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以胜二区沙二段８ 单元为研究对象，建立了该开发单元储层物性和原油物性随不同开发阶段变化的数值模型，并在此基础上进行了精细油藏数值模拟研究。研究结果表明，渗透率、原油粘度和密度随不同开发阶段的变化对剩余油分布和油田开发效果影响均较大。对注水开发历史较长的油田，在进行精细油藏数值模拟时，应该考虑渗透率和原油物性随时间的变化，从而为进入注水开发的老油田的挖潜上产提供可靠的决策依据。通过对８单元的精细油藏模拟，掌握了目前该单元的剩余油分布规律和水淹状况，并成功地指导了该单元开发调整方案的设计和实施
Taking Unit 8 of Sha 2 Member in Sheng 2 District as the research object, a numerical model of reservoir physical property and crude oil physical property changes with different development stages was established. Based on this, numerical simulation of fine reservoir was carried out. The results show that permeability, crude oil viscosity and density with different development stages of the changes on the distribution of remaining oil and oil field development effects are large. For oilfields with a long history of waterflooding, during the numerical simulation of fine reservoirs, the permeability and the physical properties of the crude oil should be taken into account over time, so as to provide a reliable basis for decision-making on the potential tapping of the old oilfields for waterflood development. Through the fine reservoir simulation of unit 8, the current remaining oil distribution pattern and flooding status of the unit are grasped and the design and implementation of the unit development and adjustment plan are successfully guided