新疆石油地质

新疆石油地质 ›› 2003, Vol. 24 ›› Issue (4): 351-352.

• 讨论与争鸣 • 上一篇    下一篇

油气藏岩石的应力和应变状态研究

李传亮1, 杜文博2   

  1. 1.西南石油学院石油工程系,四川 南充 637001;
    2.中国石油 玉门油田分公司 勘探开发研究院,甘肃 玉门 735200
  • 收稿日期:2002-08-02 发布日期:2021-01-13
  • 作者简介:李传亮(1962-), 男,山东嘉祥人,博士,教授,油藏工程。联系电话:0817-2643291

Study of Stress and Strain State in Reservoir Rocks

LI Chuan-liang1, DU Wen-bo2   

  1. 1. Department of Petroleum Engineering, Southwest Petroleum Institute, Nanchong, Sichuan 637001, China;
    2. Research Institute of Exploration and Development, Yumen Oilfield Company, PetroChina, Yumen, Gansu 735200, China
  • Received:2002-08-02 Published:2021-01-13

PDF

171

摘要： 岩石沉积过程中的应变状态为一维应变,而应力状态为三维应力;岩石在油气开采过程中的应变状态为三维应变,应力状态亦为三维应力;实验室测定的岩石压缩系数为三维应变状态下的数值,不需转换就可以直接应用于油藏工程研究;把压缩系数从三维应变状态向一维应变状态进行转换的传统作法是不妥当的,这使得油气藏岩石的弹性能量严重被低估。

关键词: 岩石, 油藏, 应力, 应变, 压缩系数

Abstract: The strain state is assumed to be one dimension strain, while the stress state appears 3D one in process of rock sedimentation. However, during oil-gas production in reservoir rocks, it is shown that both the strain state and the stress one are of 3D features. Therefore, the rock compressibility coefficients measured in core labs represent the values under the 3D strain state, and can be directly applied to study of related reservoir engineering without necessary to be converted. It is invalid for traditional practice to convert rock compressibility coeffi-cient from 3-D strain state to a dimensional one, which may allow the elastic energy in an oil-gas reservoir rock to be underestimated badly.

Key words: rock, reservoir, stress, strain, compressibility coefficient

中图分类号: