成都理工大学学报（自然科学版）2016，Vol.43Issue(6)：696-702,7.DOI:10.3969/j.issn.1671-9727.2016.06.08
天然裂缝对页岩储层网状诱导缝的控制作用
Formation and controlling effect of natural fractures on network induced fractures in shale reservoir
摘要
Abstract
The formation of network fracture system based on the volume transformation technique enhances the effective development of shale gas reservoir and the requisite condition for the formation of network induced fractures is the diversion of induced fractures along natural fractures.Mechanism of diversion regularity of induced fractures is studied through the application of RFPA2D numerical simulation software and in view of the rock mechanics.It shows that the length and orientation affect the difficult level of induced fracture diversion.In fact,the longer the fracture is and the smaller the angle between the fracture and principal stress is,the more likely the diversion of fracture occurs. Meanwhile,the initiating angle of induced fractures also affects the diversion of fractures.The diversion of induced fractures along natural fractures becomes easier when the angle between initiating direction and principal stress becomes larger.The extending regularity of induced fractures in strata with complicated fractures is discussed and the phenomenon of open of natural fractures by induced fractures in forking shape is observed.It proves that the diversion of induced fracture along natural fractures leads to the formation of complex induced fracture system.关键词
页岩/网状裂缝/天然裂缝/体积改造/数值模拟Key words
shale/network fracture/natural fracture/stimulated reservoir volume/numerical simulation分类
能源科技引用本文复制引用
梁利喜,黄静,刘向君,朱洪林,朱哲显..天然裂缝对页岩储层网状诱导缝的控制作用[J].成都理工大学学报（自然科学版）,2016,43(6):696-702,7.基金项目
国家自然科学基金石油化工联合基金重点资助项目（U1262209）；国家自然科学基金资助项目（51274172）；四川省应用基础研究计划项目（2014JY0092）。 （）
