Liquid fill adapter for gas well

A natural gas and liquid technology, which is applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc. It can solve the problems of low efficiency of filling liquid, disturbing the stable production of gas wells, and fluctuations in gas production, so as to prevent wellhead piracy Air phenomenon, ingenious structural design, and the effect of saving manpower and material resources

Inactive Publication Date: 2008-02-27
许现西
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Problems solved by technology

[0002] In the late stage of natural gas field development, the number of low-yield wells and salt-bound wells is increasing, and the maintenance workload of daily liquid injection is also increasing. Using the existing technology for liquid injection requires frequent cutting and welding of wellheads, which not only wastes a lot of manpower and material resources , damage the gas tree, and the work efficiency of liquid injection is low; at the same time, the wellhead of the gas well is in the field during natural gas production, and the phenomenon of stealing gas bags often occurs, resulting in gas production fluctuations, wellbore fluid accumulation, and casing corrosion. , which seriously interferes with the stable production of the gas well, and the degree of harm becomes more serious as the pressure of the gas well decreases

Method used

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  • Liquid fill adapter for gas well

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Embodiment Construction

[0017] The technical solution of the present invention will be described in further detail below with reference to the drawings and specific embodiments.

[0018] As shown in Figure 1, a natural gas well liquid filling joint includes a joint body 1, a hollow cavity is arranged inside the joint body 1, and the hollow cavity opens at the lower end of the joint body 1; the joint body The outside of the lower end is provided with threads to cooperate with the flange threads of the natural gas well;

[0019] The upper part of the joint body 1 is radially provided with a large displacement interface 10 and a small displacement interface 11, and the large displacement interface 10 and the small displacement interface 11 communicate with the hollow cavity respectively;

[0020] A movable valve 5 is arranged in the hollow cavity, and an inverted conical sealing inner surface is arranged in the middle of the hollow cavity, and the movable valve 5 has a sealed inverted conical pedestal m...

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Abstract

The present invention provides one kind of natural gas well liquid filling joint, which includes one joint body with hollow cavity possessing opening in the lower end, one great displacement interface and one small displacement interface communicated to the hollow cavity set radially onto the joint body, one movable valve inside the hollow cavity and with truncated cone surface for fitting the inner surface of the hollow cavity hermetically, one valve cover with valve core leading hole and through hole fixed to the lower end of the joint body, and one valve core in the bottom of the movable valve. The joint is for filling liquid to natural gas well, and has features of smart structure, use convenience and high safety.

Description

technical field [0001] The invention relates to a liquid filling joint, in particular to a natural gas well liquid filling joint for liquid filling of a natural gas well. Background technique [0002] In the late stage of natural gas field development, the number of low-yield wells and salt-bound wells is increasing, and the maintenance workload of daily liquid injection is also increasing. Using the existing technology for liquid injection requires frequent cutting and welding of wellheads, which not only wastes a lot of manpower and material resources , damage the gas tree, and the work efficiency of liquid injection is low; at the same time, the wellhead of the gas well is in the field during natural gas production, and the phenomenon of stealing gas bags often occurs, resulting in gas production fluctuations, wellbore fluid accumulation, and casing corrosion. , which seriously interferes with the stable production of the gas well, and the degree of harm becomes more seri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03E21B43/16
Inventor 许振西许现西张海军刘国超侯淑华
Owner 许现西
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