Shale seepage device integrating seepage and cutting, and seepage efficiency parameter determining method

Abstract

The application provides a shale seepage device integrating seepage and cutting, and a seepage efficiency parameter determining method. The shale seepage device comprises a movable sample bracket, a drying transition area, a sample cutting area, a self-seepage area and a controller, wherein the movable sample bracket is used for driving a target shale sample to move among the drying transition area, the sample cutting area and the self-seepage area; the movable sample bracket is provided with a weighing sensor to detect the mass of the target shale sample; the drying transition area is used for drying the target shale sample; the sample cutting area is used for performing laser scanning on the dried target shale sample, transmitting a scanning result to the controller, and performing lasercutting on the target shale sample under the control of the controller in order to form an artificial gap; the self-seepage area is used for performing a seepage experiment on the target shale sample; and the controller is used for controlling the movable sample bracket to move, and generating a laser cutting command according to the scanning result. Through adoption of the device, the shape of the artificial gap can be controlled accurately, and the influence of a complex artificial gap on the shale seepage capability can be researched.

Description

technical field [0001] The present application relates to the technical field of oil and gas field development, in particular to a shale imbibition device integrated with imbibition cutting and a method for determining imbibition efficiency parameters. Background technique [0002] Shale is characterized by low porosity and extremely low permeability. Unlike the exploitation of conventional oil and gas reservoirs, the physical properties of the reservoir must be modified in the process of exploitation of shale gas reservoirs. Spontaneous imbibition is an important mechanism affecting the production behavior of shale gas. In the process of spontaneous imbibition, fracturing fluid spontaneously enters into the shale reservoir matrix under the action of capillary force to replace the existing natural gas. Using hydraulic fracturing technology to artificially create a complex fracture network in the reservoir can effectively increase the contact area between the shale reservoir ...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a shale imbibition device integrated with imbibition cutting and a method for determining imbibition efficiency parameters to solve the problem that existing solutions cannot construct complex artificial fracture networks on small samples and evaluate its effect on spontaneous imbibition technical issues affecting

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