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Well killing-free and unloading-free christmas tree wellhead blowout preventer

A technology of Christmas tree and well sealing device, which is applied in the direction of wellbore/well parts, wellbore/well valve device, earthwork drilling and production, etc. It can solve the problems of high labor intensity and cumbersome replacement process, and achieve the reduction of labor intensity, Avoid stratum pressure production and reduce the effect of labor process

Pending Publication Date: 2017-05-24
胡升龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of cumbersome repair and replacement procedures and high labor intensity of the existing oil production wellhead sealing device, the present invention provides a pressure-free well without unloading Christmas tree wellhead sealing device, the pressure-free well without unloading Christmas tree wellhead sealing device When the seal fails, the sealing parts can be replaced without washing and killing the well and unloading the pumping unit, which saves a lot of manpower and material resources and eliminates the adverse effects on production, making the replacement and maintenance simple and convenient

Method used

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  • Well killing-free and unloading-free christmas tree wellhead blowout preventer
  • Well killing-free and unloading-free christmas tree wellhead blowout preventer
  • Well killing-free and unloading-free christmas tree wellhead blowout preventer

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing:

[0016] Depend on Figure 1 to Figure 4 As shown, a pressure-free well unloading free Christmas tree wellhead sealing device includes a central body 3, which is a four-way inside, and the upper and lower ends of the central body 3 are respectively connected to the packing box and the wellhead Christmas tree flange. Both sides are connected with horizontal valves 2 respectively, and the upper and lower ends of the central body 3 are respectively an upper connector 33 and a lower connector 34 , and there is a bypass valve 1 between both sides of one connector and the horizontal valve 2 . The bypass valve 1 and the horizontal valve 2 communicate with the inside of the central body 3 respectively. In order to make the horizontal valve 2 and the bypass valve 1 conveniently fixed, the left and right sides of the central body 3 are respectively provided with horizontal valve conne...

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Abstract

The invention relates to a well killing-free and unloading-free christmas tree wellhead blowout preventer. The problems that the existing oil producing wellhead blowout preventer has a complicated maintenance and replacement procedure and high labor intensity are solved. The well control-free and unloading-free christmas tree wellhead blowout preventer is characterized in that the left and right sides of a center body (3) are respectively connected with a horizontal valve (2), and a bypass valve (1) is arranged between a joint of the center body (3) and the horizontal valve (2); and the bypass valve (1) and the horizontal valve (2) are respectively communicated with the inside of the center body (3). When the well killing-free and unloading-free christmas tree wellhead blowout preventer fails in sealing, a sealing component can be replaced without flushing and killing a well and unloading a pumping unit, so that a large amount of manpower and material resources and the adverse effects caused by production are eliminated, and the replacement and maintenance are simple and convenient.

Description

technical field [0001] The invention relates to the field of oil fields, in particular to a wellhead sealer for pressure-free wells and unloading-free Christmas trees. Background technique [0002] The Christmas tree wellhead sealer is used on the Christmas tree in the daily production of oil production wells. It is closed when the polished rod sealing packing and packing box are replaced to block the pressurized liquid in the tubing. Under daily consumption and long-term oil, gas and water immersion corrosion, the wellhead sealer of the Christmas tree is damaged and the seal fails, and it needs to be repaired and replaced. At present, the replacement of the sealing device needs to wash and kill the well, remove the load of the pumping unit, and then replace it from the polished rod through the sleeve. Contents of the invention [0003] In order to overcome the problems of cumbersome repair and replacement procedures and high labor intensity of existing oil production wel...

Claims

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Application Information

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IPC IPC(8): E21B34/02
CPCE21B34/02
Inventor 胡升龙张迪丁亮李承峰
Owner 胡升龙
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