[China Instrument Network Instrument R&D] On December 20th, the reporter learned from Sinopec that the near-bit gamma imaging system independently developed by Sinopec Petroleum Engineering Technology Institute was tested under real drilling conditions at Well Tang 1 and Oblique 22 in Linpan Oilfield. Successfully, the site continuously worked for 96 hours and continuously measured 1200 meters. It achieved rapid imaging of gamma 8 sectors and near-bithole inclination measurement within 1 meter of near-bit. This breakthrough marks that Sinopec has mastered the core technology of R&D instrument development and broke the technical monopoly of the international oil service company in this field, which is important for enhancing Sinopec’s high-efficiency horizontal well drilling capability and realizing the breakthrough development of underground intelligent measurement and control technology. significance.
(Image from the Internet, invaded)
Near-bit gamma imaging technology represents the international advanced level of today's petroleum engineering technology. This technology was rated as the best drilling technology award by World Oil in 2012 and is widely used in the current shale gas horizontal well drilling. In the development of the shale gas in Fuling, the technology and rotary orientation were monopolized by internationally renowned oil service companies, providing services only, no sales of equipment, and high operating costs.
The SINOPEC Petroleum Engineering and Technology Research Institute has started near-bit gamma imaging research since 2014. It has received support from several major projects of the national major projects, the Ministry of Science and Technology of the People's Republic of China, and the Beijing Major Project Office. After more than three years of hard work, it has completed its research. Development. The instrument can transmit wirelessly across the screw in both water-based and oil-based mud environments, enabling quick imaging of gamma 8 sectors and near-bithole inclination measurements within 1 meter of the near-bit, which can satisfy the current geosteering of horizontal wells in shale formations. demand.
The system has successively drilled wells in 7 wells in the oil fields of Central Plains, Shengli Linpan and Hangjinqi. The cumulative time for the test was approximately 350 hours. It was found that a series of problems such as low antenna emission efficiency, unreliable antenna high-temperature encapsulation, and antenna winding were solved. The technical problems such as fragile line encapsulation and complex structure of the short pitch of the antenna. At present, the system instrument accuracy and sealing performance fully meet the industrial requirements.
(Original Title: Sinopec Drilling Instrument Development Breaks International Monopoly)