Device and method for testing fracture dynamic conductivity and bedrock gas supply capacity
A technology of conductivity and testing equipment, which is applied in the direction of measuring equipment, suspension and porous material analysis, instruments, etc., and can solve problems such as blind spots in shale gas development
Active Publication Date: 2022-04-15
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 test device and method for the dynamic conductivity of cracks and the gas supply capacity of bedrock. The test device includes a core holder, a gas supply device, a liquid supply device, a back pressure device, and a flow detection device; The output ends of the gas supply device and the liquid supply device are connected to the core holder, and the output ends of the core holder are connected to the back pressure device and the flow detection device; Plugs are set up, down, left, and right of the core holder, rubber layers are set on the front and rear inner surfaces, and impermeable partitions are set on the upper and lower end faces of the square core in the core holder, so that the present invention can be used to measure the conductivity of fractures at the same time and stress sensitivity. In addition, by setting permeable partitions on the upper and lower ends of the square core in the core holder, the present invention can also be used to measure the gas supply capacity of the bedrock, and to measure the impact of fracture conductivity on production capacity in the shale gas development process. The impact studies of the evaluation provide experimental support.
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