摘要
试井分析中,外边界定压问题是一大类重要问题,本文在考虑了表皮效应和井筒储存效应后,建立了较严格的均质、水平、等厚圆形地层、外边界定压,中心一口井,开井生产井底压力变化的有效井径数学模型,并导出了拉氏空间解,通过数值反演,算出了此类问题的现代试井分析样版曲线,用于实例分析,结果准确、可靠。
One of the main problems in well test analysis is that of constant pressure at external boundary. Having considered the wellbore storage and skin effects, this paper sets up a rigorous effective wellbore radius mathematical model, which is suitable for the homogeneous and isotopic porous medium and the circular reservoir with constant pressure at external boundary, and gives out a solution to this model in Laplace transform. Through numerical reversion, this paper calculates type-curves for this problem. The results obtained are accurate and reliable.
出处
《西南石油学院学报》
CSCD
1993年第4期51-57,共7页
Journal of Southwest Petroleum Institute
关键词
试井
数学模型
石油开采
Well test
Mathematical model
Constant pressure at external boundary
Type-curve
