Xinjiang Petroleum Geology ›› 2005, Vol. 26 ›› Issue (6): 732-734.

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The Principle of Rock Porosity Invariability in Primary Deformation

LI Chuan-liang   

  1. State Key Laboratory of Oil-Gas Reservoir Geology and Development Engineering, Southwest Petroleum Institute,Chengdu, Sichuan 610500, China
  • Received:2005-06-01 Online:2005-12-01 Published:2020-11-23

Abstract: There exist two typical deformations for rocks:primary deformation and structural one.Tight media mainly perform primary deformation in stress process with constant porosity, while loose rocks mainly perform structural deformation with porosity changing.Reservoir rocks are tight media, which deformation process obeys the principle of constant porosity in primary deformation.

Key words: rock, porosity, primary deformation

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