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Device and method for researching damage to fractured rock mass and expansion of crack based on catastrophe theory

A technology for fracture propagation and theoretical research, applied in the field of devices based on catastrophe theory to study fractured rock mass damage and fracture propagation, which can solve problems such as inability to accurately describe fracture propagation parameters of hydraulic fractured rock mass

Inactive Publication Date: 2014-04-09
NORTHEAST GASOLINEEUM UNIV
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device and method for studying fractured rock mass damage and crack propagation based on catastrophe theory, which is used to solve the problem that the existing hydraulic fractured rock mass crack propagation parameters cannot be accurately described

Method used

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  • Device and method for researching damage to fractured rock mass and expansion of crack based on catastrophe theory
  • Device and method for researching damage to fractured rock mass and expansion of crack based on catastrophe theory
  • Device and method for researching damage to fractured rock mass and expansion of crack based on catastrophe theory

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention will be further described:

[0030] Such as figure 1 As shown, this device based on catastrophe theory to study fracturing rock mass damage and crack propagation includes a fixed baffle 1, a longitudinal pressure gripper 5, a horizontal load hydraulic gripper 18, an induction detection system, a deformation detection system, an energy release In the receiving system, the fixed baffle 1 is rectangular, and the vertical pressure holder 5 and the horizontal load hydraulic holder 18 form a specimen cavity 23 together with the fixed baffle 1 from the vertical and horizontal directions respectively. The specimen is placed in the specimen chamber 23, the longitudinal pressure holder 5 is located in the longitudinal pressure hydraulic chamber 3 at the same time, the longitudinal pressure holder 5 is connected to the transmission device 4, and the horizontal load hydraulic holder 18 is simultaneously located i...

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Abstract

The invention relates to a device and a method for researching damage to a fractured rock mass and expansion of a crack based on a catastrophe theory. According to the device and the method for researching damage to the fractured rock mass and the expansion of the crack based on the catastrophe theory, a fixed baffle is right-angle-shaped; a longitudinal pressure clamp, a horizontal load hydraulic clamp and the fixed baffle jointly surround to form a test piece cavity; the longitudinal pressure clamp is positioned in a longitudinal pressure hydraulic cavity; the horizontal load hydraulic clamp is positioned in a horizontal load hydraulic cavity; a water injection pipe is connected with an injection pump through a pipeline; a fracturing shaft extends into the test piece cavity and is connected with a heating device and a fracturing liquid pressurization pump through pipelines; the fixed baffle is provided with a strain sensor and a sound emission signal receiver; the sound emission signal receiver is arranged on the horizontal load hydraulic clamp; a thermal induction detector of an induction detection system is arranged on the outer side of the perpendicular edge of the fixed baffle; a longitudinal load pressurization system is connected to the longitudinal pressure hydraulic cavity; a transverse load pressurization system is connected to the horizontal load hydraulic cavity. According to the device and the method which are disclosed by the invention, visible description of the expansion of the crack in the fractured rock mass is realized, and the expansion rule of the crack in the rock mass can be clearly described.

Description

[0001] 1. Technical field: [0002] The present invention relates to a research method for the calculation of rock mass fracturing crack expansion in petroleum and natural gas, unconventional oil and gas reservoirs, geotechnical engineering, etc., and specifically relates to a device and method for studying fracturing rock mass damage and crack expansion based on catastrophe theory . 2. Background technology: [0003] Hydraulic fracturing is currently the most widely used technical method in the technical fields of conventional and unconventional gas reservoir exploitation and stimulation measures such as oil and natural gas, shale gas and coalbed methane. At present, research on rock mass fracturing is mainly based on the macroscopic description of fractures in rock mass fracturing and conventional fracturing calculation models. Most of the research tends to unload the compressed rock mass to observe its fracture shape, and to analyze the expansion of internal fractures. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N1/28
Inventor 赵万春王婷婷付晓飞孙永河李玉伟袁伟伟
Owner NORTHEAST GASOLINEEUM UNIV
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