| 摘要: |
| 针对试验获得多孔介质中油气水三相的渗流参数难度较大、经验模型预测不准确的问题,建立水湿油藏近混相状态下的三相渗流网络模型。利用孔隙级模拟方法分析三相渗流过程中可能存在的3种驱替过程,模拟再现不同的饱和路径,得到油气水三相相对渗透率。结果表明:在水湿油藏中,各种驱替结束后最终的油气水分布均为水相占据小孔隙,气相占据大孔隙,油相占据中间孔隙；三相水湿体系中的水相相对渗透率只是含水饱和度的函数,气相相对渗透率和油相相对渗透率不仅与各自的饱和度有关,还与三相饱和历史有关。 |
| 关键词: 三相流 相对渗透率 水湿油藏 三维网络模型 驱替过程 饱和路径 |
| DOI： |
| 分类号::TE 312 |
| 文献标识码:A |
| 基金项目:国家“973”重大基础研究项目(2006CB202404);中国石油大学研究生创新基金项目(B2009-01) |
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| Oil gas water three phase flow simulation in water wet reservoir |
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YANG Yong fei, YAO Jun, WANG Chen chen
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(College of Petroleum Engineering in China University of Petroleum, Qingdao 266555, China)
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| Abstract: |
| It is difficult to get the parameters of oil gas water three phase flow in porous medium using experimental methods, and the present empirical models are usually not very accurate. In view of the above problem, a three phase fluid flow network model for water wet reservoir at near miscible condition was established. The possible three displacement processes in three phase flow were analyzed by using pore scale modeling method. The three phase relative permeability was obtained by simulating different saturation paths. The results show that water occupies small pores, gas occupies large pores and oil occupies intermediate sized pores after all kinds of displacements in water wet reservoir. Water relative permeability is only the function of water saturation. And gas and oil relative permeability are dependent not only on their own saturation and but also on the saturation history of the system. |
| Key words: three phase flow relative permeability water wet reservoir three dimensional network model displacement process saturation path |
