Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock
A technology of diversion capacity and gas supply capacity, applied in measuring devices, suspension and porous material analysis, instruments, etc., can solve problems such as blind spots in shale gas development
Active Publication Date: 2021-06-25
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
At this stage, the research on testing devices and testing methods for bedrock gas supply capacity is still lacking, resulting in a certain blind spot in the understanding of shale gas development
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[0052] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0053] It should be noted that, in the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other.
[0054] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.
[0055] In the present invention, the terms "first", "second" and the like are used to distinguish similar objects, rather than to describe a specific order or sequence, unless stated otherwise. The terms used should be understood as such; use of the terms "upper", "lower", "left", "right", etc. generally refers to the orientation shown in the drawings, or to the parts themselves in vertical, perpendicular or In terms of the direction of...
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The invention discloses a device and a method for testing the dynamic flow conductivity of a crack and the gas supply capacity of bedrock. The testing device comprises a rock core holder, a gas supply device, a liquid supply device, a pressure return device and a flow detection device, wherein the output end of the gas supply device and the output end of the liquid supply device are both connected with the rock core holder, and the output end of the rock core holder is connected with the pressure return device and the flow detection device. According to the invention, plugs are arranged on the upper, lower, left and right sides of the rock core holder, rubber layers are arranged on the front and rear inner surfaces, and impermeable partition plates are arranged on the upper and lower end faces of the square rock core in the rock core holder, so that the device can be used for simultaneously measuring the fracture conductivity and stress sensitivity; and permeation partition plates are arranged on the upper end face and the lower end face of the square rock core in the rock core holder, so that the device can be used for measuring the gas supply capacity of bedrock, and experimental support is provided for research on the influence of fracture conductivity on productivity evaluation in the shale gas development process.
Description
technical field [0001] The invention relates to the technical field of oil and gas development, in particular to a test device and method for the dynamic conductivity of fractures and the gas supply capacity of bedrock. Background technique [0002] The content of shale gas is mainly represented by CH 4 Mainly, it is an extremely ideal natural gas. The exploitation of shale gas has attracted widespread attention. The development process usually requires fracturing. The formation of fractures increases the power to promote the flow of shale gas from the matrix to the fractures. The shale gas first flows to the fractures and then to the wellbore to be produced. [0003] At present, it is generally believed that the productivity of shale gas wells mainly depends on the conductivity provided by proppant-packed fractures and self-propped fractures formed by reservoir shear slip. However, the inventors found in the process of research on factors affecting production capacity tha...
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IPC IPC(8): G01N15/08G01N7/00
CPCG01N15/0826G01N7/00
Inventor 陈世杰潘毅孙雷王亚娟卜淘林仁义赵秋霞
Owner SOUTHWEST PETROLEUM UNIV