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Large-diameter packer capable of hanging screen pipe

A large-diameter, packer technology, used in sealing/packing, wellbore/well components, construction, etc., can solve the problems of increased operation cycle, cumbersome operation steps, strong impact force, etc., and achieve stable and reliable setting. Good hanging effect

Active Publication Date: 2022-05-17
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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  • Large-diameter packer capable of hanging screen pipe
  • Large-diameter packer capable of hanging screen pipe
  • Large-diameter packer capable of hanging screen pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] see Figure 1 to Figure 8 , a large-diameter packer that can be hung with a screen, including a well-staying part and a service part that is detachably installed in the well-staying part.

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

[0059] The service part includes the throwing and separating mechanism, the starting protection mechanism, and the cycle protection mechanism.

[0060] The self-sealing mechanism includes an upper central tube 1, and a rubber bowl 5 is installed on the outer middle part of the upper central tube 1. Specifically, the outer middle part of the upper central tube 1 is threaded with a retaining ring 2, and the bottom of the retaining ring 2 is threaded with a vulcanization ring 4. , the bottom of the vulcanization ring 4 is vulcanized and connected with the top of the bowl rubber cylinder 5 .

[0061] The bowl rubber tube 5 is sealed with the casing in the well th...

Embodiment 2

[0089] This embodiment optimizes on the basis of embodiment 1, specifically:

[0090] The bottom of the lower joint 15 is also connected with a quick-connect mechanism, which includes a quick-connect joint 22 , a quick-connect sheath 24 and a switchable joint 25 .

[0091] The quick connector 22 is threaded at the bottom of the lower joint 15, and the quick connector 24 is threaded outside the lower end of the quick connector 22. An anti-rotation pin 23 is provided between the quick connector 22 and the quick connector 24, and the adapter 25 The top of the top is rotatably mounted on the inside of the quick connector 22 and the quick connector sheath 24.

[0092] An axial rotation groove is formed between the quick connection joint 22 and the quick connection sheath 24 , and a rotation boss 251 cooperating with the rotation groove is provided on the outer peripheral surface of the convertible joint 25 .

[0093] The outer peripheral surface of the transferable joint 25 is in ...

Embodiment 3

[0097] This embodiment optimizes the seal between the various parts on the basis of Embodiment 1, specifically:

[0098] A set of first seal rings 3 is provided between the vulcanization ring 4 and the upper central tube 1, a second seal ring 13 is provided between the push sleeve 12 and the upper central tube 1, and a set of first seal rings 13 is provided between the push 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. By adding a sealing ring between each component, the reliability of sealing is improved.

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Abstract

The invention relates to the technical field of petroleum equipment, in particular to a large-diameter packer capable of hanging a screen pipe, which comprises a letting-in part and a service part detachably mounted in the letting-in part, and the letting-in part comprises a self-sealing structure, a setting mechanism and a hydraulic pushing mechanism; and the service part comprises a lifting and releasing mechanism, a starting protection mechanism and a circulating protection mechanism. According to the invention, the suspension capacity is stable, multiple operations such as seat sealing, suspension, well washing and unlocking recovery can be realized through one set of tool, and in addition, after the pipe column of the service part is lifted out, the pipe column of the well leaving part can provide a larger drift 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 screen pipes. Background technique [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 Before the sealing operation, it is very easy to make the well-staying part of the packer separate from the service part in advance. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(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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