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Wellhead sealing body

A sealing body and interface technology, which is applied in sealing/isolation, wellbore/well components, earthwork drilling, etc., can solve pollution and other problems, and achieve the effect of avoiding environmental pollution

Inactive Publication Date: 2009-05-06
蔺新良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the lifting and unloading of the tubing during the snubbing operation is carried out under external (open-air) conditions, it is inevitable that there will be liquid in the tubing (as little as 2 to 3 tons and as much as 7 to 8 tons of dirty oil and water) Serious pollution to the operation site (Christmas tree and surface, tubing and sucker rod storage surface)

Method used

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Embodiment Construction

[0012] Such as figure 1 As shown, this specific embodiment includes an oil pipe self-sealing device 3, a fixed backup tong 5, an upper lifting support plate 4, a multi-stage hydraulic lifter 6, a swimming slide 7, a lower lifting plate 9, and a pneumatic safety slip 10 , double ram hydraulic blowout preventer 11 and reference scale 16.

[0013] The upper lifting support plate 4, the multi-stage hydraulic lifter 6, the traveling sliding cylinder 7 and the lower lifting plate 9 form a telescopic oil reservoir. The multi-stage hydraulic lifter 6 is fixed between the upper lifting support plate 4 and the lower lifting plate 9, and the swimming slide 7 includes a plurality of sealed and plugged cylinders or skirt-like soft cylinders, and the bottom of the lower cylinder is provided with There is an oil spill pipe interface 8, and the lower end of the movable slide cylinder 7 is fixed with the lower lifting plate 9, and the upper end of the movable slide cylinder 7 is fixed with th...

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Abstract

The invention discloses a well mouth sealing body, which comprises an oil wiper, a fixed spare clamp, a telescopic oil container and a blowout preventer which are airtightly connected on the periphery sequentially from the top down, wherein the middle part of the oil wiper is provided with a space through which an oil pipe can pass through, a safety slip is arranged between the telescopic oil container and the blowout preventer, and the telescopic oil container is provided with an oil spill pipe interface. With the well mouth sealing body, the whole process of lifting and discharging an oil pipe under normal operation is performed in a closed space. The well mouth sealing body can seal a well mouth, wipe oil for the oil pipe, and collect slop obtained from cleaning and oil wiping of the oil pipe to discharge the slop into a storage tank or an oil well casing so as to avoid environment pollution.

Description

technical field [0001] The invention relates to a sealing device for an oil field, in particular to a wellhead sealing body. Background technique [0002] In the process of oil well operation, in order not to pollute the formation, reduce operating costs, increase oil and gas recovery, and ensure safe production, snubbing technology is one of the main measures generally adopted by the petroleum industry at home and abroad. Since the lifting and unloading of the tubing during the snubbing operation is carried out under external (open-air) conditions, it is inevitable that there will be liquid in the tubing (as little as 2 to 3 tons and as much as 7 to 8 tons of dirty oil and water) Serious pollution is caused to the operation site (Christmas tree and surface, tubing and sucker rod storage surface). Contents of the invention [0003] The technical problem to be solved by the present invention is: to provide a wellhead sealing body, which can seal the wellhead of the operati...

Claims

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Application Information

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IPC IPC(8): E21B33/03
Inventor 闫毓霞李增强孙文升刘勇孙建成李杰郑晓忠于军娄新国胡洪浩
Owner 蔺新良
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