ANALYSIS AND APPLICATION OF CONCAVE PRESSURE-RESTORING CURVES FOR OIL WELL
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摘要: 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。Abstract: 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.
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[1] 冯文光,1986,非达西低速渗流的研究现状与展望,石油勘探与开发,13卷4期,76-80页. [2] 冯文光、葛家理,1985,单一介质,双重介质非定常非达西低速渗流问题,石油勘探与开发,12卷1期,56-62页. [3] 冯文光、葛家理,1986,单一介质、双重介质非达西低速渗流的压力曲线动态特征,石油勘探与开发,13卷5期. [4] 冯文光,1986,天然气非达西低速渗流,天然气工业,3期,41-48页. -
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