甄家峁油区特低渗透长6油藏综合调整治理

Adjustment and Governance Optimization of Ultra-low Permeability Chang 6 Reservoir in Zhenjiamao Oilfield

在延长油田的吴起、志丹、定边等分布着岩性低渗透长6油藏,在全油田产量占比较大,属于典型的低渗、低压、低产油藏。该类油藏开发特征为纵向含油小层多,横向连通差,压力传导慢。文章针对研究区存在的注采井网布置合理性差、注采对应率低等问题,采用精细地质研究、优化注采井网、优化配套工艺等手段,对甄家峁油区长6油藏进行综合调整治理,实现了低渗透长6油藏的高效开发,对全油田长6油藏开发具有一定的指导与借鉴意义。

In the Yanchang Oilfield,Wuqi,Zhidan,and Dingbian are distributed with low-permeability Chang 6 oil reservoirs with lithological properties,which account for a relatively large proportion of the production in the entire oilfield,and are typical lowpermeability,low-pressure,and low-yield oil reservoirs.The development of this type of reservoir is characterized by many small vertical oil-bearing layers,poor horizontal connectivity,and slow pressure transmission.This paper aims at the problems of poor injectionproduction well pattern layout and low injection-production response rate in the study area.Fine geological research and optimized injection,the production well pattern,optimized supporting technology and other means,comprehensive adjustment and management of the Chang 6 reservoir in Zhenjiamao Oilfield,realized the efficient development of the low permeability Chang 6 reservoir,and provided certain guidance and guidance to the development of the Chang 6 reservoir in the entire oil field.