A test device and test method for measuring liquid permeability of high-permeability rock
A liquid permeability and testing device technology, which is applied in the field of testing devices for high permeability rock liquid permeability, can solve the problems of lack of efficient testing methods for high permeability rock liquid permeability, etc. Scope widening effect
Inactive Publication Date: 2020-05-22
CHINA UNIV OF MINING & TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a test device for measuring the liquid permeability of high-permeability rocks, which solves the technical problem that the testing instruments in the prior art lack efficient testing means for the liquid permeability of high-permeability rocks
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[0027] A specific embodiment will be described in detail below in conjunction with the accompanying drawings.
[0028] Please refer to figure 1 and figure 2 The present invention provides a test device for measuring rock permeability, including a rock sample clamping and loading system, a gas control loading system, a liquid injection and drainage system, and a data acquisition and recording system. The rock sample clamping and loading system includes a core clamping device 18, the rock sample to be tested is placed in the core holder 18, the surrounding pressure of the rock to be tested is loaded through the rock sample clamping and loading system, and the two ends of the rock sample to be tested are loaded with pore pressure and pressure through the gas control loading system. Osmotic pressure difference. In the test with liquid as the penetrating medium, the liquid injection and drainage system can inject liquid into the rock core holder 18 and some devices in the gas co...
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The invention relates to a test device and a test method for testing the permeability of high-permeable rock liquid. The test device comprises a rock sample clamping and loading system, a gas controlling and loading system, a liquid injecting and discharging system and a data acquisition recording system, wherein the rock sample clamping and loading system comprises a rock core gripper and a confining pressure control subsystem, and a rock sample to be tested is put in the rock core gripper; the gas controlling and loading system can be communicated with the rock core gripper, and two end surfaces of the rock sample to be tested load pore pressure and a permeable pressure difference through the gas controlling and loading system; the liquid injecting and discharging system can be communicated with the gas controlling and loading system; the data acquisition recording system comprises at least one pressure transmitter, a pressure difference transmitter and a computer arranged in the test device, and the computer is respectively connected with the data control ends of the pressure transmitter and the pressure difference transmitter. According to the test device, gas and liquid can be adopted as permeability media for testing, and the technical problem in the prior art that a pulse decay method can not be used for testing the permeability of the high-permeable rock liquid is solved.
Description
technical field [0001] The invention relates to a test of rock permeability, in particular to a test device and a test method for the liquid permeability of high-permeability rock. Background technique [0002] At present, with the advancement of science and technology and social development, the seepage and migration laws of rock have a major impact on the development of underground resources and the construction of geotechnical engineering, so it is necessary to measure the permeability of rock. At present, the steady-state method is mostly used to measure the liquid permeability of high-permeability rocks, which has high requirements on the flowmeter and has a small range and poor accuracy, which is not conducive to the development of experimental tests. For liquid permeable media, especially the measurement of the permeability of high-permeability rocks, there is still a lack of efficient testing methods. Contents of the invention [0003] The object of the present in...
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IPC IPC(8): G01N15/08
CPCG01N15/0806G01N15/0826
Inventor 刘卫群桑盛刘青宏陈俊国马天然査浩章统
Owner CHINA UNIV OF MINING & TECH