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A large-diameter packer capable of hanging screens

A large-diameter, screen-pipe technology, which is applied in sealing/isolation, wellbore/well components, construction, etc., can solve the problems of cumbersome operation steps, increased operation cycle, strong impact force, etc., and achieves good suspension effect, setting Stable and reliable effect

Active Publication Date: 2022-06-28
山东普瑞思德石油技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the current field of oil drilling and completion technology, as the length of the oil and gas field well section continues to increase, the working conditions become more and more complex, and it is required to be able to hang longer strings into the well and have reliable sealing, which requires the isolation suspension The suspension capacity of the device is getting stronger and stronger, but the current packers used in oil, gas and water wells have the problem of small suspension force, and in many regional operation sites, there are large displacement of pump trucks, large liquid inertia force, strong impact force, unfinished seating It is very easy to make the well-stayed part of the packer separate from the service part in advance before the sealing operation
[0003] In addition, it is necessary to switch multiple casing strings during traditional operations, which not only has cumbersome operation steps, but also increases the operation cycle. At the same time, the diameters required by each pipe string are different, and it is easy to cause problems that affect the operation due to too small diameters.

Method used

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  • A large-diameter packer capable of hanging screens
  • A large-diameter packer capable of hanging screens
  • A large-diameter packer capable of hanging screens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] see Figure 1 to Figure 8 , a large-diameter packer capable of hanging a screen tube, comprising a well-retaining part and a service part detachably installed in the well-retaining part.

[0058] The well-retaining part includes a self-sealing structure, a seat-sealing mechanism 6 and a hydraulic pushing mechanism.

[0059] The service part includes the lifting and disengaging mechanism, the starting protection mechanism, and the circulation protection mechanism.

[0060] The self-sealing structure includes an upper center pipe 1 , and a bowl rubber cylinder 5 is installed on the outer middle part of the upper center pipe 1 . Specifically, a guard ring 2 is threadedly connected to the upper outer middle part of the upper center pipe 1 , and a vulcanization ring 4 is threadedly connected to the bottom of the guard ring 2 . , the bottom of the vulcanization ring 4 is vulcanized and connected with the top of the bowl rubber cylinder 5.

[0061] The rubber bowl 5 and the ...

Embodiment 2

[0089] This embodiment is optimized on the basis of Embodiment 1, specifically:

[0090] The bottom of the lower joint 15 is also connected with a quick-connecting mechanism, and the quick-connecting mechanism includes a quick-connecting head 22 , a quick-connecting sheath 24 and an adaptable joint 25 .

[0091] The quick connection head 22 is threadedly connected to the bottom of the lower joint 15, the quick connection sheath 24 is threadedly connected to the outside of the lower end of the quick connection head 22, an anti-rotation pin 23 is arranged between the quick connection head 22 and the quick connection sleeve 24, and the adaptable head 25 The top of the swivel is rotatably installed inside the quick connect head 22 and the quick connect sheath 24 .

[0092] An axial rotating groove is formed between the quick connecting head 22 and the quick connecting sheath 24 , and a rotating boss 251 which is matched with the rotating groove is provided on the outer peripheral ...

Embodiment 3

[0097] In this embodiment, on the basis of Embodiment 1, the sealing between various components is optimized, specifically:

[0098] A set of first sealing rings 3 are arranged between the vulcanization ring 4 and the upper central tube 1 , a second sealing ring 13 is arranged between the pushing sleeve 12 and the upper central tube 1 , and a set of first sealing rings 13 are arranged between the pushing sleeve 12 and the lower joint 15 . Three sealing rings 14 .

[0099] A fourth sealing ring 27 is provided between the hydraulic rod 34 and the upper joint 26 , and a fifth sealing ring 29 is provided between the hydraulic rod 34 and the upper ball seat 32 .

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Abstract

The invention relates to the technical field of petroleum equipment, in particular to a large-diameter packer that can be hung with a screen, including a well-staying part and a service part detachably installed in the well-staying part. The well-staying part includes a self-sealing structure, a seating The sealing mechanism and the hydraulic push mechanism; the service part includes the throwing and disengaging mechanism, the starting protection mechanism, and the circulation protection mechanism. The present invention has stable hanging ability, and multiple operations such as setting seal, hanging, well washing, unlocking and recovery can be realized through a set of tools. In addition, after the pipe string of the service part of the present invention is proposed, the pipe string of the well-staying part can provide more Large diameter.

Description

technical field [0001] The invention relates to the technical field of petroleum equipment, in particular to a large-diameter packer capable of hanging a screen. Background technique [0002] In the current technical field of oil drilling and completion, as the length of well sections in oil and gas fields continues to increase and the working conditions become more and more complex, it is required to be able to suspend a longer pipe string into the well and have reliable sealing performance, which requires isolation suspension The suspension capacity of the device is getting stronger and stronger, but the current packers used in oil and gas wells have the problem of small suspension force, and in many areas, there are large displacement of pump trucks, large liquid inertia force, strong impact force, and incomplete sitting. Before the sealing operation, it is very easy to make the retaining part of the packer separate from the service part in advance. [0003] And in the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/128E21B21/10E21B43/10
CPCE21B33/128E21B21/10E21B43/10E21B2200/06
Inventor 王玉婷邢秀贵徐晓跃吴海燕董娜刘智仁孙锐杰耿瑞琪王鹏
Owner 山东普瑞思德石油技术有限公司
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