineering today, and it is also the core technology and major equipment to realize the development of oil drilling in the direction of digitization, informationization and automation. It can be widely used in the guidance operations of special drilling processes such as ultra-deep wells, horizontal wells, large displacement wells, and branch wells in land and marine environments.
The rotary guidance system is mainly divided into a pointing system and a push-back system. The push-back type directly provides lateral force to the drill bit near the drill bit, and the pointing type uses the bending of the drill string near the drill bit to point the drill bit to the direction of the control of the trajectory of the borehole.Since the directional rotary guidance system can drill smoother boreholes, it is conducive to reducing friction and torque, and can use larger drilling pressure to increase mechanical drilling speed, which has become the mainstream product in the domestic and foreign markets, with a relatively high market share.
The rotary guidance system can effectively improve drilling speed, safety and borehole trajectory control accuracy, and is one of the main core equipment in the oil and gas extraction industry.In recent years, with the gradual reduction of shallow and easy-to-develop oil and gas resources in China, traditional sliding-guided drilling technology has gradually become difficult to meet the needs of the domestic oil and gas exploration and development industry, while rotary-guided drilling technology has the advantages of high drilling speed, short cycle, low friction resistance, easy regulation, and good borehole formation. The proportion of its applications has gradually increased, and the market demand has also been increasing.However, due to the high cost and high price of rotary guidance systems, and they are mainly used for oil and gas exploration and development in complex environments, the ownership of rotary guidance systems in China is relatively limited.Xinsijie's "2021-2026 Rotary Guidance System Industry Market in-depth Research and Investment Outlook Forecast Analysis Report" shows that the market size of China's rotary Guidance System in 2020 will be 400 million yuan.
At this stage, China CNOOC Oilfield Service Co., Ltd., Liaohe Oilfield Tianyi Petroleum Equipment Co., Ltd., Aerospace Science and Industry Inertial Technology Co., Ltd. and other enterprises have gradually broken the monopoly of foreign enterprises after years of continuous research, and have mastered more and more technologies with independent intellectual property rights. However, there is still a big gap with foreign advanced technologies in terms of tool manufacturing and underground work safety and reliability. The mainstream rotary guidance system products in the domestic market are still provided by oil service giants such as Baker Hughes, Schlumberger, and Halliburton. The localization process of China's rotary guidance system needs to be promoted.
New thinking industry researchers said that in recent years, China's external dependence on oil and gas has continued to rise.Facing the high external dependence of petroleum, PetroChina, Sinopec and CNOOC have included increased oil and gas exploration and development in their work plans.Rotary guidance system is an important guided drilling system, which can effectively overcome the friction, torque and support pressure of the drill string in complex structural drilling applications such as large displacement and horizontal wells, improve the drilling pressure transmission efficiency and mechanical drilling speed, increase the smoothness of the well wall, reduce the difficulty of late construction, shorten the drilling cycle, and have strong practicality and economic benefits.With the continuous acceleration of China's oil and gas extraction process, the demand for domestic rotary guidance systems will continue to grow in the future.
2024.08.19// Independent research and development of rotary guidance system to achieve comprehensive industrial-scale application
A few days ago, the “Jingwei Pilot” rotary geological-guided drilling system independently developed by Jingwei Company carried out the construction of the 100th well of this year, the Li Page 5 well in Shengli Industrial Zone, and completed the task of marking the number of annual construction wells two months in advance, marking that the system has fully entered the stage of industrial-scale application, and Sinopec has successfully achieved its research goals in the core technology of rotary guidance.Up to now, it has been applied to 165 wells in total, with a drilling depth of 183,400 meters.
“Research and application of rotating geological-oriented core technology” is the “Ten Dragons” project of the group company. The rotating geological-oriented drilling system of Jingwei Company passed the appraisal of the results organized by the group company in November last year. The technology as a whole has reached the international advanced level, and some have reached the international leading level.
