煤系气分层合采工艺技术研究  

Research on Layered Co-Mining Technology for Coal Series with Multiple Gas Layers

作　　者：刘凯 余焱群[1] 刘印华[2,3] 王云飞 吴建军 李焕文 LIU Kai;YU Yanqun;LIU Yinhua;WANG Yunfei;WU Jianjun;LI Huanwen(China University of Petroleum(East China),Shandong 266580;Engineering Technology Research Institute,PetroChina Coalbed Methane Company Limited,Shaanxi 710082;China United Coalbed Methane National Engineering Research Center Co.,Ltd.,Beijing 100095)

机构地区：[1]中国石油大学(华东)机电工程学院,山东266580 [2]中石油煤层气有限责任公司工程技术研究院,陕西710082 [3]中联煤层气国家工程研究中心有限责任公司,北京100095

出　　处：《中国煤层气》2024年第3期43-47,共5页China Coalbed Methane

基　　金：中国石油天然气股份有限公司前瞻性基础性技术攻关项目“煤系地层“三气合采”立体开发技术研究”(2021DJ2304)。

摘　　要：针对煤系地层气各层压力体系不同、储层差异性大,常规采气工艺适应性差的问题,提出煤系多气分层合采工艺,进一步提升煤系地层气开发效益。根据研究区煤系气叠置类型,立足“三抽”设备基础,设计了基于空心抽油杆柱的三气合采工艺管柱,实现了“机抽+自喷”组合的同井筒分压分采工艺技术,为煤系地层气煤系气不同压力系统储层同井筒立体开发提供技术参考。Addressing the problems of different pressure systems and great reservoir difference of coal-bearing gas strata,and the poor adaptability of conventional gas production technology,a multi-layer and co-production technology of coal-series gas is put forward to further improve the development benefit of coal-bearing strata gas.According to the superposition type of coal-bearing gas in the study area and utili-zing the foundation of"three-pumping"equipment,a three-gas co-production technology pipe string based on the hllow sucker rod string is designed.The technology of pressure-divided and separate pro-duction in the same shaft with a"three-pumping+self-injection carrying liquid"combination is realized,which provides a technical reference for the three-dimensional development of coal-bearing strata gas res-ervoirs with different pressure systems in the same shaft.

关 键 词：煤系地层气 多气合采工艺 同井筒体系 分层合采 

分 类 号：TE375[石油与天然气工程—油气田开发工程]