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Non-well-killing pressurized semi-automatic gate replacing device

A semi-automatic, gate technology, applied in wellbore/well components, earthmoving, sealing/packing, etc., which can solve the problems of high valve risk, complicated operation and high killing cost

Pending Publication Date: 2020-05-08
松原市云生石油技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of well killing is high and the operation is complicated, so it is generally not used
The risk of replacing the valve under pressure is high

Method used

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  • Non-well-killing pressurized semi-automatic gate replacing device
  • Non-well-killing pressurized semi-automatic gate replacing device
  • Non-well-killing pressurized semi-automatic gate replacing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] like figure 1 , figure 2 , image 3 and Figure 4 As shown, this embodiment includes a lead screw motor 1, a lead screw 2, a blowout preventer 3, a first O-ring 4, a second O-ring 5, a bearing seat 6, a thrust bearing 7, a blowout preventer 8, and a pressure sensor 9. Nut push rod 10, sealing plug 11, plug setting assembly 12, plug assembly 13, third O-ring 14, first flange 15;

[0017] The upper end of the lead screw 2 is connected with the lead screw motor 1, the anti-blowout sleeve 3 is set on the upper end of the nozzle 8, the upper part of the lead screw 2 is a polished rod, and the lower part of the lead screw 2 is a screw, passing through the anti-blowout sleeve 3, Three first O-rings 4 are used to seal between the lead screw 2 of the polished rod section and the blowout preventer 3, and the bearing seat 6 is set between the lead screw 2 of the polished rod section and the blowout preventer 3 at the lower part of the first O-ring 4 Thrust bearing 7, the blow...

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PUM

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Abstract

The invention discloses a non-well-killing pressurized semi-automatic gate replacing device which comprises a lead screw motor, a lead screw, a blowout prevention sleeve head, a first O-shaped ring, asecond O-shaped ring, a bearing pedestal, a thrust bearing, a blowout prevention pipe, a pressure sensor, a nut push rod, a sealing plug, a packer setting assembly, a packer assembly, a third O-shaped ring and a first flange plate. After the packer assembly is driven by the lead screw motor to block a wellhead four-way, a wellhead gate is disassembled from the wellhead four-way, and then a new wellhead gate is replaced. Pressurized replacement of an oil field wellhead valve is realized, electric operation is carried out, time and labor are saved, and no risk produces in the replacement process.

Description

technical field [0001] The invention relates to a valve replacement tool for an oil field, in particular to a semi-automatic valve replacement device for snubbing and pressure. Background technique [0002] A valve is connected to the top of the wellhead spool and the flanges on both sides. The valve is a vulnerable part. When it needs to be replaced, it needs to be killed or replaced under pressure due to the pressure in the well (≈0-15MPa). The cost of well killing is high and the operation is complicated, so it is generally not used. The risk of replacing the valve under pressure is high. Contents of the invention [0003] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a semi-automatic gate changing device for snubbing and under pressure. [0004] A semi-automatic gate changing device under pressure without snubbing, including a lead screw motor, a lead screw, a blowout preventer sleeve, a first O-ring, a second ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/00E21B33/03E21B33/06
CPCE21B23/00E21B33/03E21B33/06
Inventor 何晶周首承郭天博赵贵金侯建峰王新强王娜娜陈龙于海峰鹿洪义李赫寇君
Owner 松原市云生石油技术服务有限公司
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