新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (4): 423-426.

• 油藏工程 • 上一篇    下一篇

考虑气液两相流的凝析气井生产动态研究

覃斌, 李相方, 程时清   

  1. 石油大学,北京102249
  • 收稿日期:2003-10-20 修回日期:2003-12-15 发布日期:2021-01-06
  • 作者简介:覃斌(1975-),男,四川南充人,在读博士研究生.油气田开发,联系电话:010-89734951
  • 基金资助:
    国家973重点基础研究发展规划资助项目(编号:2001CB209108)

Production Performance of Condensate Gas Wells Considering Two-Phase Fluid of Gas and Liquid

TAN Bin, LI Xiang-fang, Cheng Shi-qing   

  1. University of Petroleum, Beijing 102249. China
  • Received:2003-10-20 Revised:2003-12-15 Published:2021-01-06

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摘要： 凝析气藏开发中,反凝析液析出常 常不可避免,由此造成储集层渗流表现出与干气或常规溶解气驱流动不同的特性。目前大多采用单相气或折算方法来进行凝析气井的流入动态预测,理论和现场应用表明,这类方法会带来较大的误差,因其忽略了凝析液析出对气相相对渗透率的影响。尽管众多学者对此进行了大量的理论研究,但由于模型过于复杂或是缺乏严格、全面的理论描述,均限制了其应用。以油气两相渗流的基本理论为基础,可以给出拟稳态形式的流入动态方程,同时还可以对储集层参数分布计算进行严格理论证明。实例应用表明,采用提出的油气两相流入动态方程有助于正确评估凝析气井产能,准确把握储集层动态。

关键词: 凝析气井, 相对渗透率, 饱和度, 生产能力, 动态

Abstract: Retrograde condensed liquid tends to being dropped oul during development of condensate gas reservoirs, thus showing different Alowing characteristics between reservoir percolation and dry gas drive or depletion gas drive. Up to now. most predictions of in-flow performance of a condensate gas well are based on singlc phase gas reduccd me:lhod. However, heoretical and field application indicatc that such a method muy give rise to greater errors owing to ignoring the effect of retrograde condensed liquid precipitation on relative permeability to gas. Although subslautial theoretical sludies have been made,its application still is restrained by ils complcxity and/ or absence o[ strict/ overall theoretical description. 'This paper, on the basis of oil-gas two phase percolation theoty, presents equation of psendo-steady state in-flow perfomance and striet verificalion of calculalions of reservoir distribution parameters. Applied cases show that adopting this equation of IW)-phase in-flow perfor-mance could help more proper estimation of condensate gas productivity and recognition of the reservoir performance.

Key words: condensate gas well, relative permeability, saturation, productivity, performance

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