基于微观渗流机理研究的产液结构优化

发布时间：2018-06-01 09:15

本文选题：高含水 + 微观　；参考：《中外能源》2016年12期

【摘要】：高含水阶段的稳产挖潜是当前油田开发面临的重点工程。针对油田水淹区内剩余油分布及动用条件认识不清等问题,开展了微观渗流机理研究,以微观渗流实验、微观孔隙网络模型为核心,借助微观可视化驱替实验,从定性角度分析剩余油赋存状态;建立了岩石孔道空间构型和微观渗流机理研究的新技术;通过核磁共振驱替实验及微观孔隙网络模拟,定量分析了提液增油的微观机理、微观剩余油分布及动用条件,形成了岩石孔道毛管数及流动能力计算新方法,重新认识微观毛管力束缚型剩余油分布及动用条件;结合数值模拟方法,深入分析了高含水层位剩余油分布规律;采用宏观数值模拟与微观渗流机理有机结合的新方法,形成了产液结构优化新技术。利用该研究成果对目标油田实施针对性挖潜措施,实现年增油9.1×104m~3,对海上同类油田开发具有指导意义。
[Abstract]:It is a key project for oilfield development to tap potential in high water cut stage. Aiming at the problem of unclear understanding of remaining oil distribution and production conditions in waterflooded area of oil field, the study of microscopic seepage mechanism is carried out. The microscopic seepage experiment and micro pore network model are taken as the core, and the microscopic visualization displacement experiment is carried out with the aid of microscopic visualization displacement experiment. In this paper, the occurrence state of residual oil is analyzed qualitatively, a new technique for the study of pore space configuration and microscopic percolation mechanism is established, and the microscopic mechanism of oil extraction is quantitatively analyzed by means of NMR displacement experiment and microscopic pore network simulation. A new method for calculating pore capillary number and flow capacity of rock is formed by distributing and producing conditions of micro residual oil, and the distribution and production conditions of residual oil of micro capillary force binding type are reunderstood, and combined with numerical simulation method, The distribution law of residual oil in high aquifer position is analyzed in depth, and a new technique of optimizing liquid production structure is formed by adopting a new method of combining macroscopic numerical simulation with microscopic seepage mechanism. The application of the research results to the target oil fields, the implementation of targeted potential tapping measures to achieve an annual increase of 9.1 脳 10 ~ 4 m ~ (-1) oil field, which has a guiding significance for offshore development of similar oil fields.
【作者单位】：中海石油(中国)有限公司湛江分公司;
【分类号】：TE312

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