西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (2): 115-120.

• 石油与天然气工程 • 上一篇    下一篇

双重变形介质储层气井流量动态特征研究

樊怀才1, 2 李晓平1, 2 窦天财3 陈军1 袁福锋4   

  1. 1.油气藏地质及开发工程”国家重点实验室 ? 西南石油大学,四川 成都 610500 2. 西南石油大学研究生部,四川 成都 610500 3. 延长油田股份有限公司开发事业部,陕西 延安 716000 4. 中国石油西南油气田分公司川西北气矿,四川 江油 621700
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-04-20 发布日期:2011-04-20

STUDY ON THE FLOWING PERFORMANCE OF GAS WELLS IN DUAL-POROSITY DE-FORMABLE FRACTAL RESERVOIRS

FAN Huai-cai 1,2 LI Xiao-pingi 1,2 DOU Tian-cai 3 CHEN Jun 1 YUAN Fu-feng 4   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; 2. Graduate School, Southwest Petroleum University, Chengdu, Sichuan 610500, China; 3. Exploitation Department, Yanchang Oil and Gas Company Ltd., Yan’an, Shaanxi 716000, China 4. Northwest Sichuan Gas Field, Southwest Oil and Gas Field Company, CNPC, Jiangyou, Sichuan 621700, China)Journal of Southwest Petroleum University,Vol. 33, No. 2, 115 – 120, 2011(1674 – 5086,in Chinese
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-20 Published:2011-04-20

摘要: 在开发双重变形介质油气藏过程中,储层岩石应力敏感性会明显影响油气藏的开发效果。在考虑储层双重介质和变形特性的基础上,引入渗透率应力敏感系数,建立了双重变形介质气藏不稳定渗流模型(包括:无限大边界气藏、圆形封闭边界气藏、圆形定压边界气藏),通过Laplace 变换,得到了模型的 Laplace 空间解析解,利用 Stehfest 数值反演得到实空间的解。根据实空间中无因次产量与无因次时间的变化关系曲线,分析了储容比、窜流系数、无因次应力敏感系数、表皮系数对气井流量动态特征的影响。研究结果对科学合理开发双重变形介质气藏、保证气井和气藏正常生产等都具有重要的理论和现实意义。

关键词: 双重变形介质, 应力敏感, 流量, 动态特征, 数学模型

Abstract: In the process of developing the deformed double porosity media reservoirs, the rock stress-sensitivity will apparently effect the performance of development. In this paper, the deformed double porosity mathematic
model is established and the permeability stress-sensitivity is presented on the basis of considering double porosity media and deformable performance of rock. Through Laplace transformation, the Laplace space analytic solution
has been obtained and converted into real space solution by means of the numerical inversion of Stehfest and the solution of the mathematic model is obtained. On the basis of the varying relation between the dimensionless rate and dimensionless time, the influence of the storativity ratio, the interporosity flow parameter, the dimensionless stresssensitivity and skin coefficient on gas well flux dynamic characteristics has been analyzed. The research result is
of actual significance to develop deformed double porosity media reservoirs reasonably and to ensure the normal production of the gas wells or reservoir.

Key words: deformed double porosity media, stress-sensitivity, flowing, dynamic Characteristics, mathematic model

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