多层系断块油藏高含水期剩余油潜力综合评价

舍女寺油田女12-女20断块油藏受储层低渗、非均质性强和构造复杂等因素影响，断块剩余油分布复杂，油层动用程度不均和动用程度低是开发中存在主要问题。对于中高含水多层系非均质砂岩油藏，把单砂层合理井网密度评价和单砂层流动单元评价相结合进行单砂层注采井网适应性分析，再与油藏数值模拟技术相结合，优选EK21、EK22和EK23油组14个目标砂层，在断块东北部找到多个潜力目标区，据此编制了油藏剩余油可调整挖潜方案。完钻的14151调整井取得了较好的效果，油井平均日产大于15t，断块采油速度从0．38％提高到目前的0．82％，证实了该项技术的有效性。

Comprehensive Evaluation of Residual Oil for Multi-Layered Faulted Block at High Watercut Stage

Serious problems （complicated residual oil distribution, the low-rate producing zone and interlayer producing difference）, exist in the low permeability, strong heterogeneity, complicated structure in Nvl2 -20 block, Shenusi oilfield. By comprehensive evaluation of 40 single sand layers based on rational well spacing den- sity , flow unit and reservoir numerical simulation for high water cut, multi-layered heterogeneous sand reservoir, the reservoir development plan is proposed, and focuses on 14 target sands（ EK21 ,EK22 and EK23 ）and several potential areas（ northeast to the block）. The 14 adjustment wells drilled have good prospect with the early stage oil production up to 15 t/per well and the recovery rate climbing up from 0. 38 to 0. 82 ,very effective technology.