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.
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
关键词
破裂压力
Eaton法
实测法
地应力法
致密储层
fracture pressure,Eaton method,fracture operation,log analysis,tight reservoir