延长油田H区块剩余油分布规律及开发技术研究

Study on Remaining Oil Distribution and Development Technology in Hezegou Area

为了更好的明确延长油田H区域剩余油的分布特征、开发潜力,以及有效的开发策略,运用油藏工程、动态监测、数值模拟相结合的方法,认识剩余油分布规律及主控因素,进一步揭示剩余油分布特征,为下一步注水开发提供理论基础。依据油藏工程及数值模拟精细描述成果,提出了能够提高采收率的合理注采比及地层压力保持水平,优选出中高含水阶段密井网下合理的开发技术,为研究区高效注水开发提供可靠的技术支撑。

In order to better clarify the distribution characteristics,development potential,and effective development strategies of remaining oil in the region.This study mainly uses a combination of reservoir engineering,dynamic monitoring,and numerical simulation methods to understand the distribution patterns and main controlling factors of residual oil,further revealing the distribution characteristics of residual oil,and providing a theoretical basis for the next step of water injection development.Based on the fine description results of reservoir engineering and numerical simulation,a reasonable injection production ratio and formation pressure maintenance level that can improve oil recovery are proposed.Reasonable development technology policies under dense well networks in the medium and high water cut stages are selected,providing reliable technical support for efficient water injection development in the research area.