Device and method for measuring permeability of rock in fracturing process

A technology of permeability and rock, which is applied in the direction of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problem of difficult measurement of permeability, and achieve the effect of high experimental efficiency and simple experimental process

Active Publication Date: 2015-05-06
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the permeability of existing rocks is difficult to measure in the process of three-dimensional stress loading to fracture, and to provide a measurement

Method used

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  • Device and method for measuring permeability of rock in fracturing process
  • Device and method for measuring permeability of rock in fracturing process
  • Device and method for measuring permeability of rock in fracturing process

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

[0029] Such as Figure 1-3 As shown, a device for measuring permeability in the process of rock fracture, which includes a triaxial test chamber 1, a core holding device, a carbon dioxide gas cylinder 2, a flow monitoring device, a hydraulic oil confining pressure loading system 3 and a controller installed Computer 4, the upper and lower ends of the triaxial test cabin 1 and the upper and lower ends of the triaxial test cabin 1 are respectively provided with the upper compression rod 5a of the axial pressure loading test platform and the lower compression rod 5b of the axial compression loading test platform. The upper pressing bar 5a of the loading test bench is fixed on the triaxial test chamber 1, the lower pressing bar 5b of the axial loading test bench can move up and down to load the axial pre...

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Abstract

The invention discloses a device for measuring the permeability of rock in a fracturing process. The device comprises a triaxial test chamber (1), a core gripping device, a carbon dioxide cylinder (2), a flow monitoring device, a hydraulic oil confining pressure loading system (3) and a computer (4), wherein the hydraulic oil confining pressure loading system (3) comprises an oil pump, a booster pump and an oil tank; the core gripping device comprises a core gripper (11), an air cushion (12), an insulating self-adhesive sealing tape (13) and a thermal shrinkable sleeve (14); an air inlet (15) connected with an air inlet valve (9) and an air outlet (16) connected with an air outlet valve (10) are formed in the upper end and the lower end of the core gripper (11) respectively; the carbon dioxide cylinder (2) is connected with the air inlet valve (9); and the flow monitoring device comprises a glass burette (17) and a rubber hose (18). The invention further discloses a measuring method. The device provided by the invention has the beneficial effects of convenience and easiness in refitting, safety and simplicity in operation, small measuring error, high working efficiency and high utilization ratio of carbon dioxide.

Description

technical field [0001] The invention relates to the technical field of petroleum development, in particular to a device and a method for measuring permeability in the process of rock fracture. Background technique [0002] With the continuous development of domestic oil and gas field development and the continuous expansion of overseas business, the technical requirements for the development of unconventional special oil and gas reservoirs at home and abroad are getting higher and higher. The use of hydraulic fracturing to develop unconventional oil and gas resources has long been widely concerned by all walks of life. A comprehensive understanding and grasp of the changes in mechanical parameters and rock permeability during the process of hydraulic fracturing when rocks are subjected to three-dimensional stress loads until they rupture provides an important basis for formulating oil and gas field development plans and guiding on-site construction. [0003] The formation en...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 朱海燕刘清友陶雷
Owner SOUTHWEST PETROLEUM UNIV
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