Device and method for measuring permeability and elasticity modulus of anisotropic rocks
An anisotropic and elastic modulus technology, applied in the field of rock mechanics experimental devices, can solve the problem that the rock permeability and stress-strain cannot be obtained, the rock anisotropy cannot be well reflected, and the anisotropic rock permeability cannot be obtained. and elastic modulus data, etc., to achieve the effect of reliable measurement method, reasonable structure and simple operation
Active Publication Date: 2017-05-31
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
[0003] At present, the measurement of rock permeability and elastic modulus is mainly aimed at homogeneous rocks, which cannot better reflect the anisotropy of rocks. For example, the invention patent with application number 201310745508.X and the invention patent with application number 201110368838.2 can only be obtained The permeability of the rock, but the simultaneous data of the rock permeability and stress-strain in the triaxial compression process cannot be obtained; the invention patent with application number 201310733764.7 can only obtain the permeability and stress-strain data of unsaturated soil, but cannot obtain the data of each Permeability and elastic modulus data of anisotropic rock in different directions
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[0036] Such as figure 1 As shown, a kind of measuring device of anisotropic rock permeability and elastic modulus of the present invention comprises: triaxial autoclave 1, base 16, piston rod 9, rubber sleeve 14, strain gauge 15, electromagnetic heating ring 3, Permeability measuring instrument 18, gas cylinder 20.
[0037]The piston rod 9 is installed on the upper end of the triaxial stress kettle 1 and sealed with the sealing ring II8, which can be used to apply pressure to the rock core 13; the base 16 is installed on the lower end of the triaxial stress kettle 1, sealed with the sealing ring I7, and passed through the screw The hole 23 is fixed; the rock core 13 is placed in the rubber sleeve 14, and placed together between the piston rod 9 and the base 14, sealed with a thermoplastic tube 4; the liquid hole 6 is placed in the lower part of the side wall of the triaxial pressure vessel 1 , for injecting and discharging liquid to the interior of the kettle cavity 2, so as ...
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The invention provides a device and method for measuring the permeability and the elasticity modulus of anisotropic rocks. The device comprises a triaxial pressure kettle for providing different pressure, rubber sleeves for arranging cube rock cores at different azimuths, a strain gauge for measuring strains of the rock cores at different azimuths, an electromagnetic heating coil for providing different temperatures, and a gas channel and an air groove for facilitating gas transportation. The measuring device is reasonable in structure and simple in operation; the permeability and the elasticity modulus of the anisotropic rocks under the conditions of different triaxial stress and temperatures, and the permeability and the elasticity modulus of the same anisotropic rock in three directions can be measured; the anisotropy of the rocks can be better reflected; and the data measurement reasonability and accuracy of the permeability and the elasticity modulus of the anisotropic rocks are improved.
Description
technical field [0001] The invention relates to a rock mechanics experiment device and method, in particular to a measuring device and method for anisotropic rock permeability and elastic modulus. Background technique [0002] With the development and utilization of unconventional oil and gas resources, the exploitation of shale gas and coalbed methane has attracted much attention. However, due to the influence of the depositional environment, shale and coal rocks have obvious sedimentary bedding, compared with homogeneous rocks, their permeability and elastic modulus show obvious anisotropy, making shale and coal rock reservoirs The fracturing construction and effect evaluation of layers are more complex. Therefore, it is of great engineering significance to accurately measure the permeability and elastic modulus of anisotropic rocks. [0003] At present, the measurement of rock permeability and elastic modulus is mainly for homogeneous rocks, which cannot reflect the ani...
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IPC IPC(8): G01N15/08G01N3/12
CPCG01N3/02G01N3/12G01N3/18G01N15/0826G01N2203/0048G01N2203/0075
Inventor 闫传梁王怀栋程远方韩忠英丁吉平滕飞李庆超
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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