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砂岩油藏纵向上储层多,且各油层物性相差悬殊、流体性质各异、储量分散。油田在笼统注水或多层合采开发过程中,势必会受储层非均质影响,逐渐暴露出注入水单层突进、含水上升快、储量动用程度不均、各层采出程度不等、油藏采收率低等问题。如何提高此类纵向非均质油藏的采收率是当前所面临的重要问题。以油藏数值模拟技术为手段,根据多层合采条件下层间干扰的单因素以及复合因素的敏感性分析,并针对油田实际非均质模型进行了不同开发方式下储层动用特征、开发效果评价以及开发指标对比,推荐了切实可行的开发技术方案、提出了指导油田开发的技术策略和措施。
Sandstone reservoirs have many reservoirs longitudinally, and the physical properties of the reservoirs are quite different. Their fluid properties are different and their reserves are dispersed. Oilfield in general water injection or multi-layer mining process is bound to be affected by heterogeneity of reservoirs, and gradually exposed single breakthrough water injection, aquifer up fast, uneven use of reserves, ranging from the various levels of mining, Low oil recovery and other issues. How to improve the recovery rate of such longitudinal heterogeneous reservoirs is an important issue currently facing. Based on the reservoir numerical simulation technique, based on the single factor of inter-layer interference and the sensibility analysis of complex factors, the characteristics of reservoir exploitation under different development modes are studied according to the actual heterogeneity model of oil field. Effect evaluation and comparison of development indexes, recommended practical and feasible development technical solutions, and proposed technical strategies and measures to guide oilfield development.