The system has excellent performance in terms of high temperature resistance, high pressure resistance, and vibration resistance. Compared with similar products at home and abroad, it has the advantages of zero-length measurement, high communication accuracy, large applicable displacement, good control effect, and fast on-site assembly.Up to now, the system has realized full-scenario applications such as unconventional shale oil and gas reservoirs, five-stage well-making, offshore drilling platforms, offshore oil and land mining, and has set 30 high indicators and new records. It provides strong technical support for carrying on the core responsibilities of ensuring national energy security and promoting oil and gas exploration and development to speed up cost reduction and efficiency.
A few days ago, the “Jingwei Pilot” rotary geological-guided drilling system independently developed by Jingwei Company carried out the construction of the 100th well of this year, the Li Page 5 well in Shengli Industrial Zone, and completed the task of marking the number of annual construction wells two months in advance, marking that the system has fully entered the stage of industrial-scale application, and Sinopec has successfully achieved its research goals in the core technology of rotary guidance.Up to now, it has been applied to 165 wells in total, with a drilling depth of 183,400 meters.
“Research and application of rotating geological-oriented core technology” is the “Ten Dragons” project of the group company. The rotating geological-oriented drilling system of Jingwei Company passed the appraisal of the results organized by the group company in November last year. The technology as a whole has reached the international advanced level, and some have reached the international leading level.
The system has excellent performance in terms of high temperature resistance, high pressure resistance, and vibration resistance. Compared with similar products at home and abroad, it has the advantages of zero-length measurement, high communication accuracy, large applicable displacement, good control effect, and fast on-site assembly.Up to now, the system has realized full-scenario applications such as unconventional shale oil and gas reservoirs, five-stage well-making, offshore drilling platforms, offshore oil and land mining, and has set 30 high indicators and new records. It provides strong technical support for carrying on the core responsibilities of ensuring national energy security and promoting oil and gas exploration and development to speed up cost reduction and efficiency.
2024.02.01// Independent research and development of rotary-guided drilling system by Daqing Drilling
The rotary-guided drilling system, a cutting-edge automated drilling new technology independently developed by Daqing Drilling and Drilling Engineering Technology Research Institute, has successfully carried out field tests on 23 wells.The technology can control the direction of underground drilling in real time, freely travel through the oil layer thousands of meters underground, and accurately hit the reservoir.
Rotary-guided drilling system is a cutting-edge automated drilling new technology, which represents the highest level of drilling technology development in the world today, and has gradually become an essential technology for complex ultra-deep directional wells and large-displacement horizontal wells.
Pei Fei, the person in charge of the self-developed rotary guidance project of Daqing Institute of Drilling Engineering and Technology, introduced that the system has the characteristics of sliding and rotating, and can determine the location of the reservoir as soon as possible during the drilling construction process, and accurately control the trajectory of the borehole, so that the trajectory is adjusted with the direction of reservoir development.Compared with the use of conventional motor drilling tools, the rotary guide has a more accurate ability to control the trajectory of the borehole, and the formed borehole is smoother, which can effectively reduce the friction torque and the occurrence of complex underground conditions. At the same time, it can greatly increase the length of the horizontal section and improve the efficiency of single well development.
The institute has vigorously carried out technical research, successfully developed a rotary guidance system, and achieved 7 major innovative achievements in power supply, communication, control, and electromechanical-hydraulic integration.Among them, high-power mud power generation and three-phase full-bridge pulse width controllable power supply technology enable the power supply module to stably output 300W of electrical energy under different mud flow rates; non-contact two-way high-efficiency wireless transmission technology of energy and signal realizes efficient wireless transmission of energy and two-way signal communication between relatively high-speed rotating motion carriers; innovative design of command mud negative pulse transmission, processing and reception technology, to achieve accurate reduction of control command numbers; fully closed-loop guidance force real-time vector calculation model, greatly improving the adaptability and stability of the rotary guidance system in underground work; three-dimensional borehole trajectory closed-loop guidance control circuit integration Design technology has formed a three-dimensional trajectory closed-loop guidance control circuit with low electromagnetic interference; low-power, micro-hydraulic guidance module electromechanical-hydraulic integrated technology, reaching the domestic first-class level; measurement and control integrated downhole tool string, realizing the architecture of different modules can be freely combined, expanded and upgraded, and can integrate drilling instruments with different functions.
