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Non-releasing gate valve replacement device

A gate valve, a technology to be replaced, applied in wellbore/well parts, earthwork drilling and production, etc., can solve problems such as environmental pollution, failure to repair the wellhead in time, and affect the production of oil and gas wells, so as to avoid environmental pollution, avoid production reduction, replace The effect of valve process safety and reliability

Active Publication Date: 2014-07-09
TOP WELL PETROLEUM TECH COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the gas tree is replaced as a whole in the conventional well killing operation method, the operation takes ten to fifteen days, which not only affects the production of oil and gas wells, but also cannot repair the wellhead in time, causing environmental pollution

Method used

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  • Non-releasing gate valve replacement device
  • Non-releasing gate valve replacement device
  • Non-releasing gate valve replacement device

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] Please refer to figure 1 , The embodiment of the present invention provides a device for replacing gate valves without losing hands, which includes a bracket, a feeding mechanism, a safety mechanism 22, a plug and a plug fixing device.

[0028] In this embodiment, the bracket includes a fixed connecting plate 11 and two support rods 12 . The fixed connection plate 11 is used to connect with the oil pipe head 21, and the lower ends of the two support rods 12 are respectively connected to the fixed connection plate 11 by bolts.

[0029] The feeding mechanism includes a fixed upper platen 13 ...

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Abstract

The invention relates to a non-releasing gate valve replacement device. The non-releasing gate valve replacement device comprises a blanking plug, a feed-in mechanism, a blanking plug fixing device and a taking safety mechanism, wherein the feed-in mechanism comprises a fixed upper pressing plate for being detachably connected with a support and a feed-in rod, one end of the feed-in rod is connected with the fixed upper pressing plate, the other end of the feed-in rod is detachably connected with the blanking plug, and the feed-in rod can penetrate a to-be-replaced gate valve; and the outer portion of the feed-in rod is sleeved with the taking safety mechanism. According to the non-releasing gate valve replacement device, a four-way gate valve (an upper flange) and a sealing gasket ring and the like of a christmas tree can be replaced on the conditions of non-releasing with pressure, and safety and reliability in the valve replacement process are guaranteed; yield reduction caused by well killing is avoided, oil and gas resources are effectively protected, and environmental pollution caused by well killing is avoided.

Description

technical field [0001] The invention relates to the field of oil and gas exploitation equipment, in particular to a replacement device for a hand-free gate valve. Background technique [0002] At present, the wellhead devices of gas trees in various oilfields across the country, after decades of exploitation, due to erosion, corrosion, or aging of valve seals, the main control components of the wellhead devices (such as gate valves) have leaks to varying degrees. Leakage of gate valves is very unfavorable to the safe production of gas wells, and natural gas contains a lot of harmful gases. These harmful gases not only seriously threaten people's health, but also cause environmental pollution. At the same time, they will also cause serious corrosion damage to metal equipment and tools. . Once the wellhead is out of control, the consequences will be unimaginable, which may cause fire, explosion and personal injury accidents. Therefore, it is necessary to replace the gate valv...

Claims

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Application Information

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IPC IPC(8): E21B23/00
Inventor 刘彬韦宗林马新民魏民
Owner TOP WELL PETROLEUM TECH COMPANY