裂缝-孔隙型油藏新的试井模型解

针对裂缝-孔隙油藏的渗流特征,在裂缝和基块之间存在流体的交换;以往的裂缝性油藏并没有考虑流体之间的渗流,仅仅将裂缝和基块之间的流体交换作为源和汇;考虑裂缝与基块之间的渗流建立裂缝-孔隙油藏全耦合的渗流微分方程;该渗流微分方程考虑压差对裂缝和基块的影响,对方程采用无因次化,将方程简化,通过Laplace变换,利用解的迭加原理,获得模型Laplace空间解,这解对理解裂缝-孔隙性油藏的渗流规律和试井分析都具有重要的指导意义。

NEW SOLUTION OF WELL TEST MODEL IN FRACTURE POROUS RESERVOIR

According to the fluid flow character of the fractured-porous reservoir, there is the fluid exchange between the frac-ture and matrix. The fluid flow among the fluids was not con-sidered in fracture reservoir in the past, and only the source and sink was considered in the fluid exchange between the fracture and matrix. The paper established the fluid flow different equa-tion of the full coupled fracture-porosity reservoir in term of the fluid flow between the fracture and matrix, the paper presented the Laplace transform solution in the Laplace space by the prin-ciple of the superposition. It has an important guidance meaning to understand the fluid flow law of the fracture-porosity reser-voir and well testing analysis.