Up to now, the total on-site test of this technology has a total depth of 6,332 meters, a cumulative working time of 983 hours, a maximum slope of 6.5 degrees per 30 meters, a maximum horizontal section of a single well has a depth of 841 meters, and the sandstone drilling encounter rate is the highest at 86.4%. The average mechanical drilling speed is 129.49% higher than that of LWD construction in the same block, which has laid the foundation for industrial promotion.
The rotary-guided drilling system, a cutting-edge automated drilling new technology independently developed by Daqing Drilling and Drilling Engineering Technology Research Institute, has successfully carried out field tests on 23 wells.The technology can control the direction of underground drilling in real time, freely travel through the oil layer thousands of meters underground, and accurately hit the reservoir.
Rotary-guided drilling system is a cutting-edge automated drilling new technology, which represents the highest level of drilling technology development in the world today, and has gradually become an essential technology for complex ultra-deep directional wells and large-displacement horizontal wells.
Pei Fei, the person in charge of the self-developed rotary guidance project of Daqing Institute of Drilling Engineering and Technology, introduced that the system has the characteristics of sliding and rotating, and can determine the location of the reservoir as soon as possible during the drilling construction process, and accurately control the trajectory of the borehole, so that the trajectory is adjusted with the direction of reservoir development.Compared with the use of conventional motor drilling tools, the rotary guide has a more accurate ability to control the trajectory of the borehole, and the formed borehole is smoother, which can effectively reduce the friction torque and the occurrence of complex underground conditions. At the same time, it can greatly increase the length of the horizontal section and improve the efficiency of single well development.
The institute has vigorously carried out technical research, successfully developed a rotary guidance system, and achieved 7 major innovative achievements in power supply, communication, control, and electromechanical-hydraulic integration.Among them, high-power mud power generation and three-phase full-bridge pulse width controllable power supply technology enable the power supply module to stably output 300W of electrical energy under different mud flow rates; non-contact two-way high-efficiency wireless transmission technology of energy and signal realizes efficient wireless transmission of energy and two-way signal communication between relatively high-speed rotating motion carriers; innovative design of command mud negative pulse transmission, processing and reception technology, to achieve accurate reduction of control command numbers; fully closed-loop guidance force real-time vector calculation model, greatly improving the adaptability and stability of the rotary guidance system in underground work; three-dimensional borehole trajectory closed-loop guidance control circuit integration Design technology has formed a three-dimensional trajectory closed-loop guidance control circuit with low electromagnetic interference; low-power, micro-hydraulic guidance module electromechanical-hydraulic integrated technology, reaching the domestic first-class level; measurement and control integrated downhole tool string, realizing the architecture of different modules can be freely combined, expanded and upgraded, and can integrate drilling instruments with different functions.
Up to now, the total on-site test of this technology has a total depth of 6,332 meters, a cumulative working time of 983 hours, a maximum slope of 6.5 degrees per 30 meters, a maximum horizontal section of a single well has a depth of 841 meters, and the sandstone drilling encounter rate is the highest at 86.4%. The average mechanical drilling speed is 129.49% higher than that of LWD construction in the same block, which has laid the foundation for industrial promotion.
2023.10.13 Innovative record of CNOOC Logging Intelligent rotary Guidance System
On September 8, 2023, in the deep shale gas development area of Zigong, Sichuan, the IDSH intelligent rotary guidance system independently developed by CNOOC logging set a new record of 1695 meters in a single trip and 305 hours of continuous operation in a single operation, realizing the long-term stable and reliable operation of the self-developed rotary geological guidance system of China Petroleum (8.070, 0.07, 0.88%) under harsh working conditions such as high temperature and high pressure, high vibration, and long offset distance.
