复杂断块油田断层快速精准定位方法研究

Study on Fast and Accurate Location of Fault in Complex Fault Block

复杂断块油田由于断层极为发育,切割关系复杂,给构造研究带来较大的困难,其储量规模受断层控制.在开发中要合理动用该类油藏,必须精细刻画断层的平面展布特征,为开发井的部署提供依据.根据井型不同,断层类型不同,斜井轨迹沿构造的高低,通过公式法总结了12种模式来精准定位断层在平面上的位置.依靠研究成果,2018—2019年,在WJ油田部署了39口井,累计产油3.25×10~4 t,平均日产油3.5 t,取得了良好的开发效果,为该类油藏的动用提供了技术支撑.

Complex fault block oilfields cause great difficulties for structural research due to their extremely developed faults and complex cutting relationship.The oilfield’s reserve scale is controlled by faults.In order to reasonably use this kind of reservoir in its development,the plane distribution characteristics of faults must be carefully characterized to provide basis for the deployment of wells.According to different well types,different fault types and the height of inclined well trajectory along the structure,this paper summarizes 12 modes by formula method to accurately locate the position of faults on the plane.According to the research results,39 wells were deployed in WJ oilfield from 2018 to 2019,with a cumulative oil production of 3.25×104 t,with an average daily oil production of 3.5 t,which has achieved good development results and can provide technical support for the production of this kind of reservoir.