Cable sealing device for wellhead of coalbed methane extraction well

A cable sealing and cable sealing technology, which is used in sealing/isolation, wellbore/well components, earth-moving drilling, etc., can solve problems such as difficulty in effective sealing and leakage of cables, and achieve good sealing effect and prevent leakage. Effect

Inactive Publication Date: 2016-09-28
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the technical problem in the prior art that it is difficult to effectively seal when the cable passes through the wellhead of the coalbed methane extracti

Method used

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  • Cable sealing device for wellhead of coalbed methane extraction well
  • Cable sealing device for wellhead of coalbed methane extraction well

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Experimental program
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Embodiment 1

[0027] see figure 1 and figure 2 , this embodiment provides a wellhead cable sealing device for coalbed methane extraction wells, the device includes a sealing body 1 , a cable sealer 3 and a sealing plug 6 . One input port 7 , three output ports 4 and two connection ports 5 are opened on the sealing body 1 . The input port 7 communicates with the output port 4 , and each output port 4 is connected with a cable sealer 3 . Three cables 2 enter the inside of the sealing body 1 from the input port 7, and are led out through the cable sealer 3. The diameter of the cables 2 is 8mm, and the outside of the cables 2 is provided with a protective layer. Each connection port 5 is connected with a sealing plug 6 , and the connection port 5 communicates with the input port 7 .

[0028] see figure 1 and figure 2 , the cable sealer 3 includes a first gland 31, a central piece 35, and a second gland 39 arranged in sequence from one end to the other, as well as a sealing sleeve 33, a f...

Embodiment 2

[0030] see figure 1 and figure 2, this embodiment provides a wellhead cable sealing device for coalbed methane extraction wells, the device includes a sealing body 1 , a cable sealer 3 and a sealing plug 6 . The sealing body 1 is provided with an input port 7 , two output ports 4 and two connection ports 5 . The input port 7 communicates with the output port 4 , and each output port 4 is connected with a cable sealer 3 . Two cables 2 enter the inside of the sealing body 1 from the input port 7, and are led out through the cable sealers 3 in the two output ports 4 respectively. The diameter of the cables 2 is 8mm, and the outside of the cables 2 is provided with a protective layer. Remove the sealing plug 6 provided in the connection port 5, connect a cable sealer 3 in each connection port 5, the connection port 5 communicates with the input port 7, and two sensor wires enter the inside of the sealing body 1 from the input port 7, respectively Lead out via cable seals 3 in ...

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Abstract

The invention relates to the technical field of natural gas extraction, in particular to a cable sealing device for a wellhead of a coalbed methane extraction well. The device comprises a sealing body and cable sealers. The sealing body is provided with input ports and output ports. The input ports communicate with the output ports. The interior of each output port is connected with one cable sealer. Cables enter the sealing body through the input ports and are guided out through the cable sealers. The cable sealing device for the wellhead of the coalbed methane extraction well effectively seal the cables passing through the wellhead of the coalbed methane extraction well, and leakage caused by gaps between the wellhead of the extraction well and the cables is prevented.

Description

technical field [0001] The invention relates to the technical field of natural gas exploitation, in particular to a wellhead cable sealing device for coalbed methane extraction wells. Background technique [0002] The main component of coalbed methane is methane, which is mainly adsorbed on the surface of coal matrix particles, and part of the hydrocarbon gas is free in coal pores or dissolved in coalbed water. It is an associated mineral resource of coal and belongs to unconventional natural gas. Coalbed methane is near Clean, high-quality energy and chemical raw materials that have risen internationally in the past ten or twenty years. Coalbed methane is one of the three major members of the gas energy family, and its main component is methane, which is an associated gas that mainly exists in coal mines. In the process of coalbed methane extraction, the detection of working condition parameters at the bottom of the well is an important part of data analysis. The collectio...

Claims

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Application Information

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IPC IPC(8): E21B33/03
CPCE21B33/03
Inventor 吴川韩磊杨文剑张峰
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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