The shale gas well in this construction operation is a development well deployed by Jilin Oilfield in Zigong. The design depth is 6,517 meters, the vertical depth is 4,249 meters, and the horizontal section is 1,900 meters long.In order to ensure the quality of follow-drilling guidance, CNOOC logging gives full play to the advantages of the scientific research, manufacturing, maintenance, and service industry chain, strengthens the integration of engineering geology, continuously improves and upgrades the regional standardized construction model, and pays close attention to key links such as pre-tool preparation, construction plan design, construction parameter control, and construction detail grasp, so that the reservoir drilling encounter rate reaches 100%.
The IDSH intelligent rotary guidance system independently developed by CNOOC Logging has broken the monopoly of foreign companies on the high-end directional well market and significantly shortened the gap with the world's advanced level.At present, the system has been popularized and applied in more than 30 wells in oil and gas fields such as Changqing, Tarim, Xinjiang, Southwest, Liaohe, etc., with a cumulative working time of more than 9,600 hours. It has effectively solved the problems of easy support pressure, difficult trajectory control, slow drilling speed, and difficulty in extending the horizontal section for horizontal wells and large displacement wells, and provided important equipment and technical support for the economical and efficient development of unconventional and ultra-deep oil and gas reservoirs in our country.
On September 8, 2023, in the deep shale gas development area of Zigong, Sichuan, the IDSH intelligent rotary guidance system independently developed by CNOOC logging set a new record of 1695 meters in a single trip and 305 hours of continuous operation in a single operation, realizing the long-term stable and reliable operation of the self-developed rotary geological guidance system of China Petroleum (8.070, 0.07, 0.88%) under harsh working conditions such as high temperature and high pressure, high vibration, and long offset distance.
The shale gas well in this construction operation is a development well deployed by Jilin Oilfield in Zigong. The design depth is 6,517 meters, the vertical depth is 4,249 meters, and the horizontal section is 1,900 meters long.In order to ensure the quality of follow-drilling guidance, CNOOC logging gives full play to the advantages of the scientific research, manufacturing, maintenance, and service industry chain, strengthens the integration of engineering geology, continuously improves and upgrades the regional standardized construction model, and pays close attention to key links such as pre-tool preparation, construction plan design, construction parameter control, and construction detail grasp, so that the reservoir drilling encounter rate reaches 100%.
The IDSH intelligent rotary guidance system independently developed by CNOOC Logging has broken the monopoly of foreign companies on the high-end directional well market and significantly shortened the gap with the world's advanced level.At present, the system has been popularized and applied in more than 30 wells in oil and gas fields such as Changqing, Tarim, Xinjiang, Southwest, Liaohe, etc., with a cumulative working time of more than 9,600 hours. It has effectively solved the problems of easy support pressure, difficult trajectory control, slow drilling speed, and difficulty in extending the horizontal section for horizontal wells and large displacement wells, and provided important equipment and technical support for the economical and efficient development of unconventional and ultra-deep oil and gas reservoirs in our country.
2023.01.23 Breakthrough in the research and development of “Intelligent flexible rotation guidance System”, a weapon of the country
On January 12, 2021, news came from the site of a major project of the Chinese Academy of Sciences that the “Intelligent flexible rotary guidance System”, a national weapon independently developed by our country, made a major breakthrough in the field test of the 88-11 well of Shengli Oilfield Camp.
The rotary guidance system is known as the “jewel in the crown” of oil drilling technology. It can effectively improve drilling speed, drilling safety and borehole trajectory control accuracy. It is a national weapon for the efficient completion of directional and horizontal wells, and it is also a “killer” technology to improve the efficiency of conventional and unconventional complex oil and gas reservoir exploration and development.Therefore, the research and development of rotary guidance system and related technologies represents the highest level of drilling technology in the world today. At present, only a few companies in the United States have mature products of this technology. It is the most critical “stuck neck” technology facing our petroleum industry.
