摘要
一次压裂往往能把处理层和遮挡层都给压开,因而就压裂的目的而言存在着裂缝的有效体积问题,裂缝的有效体积是随缝高的无限制扩展而减小的,影响裂缝垂向延伸的关键因素是层间最小主应力差的分布。利用TERRAPRAC全三维压裂设计软件考察了几种典型的最小主应力的纵向分布情况对水力裂缝扩展的影响,从中获得了一些规律性的认识,对压裂设计具有指导意义。
Both of processing and shielding formation are often fractured in one fracturing operation. There is a problem about real volume of fracture and the real volume of reduced fracture varied with the height of fracture in non-confined extension. The key factor of affecting the fracture to extend in vertical is the distribution of mainly minimum stress between formation. The regular knowledge is acquired from making use of Terra-fare fully three-dimensional fracturing devise software and checking out the several typical minimum main stress affecting hydraulic fracture to extend in vertical. This is a great significance in this fracture device.
出处
《钻井液与完井液》
CAS
1998年第4期16-18,共3页
Drilling Fluid & Completion Fluid
关键词
水力压裂
应力场
裂缝延利
油层
油田
Hydraulic Fracture
Stress field
Fracture extending
Fracture Device
Fracture Geometry
