新疆石油地质

新疆石油地质 ›› 2006, Vol. 27 ›› Issue (3): 348-350.

• 应用技术 • 上一篇    下一篇

渗透率的应力敏感性分析方法

李传亮   

  1. 西南石油学院 油气藏地质及开发工程国家重点实验室, 成都 610500
  • 收稿日期:2005-05-31 出版日期:2006-06-01 发布日期:2020-10-19
  • 作者简介:李传亮(1962-), 男, 山东嘉祥人, 教授, 博士, 油藏工程,(Tel) 0817-83033291(E-mail) cllipe@sina.com.

A Study on the Stress Sensibility of Permeability of Reservoir Rocks

LI Chuan-liang   

  1. State Key Laboratory of Oil-Gas Reservoir Geology and Development Engineering, Southwest Petroleum Institute, Chengdu, Sichuan 610500
  • Received:2005-05-31 Online:2006-06-01 Published:2020-10-19

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摘要： 因石油开采而导致的地层压力下降,将降低油藏岩石的渗透率,该性质称做岩石的应力敏感性。为了研究油藏岩石渗透率参数的应力敏感程度,采用Terzaghi有效应力和本体有效应力两种方法进行了分析。研究结果表明,本体有效应力是影响岩石渗透率的根本原因,采用Terzaghi有效应力过高估计了岩石因地层压力下降而导致的渗透率损失,建议今后采用本体有效应力研究油藏岩石的应力敏感性质。

关键词: 油藏, 渗透率, 应力

Abstract: Permeability of reservoir rocks changes with stress applying on the rocks. The change of permeability is due to the change of primary effective stress of rocks, not the Terzaghi's effective stress. Study on the permeability sensitivity should adopt the primary effective stress instead of the conventional Terzaghi's effective stress. Adoption of Terzaghi's effective stress usually overestimates the loss of reservoir permeability due to the drawdown of reservoir pressure.

Key words: reservoir, permeability, stress, sensitivity

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