Method and device for recovering oil and gas reservoir rock mechanics underground in-situ model

A technology of rock mechanics and in-situ modeling, which is applied to the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, and the application of stable tension/pressure to test the strength of materials, etc., which can solve the problem that the validity and accuracy of rock mass mechanical parameters in oil and gas reservoirs cannot be guaranteed. sexual issues

Inactive Publication Date: 2013-08-21
PEKING UNIV
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Problems solved by technology

[0003] For oil and gas reservoir rock mass with complex confining pressure, high temperature, high pore pressure, and multiphase fluids at depths of thousands of meters underground, the traditional static mechanical properties research is to drill cores under surface conditions and use triaxial stress A tester or an acoustic wave tester is used to conduct mechanical experiments on the cores taken out, such as taking the drilled cores to the ground laboratory at room temperature, normal pressure, and dry samples, or considering applying different confining pressures, or

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  • Method and device for recovering oil and gas reservoir rock mechanics underground in-situ model
  • Method and device for recovering oil and gas reservoir rock mechanics underground in-situ model
  • Method and device for recovering oil and gas reservoir rock mechanics underground in-situ model

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[0126] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0127] One of the core ideas of the present invention is to take the rock elastic mechanical parameters commonly used in oil and gas reservoir engineering as the research object, under the condition of restoring the prototype of the oil and gas reservoir, from the rock mass mechanical parameters and confining pressure, pore pressure, temperature and pore Based on the functional relationship of the fluid, the difference between the dynamic and static test results of rock mechanical parameters and their influencing factors, the influence of rock structure, structure, composition and pore and fracture structure on rock mechanical parameters is studied; the rock mechanical elasticity of oil and gas reservoirs The relationship between t...

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Abstract

The invention provides a method and a device for recovering an oil and gas reservoir rock mechanics underground in-situ model. The method comprises the following steps of: measuring rock mechanics parameters of an oil and gas reservoir; counting rock mechanics property influence parameters of the oil and gas reservoir; calculating the anisotropy strength of the rock mechanics parameters; obtaining a correlation between the rock mechanics parameters and the rock mechanics property influence parameters of the oil and gas reservoir; obtaining a correlation between the rock mechanics property influence parameters and the anisotropy strength; and recovering the oil and gas reservoir rock mechanics underground in-situ model by adopting the rock mechanics parameters, the anisotropy strength of the rock mechanics parameters, the correlation between the rock mechanics parameters and the rock mechanics property influence parameters of the oil and gas reservoir and the correlation of the rock mechanics property influence parameters and the anisotropy strength. By the method, the effectiveness and the accuracy for recovering the oil and gas reservoir rock mechanics underground in-situ model can be improved.

Description

technical field [0001] The invention relates to the technical field of oil and gas reservoir development, in particular to a method for restoring an underground in-situ model of rock mass mechanics in an oil and gas reservoir, and a device for restoring an in-situ underground model of rock mass mechanics in an oil and gas reservoir. Background technique [0002] Oil and gas reservoir rock mass is a geological entity composed of a series of structural planes and structural bodies at a certain depth, at a certain temperature and pressure, and saturated with a certain amount of fluid by the porous medium material of the reservoir rock mass and its upper and lower surrounding rocks. Compared with near-surface engineering geology, it is generally buried deeper (the formation depth is generally several thousand meters), and it is under higher triaxial complex confining pressure (up to 200MPa), higher temperature (up to 200°C) and higher High pore pressure (up to 200Mpa) and multip...

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Application Information

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IPC IPC(8): G01N3/18G01N29/07
Inventor 师永民张玉广王磊吴文娟柴智秦小双师锋李晓敏郭馨蔚吴洛菲熊文涛徐蕾师春爱方媛媛师翔
Owner PEKING UNIV
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