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Self-expansion type efficient packer

A self-expanding, packer technology, used in sealing/packing, wellbore/well components, earth-moving drilling, etc., can solve the problems of poor sealing effect of packers and different expansion rates.

Pending Publication Date: 2021-07-30
吴帮民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a self-expanding high-efficiency packer, which solves the problems related to the existing self-expanding packer and the fixed setting of the rubber cartridge. Bad effect

Method used

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  • Self-expansion type efficient packer

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Embodiment

[0031] Such as Figure 1-5 As shown, the embodiment of the present invention provides a self-expanding high-efficiency packer, including a tubing body 1, and the upper and lower ends of the tubing body 1 are fixedly sleeved with a stop ring 2, and the stop ring 2 is set as a circular platform shape, and the outer side of the bottom end is provided with a rib, which is used to wrap the top end of the expansion rubber tube. The top end of the oil pipe body 1 is fixedly connected with a coupling 3, and the outer middle end of the oil pipe body 1 is fixed with a middle stopper. Sleeve 4, the middle limit sleeve 4 is fixedly welded with the oil pipe body 1, and the outer wall of the oil pipe body 1 between the middle limit sleeves 4 of the two limit rings 2 is provided with an upper expansion rubber cylinder 6 and a lower expansion sleeve. The rubber cylinder 7, the upper expansion rubber cylinder 6 and the lower expansion rubber cylinder 7 have the same specifications, and are mad...

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Abstract

The invention provides a self-expansion type efficient packer, and relates to the field of packers. The invention discloses a self-expansion type efficient packer. The packer comprises an oil pipe body; the upper end and the lower end of the oil pipe body are both fixedly sleeved with limiting rings; the top end of the oil pipe body is fixedly connected with a coupling; the outer side of the middle end of the oil pipe body is fixedly sleeved with middle limiting sleeves; and an upper expansion rubber sleeve and a lower expansion rubber sleeve are movably arranged on the outer wall of the oil pipe body between the middle limiting sleeves of the two limiting rings in a sleeving manner. The self-expansion type efficient packer provided by the invention is simple in overall structure; rapid setting can be achieved after the packer is installed in a well, and meanwhile, two-section setting can be achieved through the two sections of self-expansion rubber sleeves, so that the high sealing performance of the overall packer is guaranteed; and the two sections of self-expansion rubber sleeves are connected with the oil pipe body through springs, and after the oil pipe body is heated to deform, relative movement can be conducted within the deformation range of the springs, so that it is guaranteed that setting is not damaged, and the high efficiency of setting is guaranteed.

Description

technical field [0001] The invention relates to the technical field of packers, in particular to a self-expanding high-efficiency packer. Background technique [0002] As the national economy's demand for oil and natural gas energy continues to increase, the development of oil and gas resources has gradually shifted from focusing on conventional resources to focusing on both conventional and unconventional resources. Among unconventional resources, heavy oil resources have a large proportion and have become one of the main battlefields for development. Among the various processes for developing heavy oil, steam injection thermal recovery technology is the mainstream technology, and downhole insulation is the key technology to ensure thermal recovery effect and improve thermal recovery rate. The high temperature resistant packer is a key downhole supporting tool. It seals the annular space of the tubing and casing during steam injection in heavy oil wells, reducing heat loss...

Claims

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Application Information

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IPC IPC(8): E21B33/122E21B23/06E21B41/00
CPCE21B23/06E21B33/122E21B41/00
Inventor 吴帮民
Owner 吴帮民
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