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Packer

A packer and unpacking technology, applied in the directions of sealing/packing, wellbore/well components, earth-moving drilling, etc. The effect of large number of layers, reliable unsealing and firm seat sealing

Inactive Publication Date: 2007-01-17
东营市祥生工贸有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current packers that can meet the requirements of oil layer isolation are easy to damage the casing, causing bending of the pipe string, eccentric wear of the rod and tube, slipping of the packer, low success rate and difficulty in unsealing, etc.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0007] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0008] In the figure: 1 is the upper joint, 2 is the rubber cartridge assembly, 3 is the inner tube, 4 is the constant pressure device, 5 is the check valve, 6 is the thimble, 7 is the check valve body, 8 is the unsealing shear ring shaft , 9 is the unsealing shearing ring, 10 is the unsealing shearing ring sleeve, 11 is the blocking connection, and 12 is the lower joint. The lower part of the upper joint 1 is connected with the upper part of the rubber cartridge assembly 2, the lower part of the rubber cartridge assembly 2 is connected with the upper part of the check valve body 7, and the check valve body 7 is installed with a check valve 5 and a thimble 6, and the lower part of the check valve body 7 Connect with the upper part of the unsealing shear ring sleeve 10, the upper part of the inner pipe 3 is internally connected with the upper joint 1, the rubber ...

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PUM

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Abstract

This is a kind of packer. The oil pipe is pressed and rubber cylinder is expanded to seal the ring space of oil sleeve. The inner cavity pressure of rubber cylinder assembly keeps constant under the action of check valve. The packer is anchored on the sleeve. After expanding, rubber cylinder assembly firmly attaches on the inner wall of sleeve and seals the ring space of oil sleeve. There is enough anchoring force between rubber cylinder and sleeve to make there is no relative movement between the packer and sleeve. Thus, sealing is firm. Since the rubber cylinder has no slips, the sleeve will not be damaged.

Description

1. Technical field [0001] The invention is a downhole layered oil recovery tool for oil recovery in an oil field, and is a packer. It is a mechanical product. 2. Background technology [0002] It is an effective way to control the rise of water cut in oil wells by implementing layered blocking water recovery technology to seal off high aquifers. Packers are used for stratified water plugging. There are many types of packers. The packer in each well must use a packer with slips to support the pipe string, such as Y221, Y211 and others are all slip-type packers. This type of slip-type packer seat is sealed by the high-hardness slips on the packer to make the casing plastically deformed to firmly support the pipe string. The seal of the rubber cartridge depends on the pipe. The column weight is achieved by compressing the rubber cartridge. Therefore, the current packers that can meet the requirements of oil layer isolation are easy to damage the casing, causing bending of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/127
Inventor 宁艺生仇光录邵宝华荆德杰任延鹏
Owner 东营市祥生工贸有限责任公司
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