Device and method for testing tri-axial strength of rock under supercritical carbon dioxide condition

A carbon dioxide and supercritical technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems that supercritical carbon dioxide cannot be injected, the triaxial strength of rocks can be measured, and carbon dioxide cannot reach the supercritical state. Small error, high work efficiency, easy to obtain the effect

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 defects in the existing rock mechanics experiment method technology, such as carbon dioxide cannot reach the supercritical state, supercritical carbon dioxide cannot be injected into the rock core, and rock triaxial strength cannot be measured under supercritical

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  • Device and method for testing tri-axial strength of rock under supercritical carbon dioxide condition
  • Device and method for testing tri-axial strength of rock under supercritical carbon dioxide condition
  • Device and method for testing tri-axial strength of rock under supercritical carbon dioxide condition

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Embodiment Construction

[0027] 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:

[0028] Such as figure 1 and figure 2 As shown, a device for measuring the triaxial strength of rock under the condition of supercritical carbon dioxide, which includes a triaxial test chamber 1, a core holding device, a gas supply system, a hydraulic oil confining pressure loading system 2, and is equipped with a controller and experimental data The computer 3 of the collector, 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 4a of the axial pressure loading test bench and the lower compression rod 4b of the axial compression loading test bench , the upper compression rod 4a of the axial pressure loading test bench is fixed on the triaxial test chamber 1, the lower compression rod...

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Abstract

The invention discloses a device for testing tri-axial strength of a rock under a supercritical carbon dioxide condition. The device comprises a tri-axial test cabin (1), a rock core clamping device, a gas supply system, a hydraulic oil confining pressure loading system (2) and a computer, wherein a controller and an experiment data acquisition device are arranged in the computer; a heating ring (2) and an oil inlet valve (6) and an oil return valve (7) communicated with the tri-axial test cabin (1) are arranged on the outer wall of the tri-axial test cabin (1); the rock core clamping device consists of a rock core clamping device (10), an air cushion (11), an insulating self-sticking sealing belt (12) and a thermal shrinkable sleeve (13); the gas supply system consists of a carbon dioxide gas bottle (14), a gas supercharger (15) and an air compressor (16) which are sequentially connected. The invention also provides a testing method. The device and the method have the beneficial effects that tri-axial strength measurement of the rock under the supercritical carbon dioxide condition is realized well; the device is convenient and feasible to refit, small in measurement errors, high in working efficiency and high in carbon dioxide utilization rate.

Description

technical field [0001] The invention relates to the technical field of measuring the triaxial strength of rock under the condition of supercritical carbon dioxide, in particular to a device and method for measuring the triaxial strength of rock under the condition of supercritical carbon dioxide. 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 supercritical carbon dioxide to develop unconventional oil and gas resources has also attracted widespread attention from all walks of life. A comprehensive understanding and mastery of the mechanical parameters of formation rocks under supercritical carbon dioxide conditions will provide an important basis for formulating oil and gas field development plans and guiding on-site...

Claims

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Application Information

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IPC IPC(8): G01N3/10
Inventor 朱海燕陶雷刘清友
Owner SOUTHWEST PETROLEUM UNIV
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