新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (1): 65-67.

• 油藏工程 • 上一篇    下一篇

广义反正切微分分布产量递减方程

孙玉凯, 高文君, 刘瑛, 肖志鹏   

  1. 中国石油吐哈油田分公司石油勘探开发研究院,新疆哈密839009
  • 收稿日期:2003-05-23 出版日期:2004-02-01 发布日期:2020-08-06
  • 作者简介:作者简介:孙玉凯4964-), 男,河北沧州人,高级工程师,石油地质。联系电话:0902-2765325

Study on the Generalized Arc-Tangent Distribution Production Decline Equation

SUN Yu-kai, GAO Wen-jun, LIU Ying, XIAO Zhi-peng   

  1. 1. Research Institute of Exploration and Development, Tu-Ha Oilfield Company, PetroChina, Hami, Xinjiang 839009, China
  • Received:2003-05-23 Online:2004-02-01 Published:2020-08-06

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摘要： 针对已有的经典递减方程还不能有效地描述--些油田产量递减曲线出现向右微凸现象和递减率出现先凸后凹”现象,从渗流力学角度导出了一种新型广义产量递减方程。该递减方程不仅能描述递减产量出现陡峭下滑问题,而且也能描述递减初期递减产量向右微凸问题;另一方面既能描述递减率单调递减问题，也能描述先单调递增、后单调递减问题。在此基础上,研究分析了该递减方程及其对应的油相相渗、产量递减率随特征参数的变化特点,从而为选择、应用该类递减方程提供了理论支持,具有理论和现实指导意义。

关键词: 产量递减, 渗流, 相渗透率曲线, 分布, 特征

Abstract: The available classical decline equations can't be used for effectively explaining the production decline curves protruding rightwardslightly and the declining rate curves being convex early and concave later. From fluid mechanics in porous medium, this paper educes a newgeneralized production decline equation for dealing with these problems. Also, it can be used for interpreting both why the monotone decreasingappears in production decline curves and the monotone increasing early and monotone decreasing later in them. Based on these, the paper stud-ies and analyses the decline equation and corresponding relative permeability to oil and production decline rate vary ing with the characteristicparameters. These can prov ide theoretical ground to select and apply the decline equation. This decline equation is directive significance theo-reilkl)y4at0 lslialyAcademic Journal Electronic Publishing House. All rights reserved.

Key words: production decline, percolation, relative permeability curve, distribution, characteristic

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