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Secondary hole sealing and pressure measuring device based on expanding agents

A technology of secondary sealing and pressure measuring device, which is applied in the directions of measurement, sealing/isolation, wellbore/well components, etc., and can solve problems such as poor secondary sealing effect

Active Publication Date: 2017-05-10
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing capsule-type hole sealing and pressure measurement devices are disposable devices and the secondary sealing effect is not good

Method used

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  • Secondary hole sealing and pressure measuring device based on expanding agents
  • Secondary hole sealing and pressure measuring device based on expanding agents
  • Secondary hole sealing and pressure measuring device based on expanding agents

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Embodiment Construction

[0016] The present invention is described in detail below in conjunction with accompanying drawing and embodiment:

[0017] A kind of secondary sealing pressure measurement device based on expansion agent, refer to the attached Figure 1-3 , consisting of air intake flower tube 1, independent conduit 2, pressure gauge 3, high-pressure independent water bag 4, water injection conduit 5, water injection pump 6, high-pressure independent expansion bag 7, water injection pipe 8, expansion agent filling pipe 9, limit chain 10 , Limiting plate 11, grouting pump 12, grouting conduit 13, grouting cavity 14 components.

[0018] Secondary sealing and pressure measurement device based on expansion agent Sealing and pressure measurement: including the following steps: (1) The air intake flower pipe 1 is connected to the independent conduit 2, both pipes are steel conduits, and a pressure gauge is installed behind the independent conduit 2 3. The high-pressure independent water bag 4 sui...

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Abstract

A secondary hole sealing and pressure measuring device based on expanding agents adopts a high-pressure independent water bag for water injection and pressure bearing during hole sealing. Water drainage pressure relief can be conducted when equipment is dismounted, and the equipment can be recycled. Turnover parts at the two ends of a high-pressure independent expansion bag are matched with limiting chains and limiting boards for two-end hole sealing, one-time two-end hole sealing fixation of an independent annular grouting cavity is formed, after slurry is grouted for primary hole sealing, water is injected into the high-pressure independent expansion bag, the expanding agents come across water to expand, the two-end hole sealing effect of the device is further improved, the high-pressure independent expansion bag deforms vertically axially, stress for slurry secondary hole sealing is provided, the slurry is pressed into cracks in surrounding rocks, and secondary hole sealing is finished.

Description

[0001] Technical field: [0002] The invention relates to a secondary hole sealing and pressure measuring device based on an expansion agent, in particular to a hole sealing and pressure measuring device for secondary sealing of boreholes through expansion and pressure application [0003] Background technique: [0004] At present, coal and gas outbursts are an important factor threatening the safe production of mines. Gas pressure measurement has been widely used as an important method to judge the outburst of coal mines. However, most of the existing capsule-type hole-sealing and pressure-measuring devices are disposable devices and the secondary sealing effect is not good. In order to reduce the cost and improve the accuracy of the measurement data, it is urgent to design a sealing and pressure measuring device that can be reused, has a good sealing effect and is easy to operate. [0005] Invention content: [0006] Under the condition of overcoming the problems of the te...

Claims

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Application Information

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IPC IPC(8): E21B33/12E21B33/13E21B47/06
CPCE21B33/1208E21B33/13E21B47/06
Inventor 张嘉勇巩学敏周凤增王凯郑庆学吕志强周宝生孙胜崔啸
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY