Core expansion type mechanical valve changing device under pressure

A technology of mechanical belt and valve device, which is applied in wellbore/well parts, earthwork drilling and production, etc., can solve the problems of polluting production layers and crushing oil layers, so as to avoid pollution and crushing, save costs and prevent pressure leakage Effect

Active Publication Date: 2016-07-06
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The present invention provides a core-expanding mechanical belt pressure replacement valve device, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of existing gate valve replacement devices. Problems of polluting production layers and crushing oil layers in the process of replacing gate valves

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  • Core expansion type mechanical valve changing device under pressure

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Embodiment Construction

[0016] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0017] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the figure 1 For example, the positional relationship of front, back, up, down, left, right, etc. is based on the attached figure 1 determined by the layout direction.

[0018] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0019] as attached Figures 1 to 3 As shown, the expansion core type mechanical belt pressure switch valve device includes a fixed frame 1, a push rod 2, a connecting plate 3, a pushing plate 4, a process flange 5 and a sealing flange, which are fixed between the fixed frame 1 and the connecting plate 3 There are no l...

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Abstract

The invention relates to the technical field of gate valve replacement devices, and is an expansion core type mechanical belt pressure replacement valve device, which includes a fixed frame, a push rod, a connecting plate, a pushing plate, a process flange and a sealing flange. There are no less than two double-headed screws fixed between them, no less than one hydraulic cylinder is fixed on the connection plate, there is a passage hole in the middle of the connection plate, and there is a piston rod in the hydraulic cylinder, the piston rod and the push plate fixed together, the right end of the push rod is fixed on the push plate, and the middle part of the push rod is located in the passing hole. The invention has a reasonable and compact structure and is easy to use. It can replace the gate valve under pressure. In the process of replacing the gate valve, it can ensure good sealing performance, prevent pressure leakage, and avoid damage to the oil layer when the gate valve is replaced by killing the well. Pollution and crushing, thereby avoiding the resurrection of the crushed oil layer, and avoiding the sewage discharge operation of the polluted oil layer, saving the cost of oil and gas exploitation 。

Description

technical field [0001] The invention relates to the technical field of gate valve replacement devices, and relates to a core-expanding mechanical belt pressure replacement valve device. Background technique [0002] As the exploitation of oil and gas fields gradually enters the mid-to-late stage of exploitation, during the exploitation process, the working environment of the Christmas tree and its valves deteriorates, they are constantly corroded by hydrogen sulfide, exposed to the sun and rain for a long time, and the valves are frequently switched on and off, resulting in damage, so the valve needs to be replaced frequently. However, in the process of pressurized production, when the valve of the Christmas tree is damaged, it is difficult to replace it. The existing method of replacing the valve is to press the well and then replace the valve. This will cause the medium and low pressure wells in the middle and late stage of exploitation to be crushed to death or pollute t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B23/00
Inventor 王海涛杨小平王树行但永军高亮
Owner BC P INC CHINA NAT PETROLEUM CORP
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