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TZ402CIII是塔中4油田的主要生产单元,油藏类型是带凝析气顶的砂岩底水油藏,分为砾岩段和均质段两段,砾岩段采用天然能量开发,均质段采用注水补充能量。本文总结了TZ402CIII油组两段的开发特征,提出了对向底水中注水的水平井开发的油藏,进入中高含水后油井含水率受注水的影响很大,确定合理的注采比和适当时间进行配注量的调整,是提高驱油效率和稳油控水的主要措施。
TZ402CIII is the main production unit of Tazhong 4 oilfield. The reservoir type is sandstone bottom water reservoir with condensate gas roof. It is divided into two sections of conglomerate section and homogeneous section. The conglomerate section adopts natural energy development and homogeneous section Use water to replenish energy. This paper summarizes the development characteristics of two sections of TZ402CIII oil group and proposes a reservoir developed for horizontal well waterflooding into bottom water. The water cut of oil well after it enters medium-high water cut is greatly affected by water injection, and the reasonable injection-production ratio and appropriate time Adjustment of the amount of dispensing is to improve the efficiency of oil displacement and water control of the main measures.