摘要
根据储层压裂改造后易在井筒两翼产生主裂缝椭圆渗流场的机理,通过求得低渗油藏启动压力梯度和裂缝方位,可以确定泄压半径的大小,从而可得到充分控制油藏的井网井距与排距。利用该方法对冷西油藏的泄油半径进行了确定,并部署了新的开发井位。该方法能有效解决低渗透油藏开发采用规则井网难以有效控制储量的问题,对后期注水参数的确定也具有一定指导意义。
After reservoir fracturing,it is easy to form elliptic seepage field around two wings of the wellbore.Based on this mechanism,by acquiring the start-up pressure gradient and the fracture azimuth of low permeability reservoirs,the radius of pressure relief can be determined.And therefore,the well pattern,well spacing and row spacing which fully control the hydrocarbon reservoirs can be obtained.With this method,the drainage radius of Lengxi oil reservoir has been determined and the new development well location has been deployed.This method can not only effectively solve the problem of great difficulty in controlling reserves of low-permeability oil reservoir with regular well pattern,but also has a certain guiding significance for the determination of later water injection parameters.
出处
《石油地质与工程》
CAS
2015年第1期131-132,136,150,共4页
Petroleum Geology and Engineering
关键词
低渗透油藏
泄油半径
冷西油田
low permeability reservoirs
drainage radius
fractures
well spacing
spacing joint