As early as 2017, the Chinese Academy of Sciences, starting from the major national needs, proactively deployed the “Intelligent guided Drilling Technology and Equipment System and Related theoretical Research” (referred to as intelligent guided drilling) Category A strategic pilot science and technology project, which is led by our institute and jointly researched by Sinopec, PetroChina, CNOOC and universities in related fields. It aims to develop an “intelligent flexible rotary guidance system” and a drilling logging system with independent intellectual property rights in our country.After more than three years of hard work, hundreds of researchers have overcome a series of theoretical and technical problems.This special technological innovation has laid the foundation for the research and development of national heavy weapons and the improvement of the manufacturing capabilities of high-end equipment in China's petroleum industry.
On the basis of overcoming key technologies such as micro-hydraulic control unit and high-precision dynamic measurement of the rotary guidance system, the vertical drilling of the rotary guidance system was successful at the end of 2019. The 551-meter real drilling test was completed in the 101 well of Fan Deep slope in Shengli Oilfield, and the well slope was controlled within 1.5°, which was considered by the oilfield to have the ability to apply vertical drilling engineering.In the challenging 2020, the intelligent guidance research and development team overcame various difficulties, broke through the bottleneck of straight well oblique and high-precision borehole trajectory control technology, and successfully developed a 6.75-inch “intelligent flexible rotary guidance system”.From January 1st to 12th, 2021, with the strong support of Sinopec Shengli Oilfield, the special team conducted a real drilling test of the system in the 88-11 well of Shengli Oilfield Camp.
In this test, tests were carried out at two depths of 1834-1864 meters and 2495-2888 meters. The actual working depth was 423 meters, and the system worked continuously for 101 hours, successfully completing the functions of straight well oblique, stable oblique and torsional orientation.The maximum slope of the guided drilling process is 6.8°/30 meters (the slope of the G3 guided tool of Baker Hughes in the United States is 6~8°/30 meters), and the predetermined target is successfully hit, realizing the high-precision control of the trajectory of the borehole during the drilling process.This actual drilling test not only verified the functionality and reliability of the self-developed “intelligent flexible rotary guidance system”, but also had the ability to complete the “one-trip drilling” engineering and technical services, which laid a solid foundation for large-scale popularization and application.
The successful research and development of this technology is a concrete manifestation of the Chinese Academy of Sciences' self-reliance on science and technology as the support of the national development strategy. It is a successful example of the joint research model of industry, university and research. It will definitely inspire and strengthen the determination and confidence of the R&D team to overcome difficulties.In the next step, the R&D team will concentrate its superior strength and move towards the international cutting-edge “intelligent flexible rotating guidance system” with a higher slope (15°/30 meters) and a smaller size (4.75 inches).
On January 12, 2021, news came from the site of a major project of the Chinese Academy of Sciences that the “Intelligent flexible rotary guidance System”, a national weapon independently developed by our country, made a major breakthrough in the field test of the 88-11 well of Shengli Oilfield Camp.
The rotary guidance system is known as the “jewel in the crown” of oil drilling technology. It can effectively improve drilling speed, drilling safety and borehole trajectory control accuracy. It is a national weapon for the efficient completion of directional and horizontal wells, and it is also a “killer” technology to improve the efficiency of conventional and unconventional complex oil and gas reservoir exploration and development.Therefore, the research and development of rotary guidance system and related technologies represents the highest level of drilling technology in the world today. At present, only a few companies in the United States have mature products of this technology. It is the most critical “stuck neck” technology facing our petroleum industry.
As early as 2017, the Chinese Academy of Sciences, starting from the major national needs, proactively deployed the “Intelligent guided Drilling Technology and Equipment System and Related theoretical Research” (referred to as intelligent guided drilling) Category A strategic pilot science and technology project, which is led by our institute and jointly researched by Sinopec, PetroChina, CNOOC and universities in related fields. It aims to develop an “intelligent flexible rotary guidance system” and a drilling logging system with independent intellectual property rights in our country.After more than three years of hard work, hundreds of researchers have overcome a series of theoretical and technical problems.This special technological innovation has laid the foundation for the research and development of national heavy weapons and the improvement of the manufacturing capabilities of high-end equipment in China's petroleum industry.
