西南石油大学学报(自然科学版) ›› 2003, Vol. 25 ›› Issue (4): 27-29.DOI: 10.3863/j.issn.1000-2634.2003.04.08

• 石油工程 • 上一篇    下一篇

天然裂缝性气藏水平井试井典型曲线计算方法

李晓平1 胡勇2   

  1. (1.西南石油学院石油工程学院,四川 南充 637001; 2.西南油气田分公司开发事业部)
  • 收稿日期:2002-08-21 修回日期:1900-01-01 出版日期:2003-08-20 发布日期:2003-08-20

ALGORITHM OF TYPICAL CURVES OF WELL TEST ANALYSIS FOR HORIZONTAL WELL IN NATURAL FRACTURED GAS RESERVOIR

LI Xiao-ping1 HU Yong2.

  

  1. (Southwest Petroleum Institute, Nanchong Sichuan 637001, China)
  • Received:2002-08-21 Revised:1900-01-01 Online:2003-08-20 Published:2003-08-20

摘要:

考虑井筒储集和表皮效应,建立了天然裂缝性盒型封闭气藏中水平井三维渗流的数学模型,在获得数学模型解的基础上,针对解的复杂性,研究了压力响应的有效计算方法,获得了正确计算每项无穷级数所需的最小收敛项数,基于无穷级数的最小收敛项数,研究了井筒压力响应的计算方法,并且应用数值积分和拉氏反演计算了用于识别渗流特征和试井分析的典型曲线,提出的计算方法对于快速计算天然裂缝性气藏中水平井试井分析的典型曲线具有实用价值。

关键词: 裂缝, 气藏, 试井分析, 数学模型, 典型曲线

Abstract:

The 3-D fluid flow with box-shape-bounded gas reservoir was set up in this paper, which was involved in wellbore storage and skin effect in natural fracture for horizontal well. On the basis of solutions of mathematical model, an effective calculating method of pressure response was studied, minimum convergence item of infinite series were obtained. on the basis of minimum convergence item of infinite series, the typical curves of well test analysis and fluid flow feature by numerical integral and Laplace’s reverse, algorithm presented in this paper is of practical value for fast calculating typical curves of well test analysis of horizontal well in natural fractured gas reservoirs.

Key words: natural fracture, gas reservoir, mathematical model, well test, typical curve

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