| CO_2-原油体系混相状态的渗流特性 |
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| 引用本文： | 陈兴隆,秦积舜,张可.CO_2-原油体系混相状态的渗流特性[J].地球科学,2009(5). |
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| 作者姓名： | 陈兴隆 秦积舜 张可 |
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| 作者单位： | 中国石油勘探开发研究院提高石油采率国家重点实验室;中国科学院渗流流体力学研究所; |
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| 基金项目： | 国家“973”项目(No.2006CB705804) |
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| 摘 要： | 为认识混相状态的CO2在油藏中的渗流特征,利用高温高压三维模拟装置对CO2-地层原油体系在油藏环境条件下的混相驱替过程进行研究.实验发现:模型产出液量与注入量存在较大差异;采收率、含水和气油比曲线亦表现出CO2在孔隙介质中渗流的复杂特征.由实时监测的含水饱和度分布场图分析认为:CO2与原油混相后,流体粘度降低、渗流阻力减小,这是提高采收率的重要原因之一;同时,CO2/原油相与部分接触水能形成近似于三相混相的状态.实验研究还表明CO2以高密度气体形式进入饱和水、饱和油无法进入的微孔隙,这是注入量和产出量不一致的主要原因.
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| 关 键 词： | CO2驱 混相状态 平板模型 饱和度 渗流特征 |
Flowing Characteristics of CO_2-Oil System in Miscible Phase Flooding in Porous Media |
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| CHEN Xing-long,QIN Ji-shun,ZHANG Ke .Key Laboratory of EOR National,China Research Institute of Petroleum Exploration & Development,Beijing,China .CNPC , Chinese Academy of Sciences.Flowing Characteristics of CO_2-Oil System in Miscible Phase Flooding in Porous Media[J].Earth Science-Journal of China University of Geosciences,2009(5). |
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| Authors: | CHEN Xing-long QIN Ji-shun ZHANG Ke Key Laboratory of EOR National China Research Institute of Petroleum Exploration & Development Beijing China CNPC Chinese Academy of Sciences |
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| Institution: | CHEN Xing-long1,QIN Ji-shun1,ZHANG Ke2 1.Key Laboratory of EOR National,China Research Institute of Petroleum Exploration & Development,Beijing100083,China 2.CNPC , Chinese Academy of Sciences,Institute of Porous Flow & Fluid Mechanics,Langfang065007,China |
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| Abstract: | At present,oil recovery by CO 2 driving is getting increasingly important.In order to probe into the flow mechanism of CO 2 in miscible state,a high temperature and high pressure 3-D device was used to study miscible flooding of CO 2 and oil.With this experiment,it is found that there is a big difference between the production and the injection volume.The complex flowing characteristics of CO 2 flooding in porous media are observed in the recovery,water cut and gas-oil ratio curves.By analyzing water satura... |
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| Keywords: | CO2 flooding miscible state plate model saturation flowing characteristic |
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