摘要
针对深煤层压裂中存在的难题,对影响裂缝延伸的因素进行分析,并提出深煤层煤层气水力波及压裂工艺技术,在裂缝中产生更高的净压力,形成高效的复杂裂缝网络;同时,针对深煤层的煤粉发育等特征,在设计中引入"大排量、大前置液量和低砂比"的思路。现场数据显示,采用水力波及压裂工艺的井组排采效果明显,平均产量较其他井大幅提升。
Based on the existing problems in deep CBM fracturing,analyzes the factors that influence the fractures propagation,proposes the hydraulic networks fracturing technology in deep CBM which can create higher net pressure and form efficient and complex fracture networks.Besides,the method of increasing prepad fluid,high delivery rate,low proppant concentration was applied in fracturing design.The field data showed that the method could make a difference with much higher average yield.
作者
薛海飞
朱光辉
张健
王力
曹超
柏冠军
XUE Hai-fei;ZHU Guang-hui;ZHANG Jian;WANG Li;CAO Chao;BAI Guan-jun(China United Coalbed Methane Corporation,Beijing100016,China;China National Offshore Oil Corporation,Beijing100027,China)
出处
《煤炭技术》
CAS
2019年第5期81-84,共4页
Coal Technology
基金
国家科技重大专项(2011ZX05042-002)
中联煤层气有限责任公司青年科技项目(ZLTW2018KJ11)
中国海洋石油总公司青年科技项目(JZTW2019KJ26)
关键词
煤层气
水力波及
压裂
改造体积
参数优化
coalbed methane
hydraulic networks
fracturing
SRV
parameters optimization
