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中文摘要：
低渗透油层孔隙结构复杂、喉道细小、孔喉比大,非达西现象严重是制约其进一步提高采收率的主要原因.在国内外关于微流体流动、非达西渗流规律等研究成果的基础上,对水驱油微观流动、多孔介质内微观作用力进行了研究,建立了微孔道内固液相互作用条件下的流体黏性系数表达式、二维流动控制方程以及相应边界条件,并进行求解计算,给出了考虑固液作用、不考虑固液作用2种情况下扩张-收缩流道流体的流动规律.数值计算表明,考虑固液作用条件下,对流体速度、切应力和流线分布均有较大程度影响.
英文摘要：
For low-permeability reservoirs, the enhancement of recovery factor is mainly limited by complex pore structure, tiny throat, large pore-throat ratio and serious non-Darey phenomenon. Based on the research of microfluid flow and non-Darcy flow laws at home and abroad, this paper studies the microflow of displacement of oil by water and the micro-acting force in porous medium, establishes the expression of fluid viscidity factor under the condition of solid/liquid interaction in micro pore paths, the gonverning equation for two-dimensional flow and the corresponding boundary conditions, and conducts resolution and computation, giving the flow laws of fluid in expansion-contraction channel under two circumstances with and without considering solid/liquid interaction. Numerical computation shows that when solid/liquid interaction is considered, the fluid velocity, shearing stress and flow line distribution are affected considerably.
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同项目期刊论文
Experimental Study on the Molecular Dimensionand Configuration of Polymer and its Flow Characteristi
Investigation on Mechanisms of Polymer Enhanced Oil Recovery by Nuclear Magnetic Resonance and Micro
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