On the basis of overcoming key technologies such as micro-hydraulic control unit and high-precision dynamic measurement of the rotary guidance system, the vertical drilling of the rotary guidance system was successful at the end of 2019. The 551-meter real drilling test was completed in the 101 well of Fan Deep slope in Shengli Oilfield, and the well slope was controlled within 1.5°, which was considered by the oilfield to have the ability to apply vertical drilling engineering.In the challenging 2020, the intelligent guidance research and development team overcame various difficulties, broke through the bottleneck of straight well oblique and high-precision borehole trajectory control technology, and successfully developed a 6.75-inch “intelligent flexible rotary guidance system”.From January 1st to 12th, 2021, with the strong support of Sinopec Shengli Oilfield, the special team conducted a real drilling test of the system in the 88-11 well of Shengli Oilfield Camp.
In this test, tests were carried out at two depths of 1834-1864 meters and 2495-2888 meters. The actual working depth was 423 meters, and the system worked continuously for 101 hours, successfully completing the functions of straight well oblique, stable oblique and torsional orientation.The maximum slope of the guided drilling process is 6.8°/30 meters (the slope of the G3 guided tool of Baker Hughes in the United States is 6~8°/30 meters), and the predetermined target is successfully hit, realizing the high-precision control of the trajectory of the borehole during the drilling process.This actual drilling test not only verified the functionality and reliability of the self-developed “intelligent flexible rotary guidance system”, but also had the ability to complete the “one-trip drilling” engineering and technical services, which laid a solid foundation for large-scale popularization and application.
The successful research and development of this technology is a concrete manifestation of the Chinese Academy of Sciences' self-reliance on science and technology as the support of the national development strategy. It is a successful example of the joint research model of industry, university and research. It will definitely inspire and strengthen the determination and confidence of the R&D team to overcome difficulties.In the next step, the R&D team will concentrate its superior strength and move towards the international cutting-edge “intelligent flexible rotating guidance system” with a higher slope (15°/30 meters) and a smaller size (4.75 inches).
2019.11.29
Sinopec's independent rotation guidance technology has achieved a major breakthrough
On November 29, 2019, the SINOMACS ATS Type I rotary guidance instrument independently developed by Sinopec Shengli Petroleum Engineering Company's Drilling Measurement and Control Technology Center was successfully tested in the Shengli Oil Area, marking a major breakthrough in Sinopec's rotary guidance technology.
With the continuous deepening of oil and gas exploration, complex ultra-deep directional wells and large-displacement horizontal wells are increasing day by day.Conventional drilling technology is difficult to meet the construction requirements.Conventional drilling technology is that the upper drilling tool pushes the screw drilling tool with curvature to achieve directional drilling without rotating.However, in the drilling and construction of large-displacement horizontal wells, as the horizontal section lengthens, the support pressure and friction resistance of downhole drilling tools become greater and greater, the trajectory control is difficult, and the mechanical drilling speed is slow.The rotating guide instrument can ensure that the drilling tool can drill in the specified direction in a fully rotating state.Just like installing a steering wheel on a car, on-site engineers can accurately control the trajectory of the borehole to ensure a smoother trajectory of the borehole, better quality of the borehole wall, reduce the risk of stuck drilling, and greatly shorten the well construction cycle, save drilling construction costs, and won the general recognition of the shale gas exploration and development market at home and abroad.
For a long time, international oil service companies such as Schlumberger, Baker Hughes and Halliburton have been occupying the high-end technical service market with rotary guidance systems. Some domestic companies are conducting research and research, but they have not yet formed large-scale promotion and application capabilities.
