胜利油田滩海区窄河道薄层底水油藏注采井网优化

Optimization of Injection-Production Well Pattern for Thin and Bottom Water Reservoir in Narrow River Channel in Tanhai Area in Shengli Oilfield

胜利油田滩海老168区块油藏储集层属薄层河道砂,普遍存在底水,水驱控制程度低,单井产量和采收率较低。在建立区块典型河道模型基础上,利用流线模型优化注采井网,指导区块的注采井网设计,投产后利用实际生产含水数据并结合端点标定技术,重新修正地质模型,优化关键生产参数,为该类油田的合理高效开发提供科学依据。

The thin and bottom water reservoir like Block Lao-68 in Shengli oilfield has more and more contributions in recent years to this oilfield in incremental reserves and production.But such a reservoir is commonly of features such as low water drive control level,low single well yield and low oil recovery.On the basis of the establishment of the geological model of this block,the injection-production well pattern is optimized by streamline model.By which the original geological model is re-corrected,and the key production parameters are optimized,thus providing the scientific basis for reasonable and efficient development of this reservoir.