Supercritical carbon dioxide fracturing and permeability testing integrated experimental device and method

A carbon dioxide, experimental device technology, applied in the measurement device, permeability/surface area analysis, and the use of stable tension/pressure to test the strength of materials, etc. Real measurement results and convenient operation

Active Publication Date: 2021-11-05
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing directional fracturing technology mainly adopts hydraulic fracturing technology, and the mechanism and effect of supercritical carbon dioxide directional fracturing technology on shale reservoirs are still unclear; on the

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  • Supercritical carbon dioxide fracturing and permeability testing integrated experimental device and method
  • Supercritical carbon dioxide fracturing and permeability testing integrated experimental device and method
  • Supercritical carbon dioxide fracturing and permeability testing integrated experimental device and method

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0033]Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wit...

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Abstract

The invention belongs to the technical field of unconventional natural gas development experiments, and discloses a supercritical carbon dioxide fracturing and permeability testing integrated experimental device. The device comprises a gas source system, an in-situ environment simulation system and a pulse testing system; the in-situ environment simulation system is used for providing an experimental environment for simulating the real formation temperature and stress state for a rock core test piece; the gas source system is used for providing a test gas source for the in-situ environment simulation system and providing a gas source for the fractured rock core test piece; the pulse testing system is used for carrying out pulse test on the rock core test piece to obtain the permeability. With the device and method adopted, a supercritical carbon dioxide directional fracturing shale experiment under a simulated formation condition can be realized, the (axial and radial) permeability of a rock core before and after fracturing can be tested in situ. The device and method have the advantages of intelligence, convenience in operation and the like compared with a traditional experiment method and experiment equipment. The in-situ environment simulation system simulates the field working condition more vividly, so that a measurement result is more real and accurate.

Description

technical field [0001] The invention belongs to the technical field of unconventional natural gas development experiments, and in particular relates to an experimental device and method integrating supercritical carbon dioxide fracturing and permeability testing. Background technique [0002] Shale gas has great development prospects in my country. However, conventional hydraulic fracturing is not ideal for the exploitation of many shale gas reservoirs. Supercritical CO 2 Fracturing technology can overcome many shortcomings of conventional hydraulic fracturing, and has a good application prospect. Further, through shale drilling radial prefabricated fracture directional fracturing technology can control fracture initiation and expansion in a predetermined direction to achieve The anti-reflection effect of specific regions of the reservoir. However, the existing directional fracturing technology mainly adopts hydraulic fracturing technology, and the mechanism and effect of s...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01N3/12
CPCG01N15/0826G01N3/12G01N2203/0019G01N2203/0044
Inventor 朱万成刘书源张秀凤魏晨慧
Owner NORTHEASTERN UNIV
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