油井凹型压力恢复曲线的分析与应用

ANALYSIS AND APPLICATION OF CONCAVE PRESSURE-RESTORING CURVES FOR OIL WELL

冯文光

Feng Wenguang

成都地质学院石油系

Petroleum Department of Chengdu Geology Institute

本文根据非达西低速渗流的理论,提出了凹型压力恢复曲线的基本公式,并提出了直线分析的两种方法。这两种分析方法的结果是完全一致的。使用这两种方法分析凹形压力恢复曲线,可以获得原始地层压力、渗透率、起始压力梯度、流动系数等储层参数。这两种方法既简便又方便。

A basic formula for concave pressure-restoring curve and two methods of linear analysis are proposed, applying the theory of non-Darcy low speed seepage flow. The results from the two analytical methods are entirely consistent, and several reservoir parameters, i.e the primary stratigraphic essure, permeability, initial pressure gradients and flow coeficient, can be obtained by using the two methods in the analysis of concave pressure-restoring curve. They are simple and convenient.

https://doi.org/10.11781/sysydz199002191