岩性油气藏 ›› 2015, Vol. 27 ›› Issue (2): 103–108.doi: 10.3969/j.issn.1673-8926.2015.02.016

• 油气田开发 • 上一篇    下一篇

利用气藏生产指示曲线计算凝析气藏水侵量

陈 军1,秦 柯1,任洪伟2,尹双江3,李 冰4   

  1.  1. 西南石油大学 油气藏地质及开发工程国家重点实验室,成都 610500 ; 2. 中国石油西南油气田分公司重庆气矿,重庆 401330 ; 3. 中国石油煤层气公司 韩城分公司,山西 韩城 715400 ;4. 西南石油大学 材料科学与工程学院,成都 610500
  • 出版日期:2015-03-03 发布日期:2015-03-03
  • 第一作者:陈军( 1968- ),男,硕士,教授,主要从事油气田开发方面的教学和科研工作。 地址:( 610500 )四川省成都市新都区西南石油大学石油与天然气学院。 E-mail : 83011149@qq.com 。
  • 基金资助:

    国家重点基础研究发展计划( 973 )项目“二氧化碳置换页岩气多尺度多场渗流理论”(编号: 2014CB239205 )资助

Estimation of water influx in condensate gas pool by means of productivity index curve

CHEN Jun1, QIN Ke1, REN Hongwei2, Y IN Shuangjiang3, L I Bing4   

  1.  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation , Southwest Petroleum University , Chengdu 610500 ,China ; 2. Chongqing Gas Field , PetroChina Southwest Oil and Gas Filed Company , Chongqing 401330 , China ;3. Hancheng Company , PetroChina Coalbed Gas Company , Hancheng 715400 , Shanxi , China ; 4. School of Materials Science and Engineering , Southwest Petroleum University , Chengdu 610500 , China
  • Online:2015-03-03 Published:2015-03-03

摘要:

水驱凝析气藏在已开发的气田中占有一定比例,其在开发过程中会出现凝析油析出的特殊现象,导致该类气藏水侵量的计算更加复杂。 凝析气藏作为一类特殊气藏,当气藏压力低于露点压力时,流体中会出现反凝析液相物。 基于水驱凝析气藏的生产特征,推导出新型的水驱凝析气藏物质平衡线性方程,
该方程考虑了当凝析气藏压力低于露点压力时析出凝析油对水侵量计算的影响。 利用该方程绘制的生产指示曲线可方便、快速并准确地计算出水驱凝析气藏不同时期的水侵量。 实例应用表明,与其他水驱凝析气藏水侵量计算方法相比,该方法更简便、快捷,而且计算结果准确,实用性强。

关键词: 泥页岩储层, 裂缝(裂隙), 渗透性, 脆性矿物, 可压裂性, 测井响应特征, 苏北盆地

Abstract:

Water drive condensate gas reservoir account for a certain proportion in developed gas field. There is a special phenomenon that this type of gas reservoir could condensate in the progress of development, resulting more complicated calculation of the water influx. As a special gas reservoir for condensate gas reservoir, the retrograde condensation liquid will appear in the fluid when the pressure is below dew point pressure. Based on the production characteristics of condensate gas reservoir, this paper derived a new linear material balance equation of water drive condensate gas reservoir, and it takes the influence of condensate oil on the calculation of water influx in gas reservoir into account when the pressure is below dew point pressure. Production index curve drawn by means of this equation can be used to calculate the water index of condensate gas reservoir in different periods conveniently, fast and accurately. Example application shows that compared with the rest calculation methods, this method is simpler and faster and the calculated result is more accurate and practical.

Key words: shale, fracture, permeability, brittle mineral, fracability, logging response characteristics, Subei Basin

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