天然气地球科学

• 天然气开发 • 上一篇    下一篇

一种新的考虑应力敏感影响的三项式产能方程

肖香姣,毕研鹏,王小培,高杰,常志强,张建业   

  1. 1.中国石油塔里木油田分公司勘探开发研究院,新疆  库尔勒  841000;
    2.西南石油大学“油气藏地质及开发工程”国家重点实验室,四川  成都  610500
  • 收稿日期:2013-11-25 修回日期:2014-01-26 出版日期:2014-05-10 发布日期:2014-05-10
  • 通讯作者: 肖香姣xiaoxj-tlm@petrochina.com.cn E-mail:xiaoxj-tlm@petrochina.com.cn
  • 作者简介:肖香姣(1968-),女,湖北天门人,高级工程师,博士,主要从事油气田开发研究. E-mail:xiaoxj-tlm@petrochina.com.cn.
  • 基金资助:

    国家科技重大专项子课题“塔里木盆地库车前陆冲断带油气开发示范工程”(编号:2011ZX5046-03)资助.

A New Trinomial Deliverability Equation with Consideration of Stress Sensitivity

XIAO Xiang-jiao, BI Yan-peng, WANG Xiao-pei, GAO Jie, CHANG Zhi-qiang, ZHANG Jian-ye   


  1. 1.Tarim Petroleum Exploration Bureau,CNPC,Korla 841000,China;
    2.National Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering of
    Southwestern Petroleum Institute,Chengdu 610500,China
  • Received:2013-11-25 Revised:2014-01-26 Online:2014-05-10 Published:2014-05-10

摘要:

低渗透气藏存在较强的应力敏感性,对大量岩石实验数据回归研究表明,幂函数渗透率应力敏感性经验方程相关性相对较好,但是利用该关系式来研究低渗透气藏气井产能的报道还较少。利用幂函数渗透率应力敏感性经验公式,综合考虑渗透率应力敏感效应、启动压力梯度、紊流效应和表皮系数,建立了一个新的适用于低渗透异常高压气井的三项式产能方程。不同参数组合情况下的气井流入动态曲线对比研究结果表明,应力敏感性、启动压力梯度和紊流效应对低渗透气藏气井产能的影响较大,在产能评价研究时必须予以考虑。

关键词: 应力敏感, 启动压力梯度, 紊流效应, 产能方程, 流入动态曲线

Abstract:

Reservoirs with low permeability always exhibit strong stress-sensitivity.According to the regression of extensive experimental data,power function is suitable for describing the stress sensitivity of reservoir permeability.However,the related reported on productivity of reservoirs with low permeability using power function of permeability is rare.This paper established a novel productivity equation for abnormally high pressure and low permeability reservoirs with consideration of threshold pressure gradient,turbulent effect as well as stress-sensitivity using the power function equation.The inflow performance relationships (IPR) were also plotted under different combination of relevant parameters.These parameters have significant effects on the productivity of low permeability gas wells,which should be taken into account when we assess the deliverability of these reservoirs.

Key words: Stress-sensitivity, Threshold pressure gradient, Turbulent effect, Productivity equation, Inflow performance relationship (IPR)

中图分类号: 

  • TE33

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