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Multi-field coupling coal bed methane extraction physical simulation testing system

A technology of physical simulation and test system, which is applied in the field of test systems for simulating the coalbed methane mining process under the multi-field coupling mechanism, can solve problems such as the inability to explain coalbed methane extraction, and achieve the effects of a high degree of automation and convenient equipment operation.

Active Publication Date: 2013-05-22
CHONGQING UNIV
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AI Technical Summary

Problems solved by technology

Although these seepage simulation tests have explained to a certain extent the influence of various influencing factors on the flow of coalbed methane, but in view of the complexity of the drainage work and its system, these simulation states are far from the actual situation on the spot, and cannot explain Coalbed methane extraction under actual conditions is affected by various factors

Method used

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  • Multi-field coupling coal bed methane extraction physical simulation testing system
  • Multi-field coupling coal bed methane extraction physical simulation testing system
  • Multi-field coupling coal bed methane extraction physical simulation testing system

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Embodiment Construction

[0084] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0085] Such as Figure 1 to Figure 6 As shown, a multi-field coupled coalbed methane mining physical simulation test system includes a test piece box 1, and the upper box plate of the test piece box 1 is sequentially provided with a first Z-direction pressure bar 2a and a second Z-direction pressure bar 2b, the third Z-direction pressure rod 2c and the fourth Z-direction pressure rod 2d, each Z-direction pressure rod is fixed with a Z-direction pressure plate 3, and four Y-direction pressure rods 4 and Y-direction pressure plates 5 are arranged on the right box plate, An X-direction pressing rod 6 and an X-direction pressing plate 7 are arranged on the rear case plate. The Z-direction pressing plate 3 , the Y-direction pressing plate 5 and the X-direction pressing plate 7 are all located in the specimen box 1 .

[0086] The bottom of the test piece box 1 is...

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Abstract

The invention discloses a multi-field coupling coal bed methane extraction physical simulation testing system. The system comprises a test piece box (1), wherein a step-shaped protruding mouth (9) is formed in a front box plate of the test piece box (1), a protruding sleeve (10) is fixedly connected with the inner side of the protruding mouth (9) through a bolt, an outer pipe fixing seat (11) is arranged inside the protruding sleeve (10), an outer pipe (12) is in threaded connection with an inner hole of the outer pipe fixing seat (11), an extraction outer region (12a) is arranged on the outer pipe (12), a plurality of extraction outer holes (14a) are formed in the extraction outer region (12a), and an inner pipe (15) is arranged on the outer pipe (12). According to the multi-field coupling coal bed methane extraction physical simulation testing system, coal bed methane extraction under the working condition at site can be simulated in a laboratory, changing of coal bed parameters in the actual working condition can be reproduced, and therefore changing of the stress field, the fracture field, the transfusion field and the temperature field can be studied, and spatial-temporal evolution and the distribution rule of coal bed gas migration and coal and rock mass fracture coupling can be analyzed.

Description

technical field [0001] The invention relates to a test system and method for simulating the mining process of coal bed methane under the multi-field coupling mechanism. Background technique [0002] Coal bed methane is a potential clean energy. In the current situation of energy tension, accelerating the development and utilization of coalbed methane has important practical significance for improving my country's energy structure, fully utilizing energy and reducing environmental pollution. From the perspective of mineral resources, coalbed methane is mainly composed of methane (content > 85%), formed in the process of coalification, stored in coalbed methane and its adjacent rock formations, and can be recovered by using development technology. Unconventional natural gas produced and utilized from coal seams. my country is rich in coalbed methane resources. According to the evaluation of coalbed methane resources, the geological resources of shallow coalbed methane bur...

Claims

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Application Information

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IPC IPC(8): E21F7/00
Inventor 许江尹光志刘东王维忠彭守建李波波蒋长宝程立朝梁永庆曹偈
Owner CHONGQING UNIV
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