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a hanging packer

A suspension packer and packer technology, applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc., can solve problems such as long operation period, high risk, and large damage to the inner wall of the upper casing, etc. Achieve the effect of reducing operation time and reducing operation risk

Active Publication Date: 2017-01-18
PETRO KING ENERGY TECH HUIZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the hanging packer is set in advance during the running process, the packer can only be removed by milling, which will cause great damage to the inner wall of the upper casing, and the operation period is long and the risk is high

Method used

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Embodiment Construction

[0024] The suspension packer structure of the preferred embodiment of the present invention is as follows figure 1 and figure 2 shown, see also image 3 , the suspension packer includes a mandrel 12, a top joint 6 is connected above the mandrel 12, a rubber sleeve 14 assembly including a rubber sleeve 14 is connected to the lower end of the top joint 6, and a slip assembly is arranged below the rubber sleeve 14 assembly. An unpacking assembly is arranged under the assembly to facilitate the recovery of the packer; among them, the top joint 6 is provided with the outer layer key on the packer delivery tool to rotate the packer string during the lowering process. A keyway 41; the pressure transmission hole 43 of the packer delivery tool is separated from the packer string by a ball seat and its sealing rubber ring; the unsealing component includes an unsealing sleeve, and the unsealing sleeve is provided with a Cooperate with the key block on the packer recovery tool to lift ...

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Abstract

The invention relates to a suspension packer. The suspension packer comprises a mandrel, wherein the upper side of the mandrel is connected with a top joint; the lower end of the top joint is connected with a rubber sleeve component having a rubber sleeve; a slip component is arranged below the rubber sleeve component; an unpacking component for conveniently recovering the packer is arranged below the slip component, wherein a first key slot for fitting an outer-layer key on a packer sending tool to rotate a packer pipe column in the down-pass process is formed in the top joint; a pressure transfer hole of the packer sending tool is separated from the packer pipe column by a ball seat and a sealing rubber ring thereof; the unpacking component comprises an unpacking sleeve; and a second key slot for fitting a key block on a packer recovering tool to lift up the packer pipe column is formed in the unpacking sleeve. The suspension packer can rotate in the down-pass process of the tools without setting beforehand, and can realize the recovery.

Description

technical field [0001] The invention relates to an oil production tool, and more particularly, to a suspension packer. Background technique [0002] In well completion operations, when encountering long horizontal sections, irregular wellbore trajectories, or complex well conditions, the traditional packer can only be used by circulation and lifting and lowering of the string after encountering obstacles during the running process. Lower the tool slowly. When the pump is cycled, there will be an instantaneous excited pressure in the pipe string, which will easily set the hanging packer in advance. If the hanging packer is set in advance during the running process, the packer can only be removed by milling, which will cause great damage to the inner wall of the upper casing, and the operation period is long and the risk is high. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a suspension packer that can rotate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/129
CPCE21B33/127E21B33/129
Inventor 李良辉赖伟华
Owner PETRO KING ENERGY TECH HUIZHOU CO LTD
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