变形介质双渗模型非线性流动模拟
THE NONLINEAR FLOW SIMULATION USING DOUBLE PERMEABILITY MODEL IN DEFORMED MEDIA
查看参考文献10篇
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文摘
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在碳酸盐油藏和低渗油藏的渗流问题研究中,传统的研究方法都是假设地层渗透率是常数,然而对于地层渗透率是压力敏感的,这样的假设,对压力的变化将导致较大的误差.研究了应力敏感地层中双渗流动模型的压力不稳定响应,不仅考虑了储层的双渗特征,而且考虑了应力敏感地层中介质的变形,建立了应力敏感地层双孔隙度、双渗透率流动的数学模型,渗透率依赖于孔隙压力变化的流动方程是强非线性的,采用Douglas-Jones预估-校正法获得了圆井定产量生产和定压生产时无限大地层情况下的数值解,并探讨了变形参数和双重介质参数变化时压力变化规律,给出了典型压力曲线图版和应用实例. |
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其他语种文摘
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Fluid flow in hydrocarbon and low permeability reservoirs is traditionally analyzed by assuming that the formation permeability is constant. However, the assumption can result in significant errors in the estimation of temporal and spatial variation of pressures when the formation permeability is pressure sensitive. The transient pressure response of a double porosity and double permeability media that is stress-sensitive is studied. Not only the double permeability feature of oil reservoir but also the deformation of medium in stress-sensitive reservoir is considered, and the mathematical model of the deformation double porosity/double permeability medium is constructed. The dependence of permeability on pore pressure makes the flow equation strongly nonlinear. The numerical solution of a constant-rate production of a finite radius well is obtained by the Douglas-Jones predictor-corrector in an infinitely large system. The change rule of pressure is discussed when the parameters of double porous medium and the parameters of deformation change. The plots of typical pressure variation are given in a few cases, and an application example of the proposed method is also given. |
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来源
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工程力学
,2006,23(7):40-44,18 【核心库】
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关键词
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变形介质
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双渗模型
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渗透率模数
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压力曲线图版
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数值解
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地址
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1.
中国科学院力学研究所, 北京, 100080
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(东营)石油大学, 山东, 东营, 257061
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-4750 |
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学科
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力学;石油、天然气工业 |
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基金
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国家973计划
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山东省自然科学基金
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文献收藏号
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CSCD:2475821
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参考文献 共
10
共1页
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