新疆石油地质

新疆石油地质 ›› 1990, Vol. 11 ›› Issue (2): 140-148.

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确定气井流动效率(FE)的一点法

陈元千   

  1. 北京石油勘探开发科学研究院
  • 收稿日期:1989-10-11 发布日期:2020-05-15

ONE POINT METHOD FOR DETERMINING FLOW EFFICIENCY OF GAS WELL

Chen Yuanqian   

  1. Scientific Research Institute of Petroleum Exploration and Development, Beijing
  • Received:1989-10-11 Published:2020-05-15

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摘要： 流动效率(Flow Efficiency)定义为井的实际采油指数与理想采油指数(S=0)之比。因此,它是判断油、气井完井效率的一个很重要的指标。然而,在以前流动效率的确定,需要关井测试的压力恢复曲线资料。在本文中,利用产能方程推导了气井的流动效率关系式;同时,通过两种IPR方程的综合,提供了确定气井流动效率的一点法。在已知地层压力的条件下,本文方法的应用,仅需要一个工作制度下的气井产量和井底流动压力。

Abstract: Flow efficiency (FE) is defined as the ratio of the actual product! vity index of a well to the ideal productivity index for no skin factor (S = 0). Therefore, it is a very important index for judging completion wel1 efficiency of gas and oil wells. However, determination of FE requires the data from build-up curvetesting before .The relationship formula of FE of gas well is derived in this paper, using deliverability equation. At the same time, one point method for determining FH of gas well from the combination of two IPR equations is presented in this paper. Under given reservoir pressure, application of this method oniy requires production rate and flowing bottom-hole Pressure of gas well in a work system.