煤层气压裂裂缝起裂扩展规律研究

我国煤层气资源丰富,裂缝系统复杂。根据常规水力压裂经验进行的地层改造效果时好时坏,难以解释。因此迫切需要对煤层气水力压裂机理进行研究,深入认识煤层气压裂裂缝起裂和扩展规律。在前人研究成果基础上,系统分析了煤岩压裂的主要影响因素及影响规律,研究了目前煤层气压裂裂缝起裂扩展规律的研究进展及存在的主要问题,并对煤层气压裂理论研究的发展方向提出建议。

Research of Coalbed Methane Fracturing Crack Initiation and Propagation Law

Coalbed methane resources is rich in China,fracture system complex.Stratigraphic reconstruction according to conventional hydraulic fracturing experiences is not go well,and no explanation.There is an urgent need for depth research of hydraulic fracture stimulation mechanism in Coalbed methane,and in-depth understanding of coalbed methane fracturing crack propagation law.In summarizes previous experience,introduces the main influence factors and influence of coal and rock fracturing,and the research progress of the current crack propagation law from coalbed methane fracturing,including theoretical research,experimental simulation studies and field experience,and make recommendations on the development direction.