After years of continuous research and exploration, Sinopec Shengli Petroleum Engineering Company has gradually determined the research goal of static push-back rotary guidance. The R&D team started from the principle design and calculation, and through repeated design experiments, assembly debugging, and simulation verification of mechanical, electronic, and software modules, Sinopec developed the first static push-back rotary guidance system.
In the field test of the 1-2-596 well in Shengli oil area, the test well section was 2070-2417 meters, drilled with 60% guiding force, and the slope reached 4.2°/30 meters, realizing high-precision control of the trajectory; fast pulse data coding was used, the average physical transmission rate reached 1.8bps, and the success rate of transmission reached 95%; a series of rotating guide tools with a total length of 347 meters and a cumulative working time of 52 hours, the four modules of ground monitoring, two-way communication, drilling measurement and downhole guidance control all achieved the ideal results. With a radius of only 10 meters from the bullseye, ensure that the well hits the target smoothly and finishes drilling.
The field test of the independently developed SINOMACS ATS Type I rotary guidance instrument was successful, which effectively verified the functionality, reliability and accuracy of the rotary guidance instrument, marking that Sinopec has broken through the “stuck neck” technology of rotary guidance in the field of oil drilling and mastered the rotary guidance technology with independent intellectual property rights.
Sinopec's independent rotation guidance technology has achieved a major breakthrough
On November 29, 2019, the SINOMACS ATS Type I rotary guidance instrument independently developed by Sinopec Shengli Petroleum Engineering Company's Drilling Measurement and Control Technology Center was successfully tested in the Shengli Oil Area, marking a major breakthrough in Sinopec's rotary guidance technology.
With the continuous deepening of oil and gas exploration, complex ultra-deep directional wells and large-displacement horizontal wells are increasing day by day.Conventional drilling technology is difficult to meet the construction requirements.Conventional drilling technology is that the upper drilling tool pushes the screw drilling tool with curvature to achieve directional drilling without rotating.However, in the drilling and construction of large-displacement horizontal wells, as the horizontal section lengthens, the support pressure and friction resistance of downhole drilling tools become greater and greater, the trajectory control is difficult, and the mechanical drilling speed is slow.The rotating guide instrument can ensure that the drilling tool can drill in the specified direction in a fully rotating state.Just like installing a steering wheel on a car, on-site engineers can accurately control the trajectory of the borehole to ensure a smoother trajectory of the borehole, better quality of the borehole wall, reduce the risk of stuck drilling, and greatly shorten the well construction cycle, save drilling construction costs, and won the general recognition of the shale gas exploration and development market at home and abroad.
For a long time, international oil service companies such as Schlumberger, Baker Hughes and Halliburton have been occupying the high-end technical service market with rotary guidance systems. Some domestic companies are conducting research and research, but they have not yet formed large-scale promotion and application capabilities.
After years of continuous research and exploration, Sinopec Shengli Petroleum Engineering Company has gradually determined the research goal of static push-back rotary guidance. The R&D team started from the principle design and calculation, and through repeated design experiments, assembly debugging, and simulation verification of mechanical, electronic, and software modules, Sinopec developed the first static push-back rotary guidance system.
In the field test of the 1-2-596 well in Shengli oil area, the test well section was 2070-2417 meters, drilled with 60% guiding force, and the slope reached 4.2°/30 meters, realizing high-precision control of the trajectory; fast pulse data coding was used, the average physical transmission rate reached 1.8bps, and the success rate of transmission reached 95%; a series of rotating guide tools with a total length of 347 meters and a cumulative working time of 52 hours, the four modules of ground monitoring, two-way communication, drilling measurement and downhole guidance control all achieved the ideal results. With a radius of only 10 meters from the bullseye, ensure that the well hits the target smoothly and finishes drilling.
The field test of the independently developed SINOMACS ATS Type I rotary guidance instrument was successful, which effectively verified the functionality, reliability and accuracy of the rotary guidance instrument, marking that Sinopec has broken through the “stuck neck” technology of rotary guidance in the field of oil drilling and mastered the rotary guidance technology with independent intellectual property rights.