中国石油陆相页岩油钻井技术现状与发展建议

Current Status and Suggestions for Drilling Technology of CNPC Continental Shale Oil Reservoirs

中-高成熟度页岩油是中国页岩油战略突破的重点领域,加强陆相页岩油勘探开发是保障国家能源供应安全的重要途径。详细介绍了中国石油天然气集团有限公司(简称中国石油)在鄂尔多斯、准噶尔和松辽等盆地页岩油钻井工程技术进展。包括大平台工厂化布井、水平井井身结构优化、分井段“一趟钻”、水平井高性能钻井液、一体化地质导向等关键技术。对标北美先进页岩油钻井技术,分析了国内页岩油钻井在布井方式与井身结构、地质工程一体化及导向技术、钻井提速配套技术、钻井液及固井配套技术等方面的差距和发展趋势。提出了持续推进大平台工厂化作业和优化井身结构、集成配套提速技术、加强地质工程一体化研究和加快新一代导向工具研发攻关等发展建议,以促进陆相页岩油钻井提速、降本、增效,引领页岩油革命工程目标实现。

Shale oil with medium to high maturity is the key field for China's shale oil strategic breakthrough,and strengthening the ex-ploration and development of continental shale oil is an important way to ensure the security of national energy supply.The technical progress of shale oil drilling in Ordos,Junggar and Songliao Basins by China National Petroleum Corporation(CNPC)was introduced in detail,including large platform factory-like well placement,horizontal well casing program optimization,"one-run drilling"in sepa-rate well sections,high-performance drilling fluids for horizontal wells,integrated geological steering and other key technologies.By benchmarking against advanced shale oil drilling technologies in North America,the gap and development trend of shale oil drilling in China were analyzed in terms of well placement and wellbore configuration,geological-engineering integration and steering technolo-gy,supporting technology for accelerating rates of penetration(ROP),drilling fluid and cementing supporting technology.Develop-ment suggestions,such as continuously promoting large platform factory-like operations,optimizing wellbore configurations,integrat-ing ROP acceleration technologies,strengthening research on geological-engineering integration,and accelerating the research and development of new-generation steering tools,were proposed in order to achieve the goals of ROP acceleration,cost reduction,and efficiency improvement in continental shale oil drilling,and moreover,the engineering goals of the shale oil revolution.