中渗油藏相控剩余油分布特征研究及应用

Distribution of remaining oil controlled by facies in medium permeability reservoir and application

沈黎阳¹ 毛立华² 王坤² 赵磊² 王明²

西安石油大学石油工程学院，陕西 西安 710065 中国石化中原油田分公司勘探开发研究院，河南 濮阳 457001）

College of Petroleum Engineering, Xi′an Shiyou University, Xi′an 710065, China Research Institute of Exploration and Development, Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China)

针对中原油田中渗高含水油藏面临的水驱波及不均、不同微相剩余油描述困难、常规剩余油研究方法适应性差等问题，从微观、层内、平面3个方面入手，利用微观可视化室内实验、油藏相控数值模拟等技术手段，对剩余油的赋存状态、分布规律进行了定量描述。研究表明，微观上看，储层的物性决定了剩余油的非均匀分布。针对构型剩余油可采用顶部补孔、换向注水、薄注厚采等措施挖潜；平面剩余油可在相控指导下，通过侧钻、注采结构调整等技术手段进行效益挖潜。

Non-uniform water flooding, difficulty of remaining oil description in different microfacies and the poor adaptability of the conventional remaining oil research method are the three big problems in medium permeability reservoir in high water cut period, Zhongyuan Oilfield. In order to solve these problems, microscopic visualization lab test, reservoir facies controlling numerical simulation are used to reveal the micro-description and macro-description in the reservoir. The results prove that the non-uniform distribution of remaining oil is mainly influenced by the physical properties of reservoir. The architecture remaining oil can be recovered by measures of perforation addition at the top, reversing the direction of water injection, thin-layer injection with thick-layer production. The remaining oil on the plane can be benefitly tapping by the technical means of sidetrack drilling, adjusting the injection-production structure and so on.

10.6056/dkyqt201701007