“双高”阶段砂岩储层水驱剩余油富集模式模拟

Simulation on Remaining Oil Enrichment Pattern of Sandstone Reservoir Water Drive in Double High Stage

为了研究和明确中高渗透砂岩储层在高含水高采出程度阶段(简称"双高"阶段)剩余油的分布规律和富集模式,采用物理模拟和数值模拟相结合的技术,真实、直观、准确地呈现了江汉盆地潜江凹陷王场油田潜三段北断块储层水驱油的过程和剩余油的分布形态,揭示了其水驱油特征和高含水期剩余油富集模式,模拟了北断块的构造特点、储层物性、水动力场对剩余油的控制作用,研究了储层韵律、隔夹层分布、注采位置对剩余油分布的影响,为北断块这类中高渗透砂岩储层在高含水期进一步精细水驱,改善水驱开发效果和提高原油采收率提供了技术支持。

In order to clarify the distribution and enrichment patterns of the remaining oil of high permea- bility sandstone reservoirs during the stage of high water and high recovery, this study truly and accurately presents water displacing oil process and remaining oil distribution form in the north fault block reservoir Wangchang Oilfield, Qianjiang Depression, Jianghan Basin by physical simulation and numerical simula- tion technology. This simulation reveals the water displacing oil characteristics and remaining oil enrich- ment model of high water cut stage and the structural characteristics of the north fault block, reservoir physical properties and the control of hydrodynamic filed over the remaining oil. The study of the reservoir rhythm, interlayer distribution and the effect of injection position on the remaining oil distribution should provide technical support for the water flooding development and the oil recovery for the middle high per- meability sandstone reservoir of the north fault block in high water cut stage.