Three-axis permeability testing method
A test method and permeability technology, applied in the field of test and triaxial permeability test, can solve the problems of low permeability, low test efficiency, low utilization rate of coalbed methane and shale gas development, etc., to ensure system safety and simplify effect of connection
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[0027] The present invention will be further described below in conjunction with accompanying drawing.
[0028] Such as figure 1 Shown is the structural representation of the test device used in the present invention, test device comprises: model system 1, gas control system 2, temperature control system 3, three-axis loading system 4, vacuum pumping system 5, gas sample collection system 6 and electric Control and monitoring systems;
[0029] The model system 1 includes a core holder 1.1, an upstream reference cylinder 1.21, a downstream reference cylinder 1.22, a strain tester 1.5 and a plurality of valves for controlling gas circulation, and the entrance (lower end) of the sample chamber of the core holder 1.1 ) is communicated with the upstream reference cylinder 1.21 inlet, and the outlet is communicated with the downstream reference cylinder 1.22 inlet; the outlet of the upstream reference cylinder 1.21 is communicated with the outlet of the downstream reference cylinde...
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