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首页> 外文期刊>Journal of natural gas science and engineering >New analytical functions for a skin and storage effect - An insight to decouple fracture half-length and square-root of permeability
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New analytical functions for a skin and storage effect - An insight to decouple fracture half-length and square-root of permeability

机译：皮肤和存储效果的新分析功能-解开裂缝半长和渗透率平方根的见解

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摘要

Several solutions to the double porosity model have been presented. There are solutions for closed outer boundary systems as well as infinite acting boundary conditions with constant rate or constant pressure inner boundary conditions. A common assumption in all of these solutions is that the fracture has a quadrilateral (linear) geometry. Very few solutions exist for cases were the fracture is assumed to have a circular geometry. This is the first work that presents approximate early and late time solutions for flow from fractures that have a circular geometry where the inter porosity transfer function is model with an unsteady state function. The result obtained from this analysis shows that the function behaves in a manner identical to production data from fractured horizontal wells in unconventional reservoirs (including early time data that is usually assumed to be obscured by skin and wellbore/fracture storage effects).
机译：已经提出了双重孔隙度模型的几种解决方案。对于封闭的外边界系统以及具有恒定速率或恒定压力内边界条件的无限作用边界条件，都有解决方案。所有这些解决方案中的一个普遍假设是，裂缝具有四边形（线性）几何形状。对于假设裂缝具有圆形几何形状的情况，几乎没有解决方案。这是为具有圆形几何形状的裂缝（其中孔隙间传递函数是具有非稳态函数模型的裂缝）的流动提供近似早期和晚期解的第一项工作。从该分析获得的结果表明，该函数的行为方式与非常规油藏中压裂水平井的生产数据相同（包括通常被皮肤和井眼/裂缝存储效应所掩盖的早期数据）。

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