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Packer

A packer and oil circuit technology, which is used in sealing/packing, wellbore/well components, earth-moving drilling, etc., can solve the problems of irreversibility of the operation process, reducing the progress of oilfield development, and cumbersome sealing and unpacking processes. , to reduce complexity and improve convenience

Inactive Publication Date: 2020-07-28
李军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, common packers are usually unable to achieve multiple setting seals in oil wells
For example, when the hydraulic packer is unsealed, it is necessary to lift the string to unlock the lock ring, which makes the operation process irreversible, so multiple sealing operations cannot be achieved
Even though some packers can achieve multiple sealing, the process of achieving sealing and unsealing is too cumbersome, which will slow down the progress of oilfield development

Method used

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] to combine Figure 1 to Figure 3 As shown, the packer of this embodiment includes a body 1 , a rubber cartridge 2 , a sliding sleeve 3 and a control valve core 4 . Among them, the rubber sleeve 2 is sleeved outside the body 1, and the two ends of the rubber sleeve 2 are respectively sealed and fixed with the outer surfaces of the two ends of the body 1, and the middle section of the rubber sleeve 2 can be radially moved relative to the body 1. Reciprocating expansion and contraction, resulting in seating and unsealing. The inside of the body 1 is provided with a medium chamber 111, a spool hole 112, a first oil passage 121, a second oil passage 122 and a third oil passage 123, and the medium chamber 111 is used to accommodate the medium for driving the rubber cartridge 2 for seat sealing. . The sliding slee...

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PUM

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Abstract

The invention belongs to the field of oilfield development tools and discloses a packer. The packer comprises a body, a rubber sleeve, a sliding sleeve and a control valve element. The rubber sleeve is arranged outside the body in a sleeving manner and can expand and retract in a reciprocating manner radially relative to the body. The body is internally provided with a medium accommodation cavityand a valve element hole as well as a first oilway, a second oilway and a third oilway. The medium accommodation cavity is used for accommodating a medium which drives the rubber sleeve to seal the packer, the sliding sleeve is located in the valve element hole and can move in a reciprocating manner axially, the valve element and the sliding sleeve are controlled to be movably connected and the sliding sleeve can be driven to move in a reciprocating manner axially, one end of the first oilway communicates to the valve element hole while the other end of the first oilway communicates to a gap between the body and the rubber sleeve, one end of the second oilway communicates to the medium accommodation cavity, and one end of the third oilway communicates to an external low pressure pipeline and the other end of the third oilway communicates to the first oilway selectively. The packer is easy to operate and can be used for sealing the packer and unlocking the packer repeatedly.

Description

technical field [0001] The invention belongs to the field of oilfield development tools, and in particular relates to a packer. Background technique [0002] In the process of oilfield development, it is usually necessary to use a packer to achieve sealing and unsealing. According to the structure, the packer can be divided into: self-sealing type, compression type, wedging type, expansion type, combined type, etc.; Spacers can be divided into: lifting column type, rotating column type, self-sealing type, thermal expansion type, etc. [0003] At present, common packers usually cannot achieve multiple setting seals in oil wells. For example, when the hydraulic packer is unsealed, it is necessary to lift the string to unlock the lock ring, which makes the operation process irreversible, so multiple sealing operations cannot be achieved. Even though some packers can achieve multiple sealing, the process of achieving sealing and unsealing is too cumbersome, which will slow dow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/127E21B33/126
CPCE21B33/126E21B33/127
Inventor 蒋玉灵其他发明人请求不公开姓名
Owner 李军