垂直裂缝井三线性流模型与Cinco-Ley模型

有限导流垂直裂缝井不稳定压力动态响应的计算速度,一直是该模型应用的一个难点。本文的研究表明,将三线性流模型解与拟径向流模型解结合起来是解决这一难点的有效方法。本文给出了拟径向流阶段视表皮系数Sa与无量纲裂缝导流系数FCD、裂缝表皮系数Sf之间的关系曲线,提出了将上述两个模型解结合起来的途径。实例分析结果表明,该计算方法快速、方便、实用。

THREE LINEAR FLOW MODEL AND CINCO-LEY MODEL FOR VERTICAL FRACTURED RESERVOIR

The calculating speed of transient pressure response is always difficult point in application of transient well testing with vertical fracture. Combining three linear flow model with pseudo radial flow model is an effective method to solve this problem. This paper presents the curves among apparent skin factor Sa of pseudo radial flow, dimensionless flow, dimensionless fracture conductivity FCD and fracture skin factor Sf, and introduces a way to integrate two models. Analysls results on practical examples show that this method has advantages of the quick, convenlent and useful.