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A hydraulic expansion packer

An expansion packer technology, applied in the direction of sealing/isolation, wellbore/well components, earthwork drilling and production, etc., to achieve the effects of reducing wear speed, uniform contact stress distribution, and prolonging service life

Active Publication Date: 2021-07-20
大庆华油石油科技开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a hydraulic expandable packer, which solves the problems mentioned in the above-mentioned background technology

Method used

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  • A hydraulic expansion packer
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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] see Figure 1-3 , a hydraulically expandable packer, comprising a first joint sleeve 1, the outer side of one end of the first joint sleeve 1 is threadedly connected with a first rubber sleeve seat 2, and the inner fixed sleeve of one end of the first rubber sleeve seat 2 Connected with a rubber sleeve 13, the outer side of the other end of the rubber sleeve 13 is fixedly installed with a second rubber sleeve sleeve 3, and the outer side of one end of t...

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Abstract

The invention relates to the technical field of oil field cementing equipment, and discloses a hydraulically expandable packer, which includes a first joint sleeve, and a first rubber sleeve sleeve is threadedly connected to the outer side of one end of the first joint sleeve. The inner side of one end of the sleeve seat is fixedly sleeved with a rubber sleeve, the outer side of the other end of the rubber sleeve is fixedly installed with a second rubber sleeve sleeve, and the outer side of one end of the second rubber sleeve sleeve is threadedly connected with a second joint sleeve. The present invention changes the rubber cylinder from the traditional rubber cylinder to a special-shaped rubber cylinder through the opening of the stress groove. Using the nonlinear finite element method, the finite element model of the packer rubber cylinder is established by using the ANSYS analysis software. After comparative analysis, the rubber cylinder is obtained. The maximum contact stress is significantly higher than that of conventional rubber cartridges, and the contact stress distribution is even, the sealing performance of the rubber cartridge will be improved, and combined with the energy dissipation effect formed by the internal compression spring of the energy dissipation and stabilization mechanism and the elastic deformation of the movable rod, the rubber can be improved. The connection strength between the first rubber sleeve and the second rubber sleeve.

Description

technical field [0001] The invention relates to the technical field of oil field cementing equipment, in particular to a hydraulic expansion packer. Background technique [0002] A packer is a downhole tool used for stratification in oil production engineering, specifically refers to an elastic sealing element, and thereby isolates the annular space between various sizes of pipe strings and wellbore and between pipe strings, and isolates the production layer , to control fluid production and protect casing downhole tools, for example, the existing hydraulic expansion packer adopts hydraulic expansion structure, which is mainly used in complex oil, gas and water well completion projects to achieve various purposes The downhole isolation and bridge plugging have a significant effect on improving and improving the cementing and completion quality of oil, gas and water wells. It is proved by practical application that this tool is easy to operate and has wide adaptability. It is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/126
CPCE21B33/126
Inventor 常江吴杰
Owner 大庆华油石油科技开发有限公司
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