复杂断块合理井距确定新方法

A New Method to Define Reasonable Well Spacing in Complex Fault Block

冀东油田属于典型的复杂断块油藏,整体采用注水开发方式。综合运用理论分析、矿场统计等方法,以油砂体钻遇连通方向概率法计算技术合理井距为基础,以复杂断块油藏加密井平均单井增加可采储量与井网密度关系计算经济极限井距为界限,确定了复杂断块注水开发油藏合理开发井距研究的新方法。实例应用表明,该方法可以确定高深南区注水开发的合理井距,提高了水驱储量控制程度和受效井比例,有效指导了注水开发井位的部署与实施。

Jidong Oilfield belongs to typical complex fault- block reservoirs and water flooding has been applied generally. Combining theoretical analysis and field statistics,based on the calculation of reasonable well spacing through probabilistic method of oil sand body encountering connected direction,as well as the calculation of economic limit well spacing according to the relationship between increased recoverable reserves from single well in infill pattern of complex fault block reservoirs and well spacing density,a new method to define reasonable well spacing in complex fault block reservoirs with water flooding applied is presented. The application examples showed that,this method is effective to define the reasonable well spacing in water flooding Gaoshen South area,improve the water flooding controlled reserves and proportion of effected wells,and guide the well location deployment and implementation of water flooding development.