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Dual-purpose packer device for safe tripping in and anti-pollution fishing for layered oil production

A technology of layered oil recovery and dual-purpose devices, which is applied in the direction of wellbore/well valve devices, earthwork drilling and production, wellbore/well components, etc., and can solve problems such as pollution

Active Publication Date: 2019-01-25
DAQING SHENGWEI MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to aim at the above-mentioned defects existing in the prior art, and to provide a dual-purpose device for safe running and anti-pollution fishing of a packer for layered oil production. Press the rubber and other suspended matter in the oil well casing down to the bottom of the production string; when the wellhead is raised on the production string, the liquid in the production string is released downhole through the cooperation of the pressure relief ball seat and the sealing steel ball release, thereby avoiding the contamination of the wellhead ground

Method used

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  • Dual-purpose packer device for safe tripping in and anti-pollution fishing for layered oil production
  • Dual-purpose packer device for safe tripping in and anti-pollution fishing for layered oil production
  • Dual-purpose packer device for safe tripping in and anti-pollution fishing for layered oil production

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Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1, with reference to attached Figure 1-5 , a dual-purpose device for safe running and anti-pollution salvage of a packer for layered oil recovery mentioned in the present invention, its technical solution is: comprising a falling object downpressor 5, an oil drainage carrier 6, and a pipe string connection nipple 7 , the retaining ring of the lower pressure device 8, the sealing rubber ring 9, the booster sleeve 10, the safety support spring 11, the pressure relief ball seat 12,

[0026] The bottom of the outer wall of the pipe string connection nipple 7 is connected to the oil discharge carrier 6, and the top of the outer wall of the pipe string connection nipple 7 is connected to the downpressor retaining ring 8, and the outer side of the pipe string connection nipple 7 is covered with a falling object to press down The lower side of the falling object depressor 5 is a depressing fence, and the top is provided with a constriction joint, and the constrictio...

Embodiment 2

[0039] Embodiment 2, with reference to attached Figure 6 , the present invention differs from Embodiment 1 in that: a limit boss 12.8 is provided on the outer wall of the lower oil drain body 12.3 of the pressure relief ball seat 12, and the limit boss 12.8 is located between the liquid inlet hole 18 and the liquid outlet hole 19 In this way, the limit boss 12.8 is stuck on the bottom of the oil drain carrier, which can ensure the position of the liquid inlet hole 18 and the liquid outlet hole 19, thereby ensuring that the liquid inlet hole 18 is located in the inner cavity of the oil drain carrier 6 , The liquid outlet hole 19 is located outside the bottom of the oil drainage carrier 6, so that the liquid in the pipe string connection nipple 7 and the oil production string can be discharged smoothly.

[0040] Refer to Example 1 for the specific usage method. It should be noted that the position-limiting boss 12.8 can ensure the position of the liquid inlet hole 18 and the li...

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Abstract

The invention relates to a dual-purpose packer device for safe tripping in and anti-pollution fishing for layered oil production The technical scheme of the dual-purpose packer device for safe tripping in and anti-pollution fishing for layered oil production is as follows: the bottom of the outer wall of a pipe column connecting nipple is connected with an oil drainage carrier, the top of the outer wall of the pipe column connecting nipple is connected with a retainer ring of a press device, the outer side of the pipe column connecting nipple is sleeved with a falling object press-down device;the inner cavity of the pipe column connecting nipple is provided with an anti-pollution fishing seat consisting of a pressurizing sleeve, a safety support spring and a pressure relief ball seat, thelower part of the pressure relief ball seat is provided with a oil spill main body, the oil spill main body is provided with a liquid inlet hole and a liquid outlet hole; oil drainage is realized bymatching the oil spill main body with the central hole at the bottom of the oil drainage carrier. The dual-purpose packer device for safe tripping in and anti-pollution fishing for layered oil production has the advantages that when the oil production pipe column is tripping in the oil well, the suspended substances such as rubber and the like in the oil well casing are pressed down to the bottomof the oil production pipe column through the falling object press-down device, and when the oil production pipe column is lifted out of the wellhead, the liquid in the oil production pipe column is released and discharged underground through the cooperation of the pressure relief ball seat and a sealing steel ball, thereby the pollution problem of the surface of the wellhead is avoided.

Description

technical field [0001] The invention relates to a tool and method for downhole operation in the petroleum industry, in particular to a dual-purpose device for safe running and pollution prevention and fishing of a packer for layered oil production. Background technique [0002] In the process of oil production, layered oil recovery is an increasingly mature and effective method. However, because the layered oil production string is relatively long, it can be 300 meters to 16,000 meters in length. Because it is layered oil recovery, so There are many packers that need to be lowered. When there are falling objects in the oil well during construction, some of them will be suspended in the middle and upper part of the liquid surface. In this way, when the packer is lowered, it is easy to trigger the halfway setting of the hydraulic packer, resulting in misoperation, which will increase the operating cost , and at the same time prolong the construction period, sometimes serious ...

Claims

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Application Information

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IPC IPC(8): E21B23/06E21B23/08E21B31/20
CPCE21B31/20E21B34/14E21B41/00Y02A20/204
Inventor 明士皓
Owner DAQING SHENGWEI MACHINERY MFG