西南石油大学学报(自然科学版) ›› 1993, Vol. 15 ›› Issue (4): 51-57.DOI: 10.3863/j.issn.1000-2634.1993.04.008

• 油气田开发 • 上一篇    下一篇

外边界定压试井分析有效井径模型及其样版曲线

贾永禄   

  1. 开发研究室
  • 收稿日期:1993-05-15 修回日期:1900-01-01 出版日期:1993-11-20 发布日期:1993-11-20

EFFECTIVE WELLBORE RADIUS MODEL WITH CONSTANT PRESSURE AT EXTERNAL BOUNDARY AND ITS TYPE-CURVES IN WELL TEST ANALYSIS

Jia Yong-lu
  

  1. Dept. of Oil Exploitation
  • Received:1993-05-15 Revised:1900-01-01 Online:1993-11-20 Published:1993-11-20

摘要: 试井分析中,外边界定压问题是-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-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。

关键词: 试井解释, 数学模型, 边界定压.样版曲线

Abstract:

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.

Key words: Well test, Mathematical model, Constant Pressure at external boundary, TyPe-curve

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