高含水期油藏液流方向优化及流线模拟

Fluid flow direction optimization and streamline simulation for high water reservoir

李才学¹ 沈曦² 贾卫平³ 毛立华² 朱黎明²

中国石化中原油田分公司采油六厂，山东 东明 274515 中国石化中原油田分公司勘探开发研究院，河南 濮阳 457001 中国石化中原油田分公司采油一厂，河南 濮阳 457172

No.6 Oil Production Plant, Zhongyuan Oilfield Company, SINOPEC, Dongming 274515, China Research Institute of Exploration and Development, Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China No.1 Oil Production Plant, Zhongyuan Oilfield Company, SINOPEC, Puyang 457172, China

目前国内大部分油田已经进入高含水开发、剩余油零星分布阶段，造成该现象的主要原因是由于储层平面非均质性、水驱波及程度的不同。为了提高水驱开发效果，需要对液流方向优化进行研究，进一步提高水驱采收率。该次研究以中原油田某高含水油藏为研究对象，将数值模拟和最优理论相结合，建立了基于改进的CRM模型为驱动、EnOpt集合优化为最优化手段，以经济效益为目标函数的液流方向自动化优化方法，从而量化油藏配产配注。以相控精细地质模型为基础，利用流线模拟器进行开发指标预测，确定油井泄流面积、注水井水驱波及面积、水驱速度、井间储层波及面积和井间储层含水等参数。

Because of the planar heterogeneity and different water flooding degree, most oil fields in China have already entered into high water cut development stage, and the residual oil distributes sparsely. In order to optimize the water flooding development, the direction of fluid flow needs to be optimized to improve water drive recovery efficiency. Combining the numerical simulation and optimal theory, based on improved CRM model and EnOpt set optimization, taking economic benefit as the objective function, reservoir production and injection proration are quantified in a high water cut reservoir in Zhongyuan Oilfield. Development indexes are predicted by phased fine geological model and streamline simulator. The parameters about product well drainage area, water flooding sweep area of injection well, water flooding speed, inter-well reservoir sweep area and inter-well reservoir water are studied.

10.6056/dkyqt201505021