新疆石油地质

新疆石油地质 ›› 2001, Vol. 22 ›› Issue (5): 441-443.

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确定气井不同开发阶段无阻流量的简易方法—以长庆气田陕7井为例

高松厚1, 郝玉鸿2, 王东旭2   

  1. 1.长庆石油学校,甘肃宁县 745217;
    2.中国石油长庆油田分公司勘探开发研究院,陕西西安 710021
  • 收稿日期:2001-04-10 出版日期:2001-10-01 发布日期:2020-09-27
  • 作者简介:高松厚（1964-）,男,山东龙口人,讲师,石油地质。

A Simple Method for Determination of Gas Well's Non Resistivity Flow During Different Producing Stages-an example from well Shan7in Changqing gasfield

GAO Song-hou, HAO Yu-hong, WANG Dong-xu   

  • Received:2001-04-10 Online:2001-10-01 Published:2020-09-27
  • About author:GAO Song-hou(1964-), Male, Lecturer, Petroleum Geology, Changqing Petroleum institute, Ningxian, Gansu, 745217, China .

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摘要： 随着气井地层压力的下降,无阻流量不断降低,因此,气井在不同开发阶段,对应有不同的无阻流量。为避免气井在不同开发阶段多次重复进行产能试井,降低开发和测试成本,基于对气井二项式产能方程的研究,提出了在气井开发相对短期内不考虑二项式系数A、B的变化:当地层压力下降幅度较大时,由于天然气偏差系数和粘度变化的影响,使其二项式系数产生较大改变,为此推导出计算不同地层压力下二项式系数的公式。这样,在气井不同开发阶段,通过简单的计算便可得到较为可靠的无阻流量。实例计算表明,该方法简便易行、实用有效。

关键词: 地层压力, 试井, 二项式, 无阻流量, 偏差, 系数, 粘度

Abstract: Non-resistivity flow in a gas well may be decreasing constantly with the formation pressure lowering.Therefore，a gas well has its different non- resistivity flows in different producing stages. In order to avoid multiple and repeat productivity well testing to a gas well in different producing stages, this paper presented the formula for calculating binomial cofficient in different formation pressures, based on the binomial productivity-calculated equation for gas wells, by which more reasonable non-resistivity flows of gas wells in different producing stages can be simply obtained. Field case application showed that the method is simple and practical to use.

Key words: formation pressure, well test, binomial, open flow capacity, deviation, coefficient, viscosity

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