Source: CCTV.com | November 07, 2022, 18:03:15
CCTV News Recently, the "Jingwei Pilot" rotary geosteering system independently developed by Chinese enterprises completed its achievement appraisal. This system has successfully cracked the "neck - stuck" technical challenges of rotary steering, with the overall system reaching the international advanced level. Notably, the measurement accuracy of the steering tool face and azimuthal resistivity has achieved international leading standards.
The rotary geosteering system represents the most cutting - edge and high - end technology in the petroleum engineering field. As the difficulty of exploration and development continues to increase, it plays an irreplaceable role in achieving geological targets and reducing costs while increasing efficiency. Its research, development, and manufacturing involve cutting - edge technologies from more than a dozen fields, including machinery, electronics, software, and geology, earning it the reputation of the "pearl on the crown" of petroleum engineering technology. For a long time, this technology has severely impacted the efficient development of China's oil and gas fields. Through 20 years of arduous research, the scientific research team has successively completed the manufacturing, finalization, and upgrade iterations of nearly 6,000 electronic components and 31 downhole measurement and control program firmware. They have overcome 9 core technologies, formed 4 innovative achievements and 4 innovation points. The system boasts multiple characteristics, such as high reliability, wide adaptability, multi - parameter measurement, complementary measurement, logging, and steering functions, precise trajectory control, independent controllability, and obvious cost advantages. It has also effectively driven technological upgrades in domestic electronic manufacturing, high - end mechanical manufacturing, software engineering, and other fields.
Fan Zexin, a research and development engineer for the rotary geosteering project at Sinopec Jingwei Co., Ltd., stated that facing difficult - to - develop reservoirs such as shale gas in southwest China and shale oil in Shengli Oilfield, the rotary geosteering system has unique advantages. It enables the drill bit to accurately navigate through thin reservoirs, improving the reservoir drilling encounter rate and adding a new technological tool for exploration and development.
It is reported that the localization rate of the "Jingwei Pilot" rotary geosteering system exceeds 94%. It can withstand high temperatures (165°C), high pressures (140 MPa), and high vibrations (20 times gravitational acceleration) downhole. Currently, the system has been applied in 65 wells in areas such as shale gas in Sichuan and Chongqing, shale oil in Jiyang, Shengli Oilfield, offshore oil production on land in the Bohai Bay, and complex structural wells in eastern China. It has operated for 5,651 hours, drilled a total of 40,300 meters, shortened the average well - construction cycle by 4.8 days, and achieved a reservoir drilling encounter rate of 96%. This has strongly supported exploration and development, promoted the localization and industrialization of high - end equipment, ensured the independent controllability of key core technologies in the petroleum engineering field, and contributed to safeguarding national energy security and achieving high - level scientific and technological self - reliance.
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