川西致密储层单井破裂压力计算方法综合研究  

Comprehensive Study of Calculation Method about Fracture Pressure of a Well in Tight Reservoir in West of Sichuan Province

作　　者：闫长辉 陈青[2] 周文[2] 

机构地区：[1]油气藏地质及开发工程国家重点实验室,四川成都610059 [2]成都理工大学能源学院,四川成都610059

出　　处：《油气井测试》2009年第1期7-9,75,共3页Well Testing

基　　金：国家973项目"多种能源矿产共存成藏(矿)机理与富集分布规律"资助;项目编号:2003CB214600

摘　　要：川西须家河组气藏属于低孔低渗致密深层气藏,地层压力高,5口井压裂施工其中3口井施工未成功。施工时,最高井底压力高达159.6MPa。破裂压力高,影响储层压裂改造。综合Eaton法、实测法和测井法等三种计算方法,对典型井破裂压力进行了预测,得到三口典型井破裂压力在147.0～163.7MPa之间。研究发现,测井资料求取破裂压力使用方便,易于推广。Xujiahe reservoir in West Sichuan is a deep and tight gas reservoir with low porosity,low permeability and high formation pressure. Fracture operations were conducted in 5 wells and 3 of them were failed. The highest bottom hole operating pressure is 159.6MPa. High fracture pressure affects the fracture stimulation. So it is necessary to calculate fracture pressure. Fracture pressures in 3 typical wells are predicted by integration of three methods,i.e. Eaton method,measuring method and log analysis,the results show that the fracture pressures of those 3 typical wells are in between 147.0 MPa and 163.7 MPa; and log analysis is convenient and easily popularized to predict the fracture pressure.

关 键 词：破裂压力 Eaton法 实测法 地应力法 致密储层 

分 类 号：TE257[石油与天然气工程—油气井工程] TE21