国内页岩气开采技术进展

Progress of Domestic Shale Gas Extraction Technology

页岩气资源潜力大、寿命长、生产周期长,已成为能源研究领域的热点和突破点。自2009年以来,中国页岩气钻井领域的62a,标志着国内页岩气资源的开发。页岩气储层和常规油藏不同,必须采用先进的技术,特别是对水平井钻井、完井和压裂技术,实现经济高效发展。近年来国内页岩气钻井技术、钻井液技术、固井和压裂技术等,可以为中国页岩气开发的技术基础。讨论了页岩气的发展,技术和环境问题,指出了页岩气技术未来的发展方向。未来,需要结合国内页岩气储层的特点,借鉴新技术、国内外经验,通过优化工具开发、技术支持和水平井钻井技术的解决方案,尽快为页岩气的发展提高;进一步提高油基钻井液体系流变,密封能力,开展水基钻井液体系研究适用于页岩气水平井钻井;研究使用油基钻井液页岩气水平井的现状,进一步提高冲洗液和水泥浆体系和固井技术;分析页岩气水平多级压裂技术的井下工具、工作液及施工技术进展,加强压裂设计动态监测,形成一套完整的钻井、压裂及生产过程中废水等操作,污水和垃圾处理技术,重视环境污染评价页岩气的开采,以确保中国页岩气开发的健康发展。

Shale gas resources have great potential, long life and long production cycle.They have become a hotspot andbreakthrough point in energy research field.Since 2009, China＇s shale gas drilling field in 62 years, marks the development of domesticshale gas resources.Shale gas reservoirs and conventional reservoirs must be developed using advanced technology, especially forhorizontal well drilling, completion and fracturing techniques, to achieve cost-effective development.In recent years domestic shalegas drilling technology, drilling fluid technology, cementing and fracturing technology, etc., it can be the technical basis for thedevelopment of Chinese shale gas.Discussed the development, technical and environmental problems existing in shale gas, and pointedout the future development direction of shale gas technology.In the future, the need to combine the characteristics of domestic shalegas reservoirs, based on the introduction of new technologies, domestic and international experience, through optimization tooldevelopment, technical support and horizontal well drilling technology solutions, as soon as possible for shale gas And further improvethe rheological and sealing ability of oil-based drilling fluid system to carry out water-based drilling fluid system research for shale gashorizontal well drilling ; in the use of oil-based drilling fluid shale gas horizontal wells to further improve the flushing fluid And cementslurry systems and cementing technology.Shale gas level multi-level fracturing technology of underground tools, working fluid andconstruction technology, to strengthen the fracturing frac^ring design dynamic monitoring.The formation of a complete set of drilling,fracturing and production processes such as waste water and other operations, sewage and waste disposal technology, attention toenvironmental pollution assessment of shale gas extraction to ensure the healthy development of shale gas development in China.