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Drawing blowout prevention device

A blowout preventer and blowout preventer technology, which is used in wellbore/well components, sealing/packaging, earth-moving drilling, etc. Pollution and other problems, to achieve the effect of good water removal, convenient assembly and disassembly, and good protection effect

Pending Publication Date: 2019-10-15
中石化石油工程技术服务有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of technical measure can prevent the overflow of pumping sewage, it cannot completely seal the hydraulic pumping blowout prevention box, which makes the pumping rope carry a large amount of water from the hydraulic pumping blowout prevention box during walking. Residual liquid, these residual liquids spread outward due to friction, collision and other influences during the walking process of the pumping rope (including the outward splashing phenomenon and the flow phenomenon formed by scraping), and the outwardly diffused residual liquid cannot form effective collected and scattered on the surrounding equipment including workover rigs, wellhead devices, etc., causing pollution to the surrounding environment and also causing corrosion to the surrounding equipment

Method used

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  • Drawing blowout prevention device
  • Drawing blowout prevention device
  • Drawing blowout prevention device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 , figure 2 , image 3 with Figure 4 As shown, the present invention includes a suction lubricator 2 , a collecting tray 1 and a protection outer cylinder 5 .

[0028] Wherein, the swabbing lubricator 2 is a conventional swabbing lubricator or a hydraulic swabbing lubricator in a relaxed state. The bottom end of the swabbing blowout preventer 2 is connected to the top of the wax removal gate of the wellhead device with a threaded structure, and the swabbing blowout preventer 2 is vertically upward on the wellhead device.

[0029]The collecting tray 1 is a trough-shaped structure whose internal dimension is larger than that of the protective outer cylinder 5 described below. The bottom 11 of the collecting tray 1 is provided with a nozzle perforation 14 that allows the above-mentioned suction nozzle 2 to pass through and connect to the wellhead device. The edge of the nozzle perforation 14 is uniformly provided with a plurality of Bolt holes 13, these ...

Embodiment 2

[0037] The other contents of this embodiment are the same as those of Embodiment 1, except that the rubber plug sealing ring is missing on the suction rope protecting the outer cylinder.

Embodiment 3

[0039] The other content of this embodiment is the same as that of Embodiment 1, except that the wiper is missing on the suction rope in the protection outer cylinder.

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Abstract

The invention discloses a drawing blowout prevention device. The drawing blowout prevention device comprises a drawing blowout prevention pipe connected to a wellhead device, and a protection outer cylinder for preventing liquid on the drawing blowout prevention pipe from being diffused outwards and collecting the liquid is arranged outside the drawing blowout prevention pipe. The protection outercylinder is arranged on the periphery of the drawing blowout prevention pipe in a covering manner, the protection outer cylinder does not affect the wellhead blowout prevention safety technical need,and can effectively collect the outwards-diffused liquid (including outwards-splashed liquid and flowing liquid formed through scraping) generated in the drawing work, the outwards-diffused liquid isprevented from polluting the surrounding, the protection effect on the environment is good, and practicability is high.

Description

technical field [0001] The invention relates to wellhead blowout prevention equipment used in oil and gas well drilling, in particular to a wellhead blowout prevention device used in oil and gas well drilling operations. Background technique [0002] Swabbing is a method of lifting and lowering a pumping rod with a rubber tube (that is, a swabbing rod) in downhole pipelines (such as oil pipes, water pipes, etc.), so that the liquid in the well is discharged out of the well. The swabbing operation is mainly used in low-production wells, marginal wells and other working conditions. Through the swabbing operation, the liquid level in the well can be continuously reduced, and then the liquid near the wellbore can continue to flow to the bottom of the well, so as to completely drain the product near the wellbore. The technical purpose of liquefying and releasing natural gas production capacity. [0003] Oil and gas wells need to be connected with blowout prevention equipment on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06E21B33/08
CPCE21B33/06E21B33/08
Inventor 张超伟李发全何世云谭羲韦廖程朱德强魏东但伟成李中宇周伟杜兴沛陶祖文刘建勇
Owner 中石化石油工程技术服务有限公司
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