油气田开发

应力敏感效应的气井流量动态特征研究

  • 徐兆辉 ,
  • 刘震 ,
  • 王露 ,
  • 梁全胜 ,
  • 常迈
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  • 1.西南石油大学“油气藏地质及开发工程”国家重点实验室; 2.延长油田股份有限公司开发事业部
樊怀才,1983 年生,男,西南石油大学在读博士研究生,从事油气藏工程及渗流理论研究。地址:(610500)四川省成都市新都 区西南石油大学国家重点实验室A412。E-mail:fanhuaicai@163.com

网络出版日期: 2010-12-15

Study on stress sensitivity effect on flow dynamic features of gas wells

  • XU Zhaohui ,
  • LIU Zhen ,
  • WANG Lu ,
  • LIANG Quansheng ,
  • CHANG Mai
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  • 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China; 2 . Exploitation Department, Yanchang Oil and Gas Corporation, Yan’an 716001, China

Online published: 2010-12-15

摘要

在油气藏的开发过程中,特别是对于低渗透油气藏及火山岩油气藏的开发,储层岩石应力敏感性会明显影响油气藏的开发效果。文中考虑了表皮系数及孔隙受应力敏感效应影响而发生变形的问题,利用不稳定渗流理论建立了数学模型,并利用Stehfest 数值反演法得到了模型实空间的解。根据实空间中无因次产量与无因次时间的变化关系,分析了表皮系数、无因次应力敏感系数、封闭边界以及定压边界对气井流量动态特征的影响。研究结果表明,科学合理地开发具有应力敏感效应的气藏,可保证气井和气藏的正常生产。

本文引用格式

徐兆辉 , 刘震 , 王露 , 梁全胜 , 常迈 . 应力敏感效应的气井流量动态特征研究[J]. 岩性油气藏, 2010 , 22(4) : 130 -134 . DOI: 10.3969/j.issn.1673-8926.2010.04.024

Abstract

The rock stress sensitivity will apparently affect the development performance in the process of reservoirs developing, especially in the development of low permeability reservoirs and volcanic reservoirs. The mathematical model is established by using the transient flow theory under the consideration of stress sensitivity and the skin
coefficient, and the solution of the real space is obtained by means of the Stehfest numerical inversion. On the basis of the varying relation between the dimensionless rate and dimensionless time, the influences of skin coefficient, dimensionless stress sensitivity, closed boundary and constant pressure boundary on the dynamic features of gas wells are analyzed. The research result shows that to reasonably develop gas reservoirs with stress sensitivity can make sure of the gas wells and reservoirs producing normally.

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