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Heat-sensitive umbrella type folded multilayer packer

A foldable packer technology, which is applied in sealing/isolation, wellbore/well parts, earthwork drilling and mining, etc., can solve the problems of mutual pollution of minerals, adverse effects on the quality of minerals mined, and unsatisfactory isolation effects, etc. , to achieve the effect of reducing the degree of mutual pollution of minerals, simple structure, and improving the sealing effect

Inactive Publication Date: 2012-04-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing packers are single-layer isolation, and the isolation effect is not very ideal, resulting in mutual pollution of natural gas hydrate, groundwater, oil shale and other minerals between the upper and lower reservoirs, which adversely affects the quality of mined minerals

Method used

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  • Heat-sensitive umbrella type folded multilayer packer
  • Heat-sensitive umbrella type folded multilayer packer
  • Heat-sensitive umbrella type folded multilayer packer

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0043] Below in conjunction with accompanying drawing and embodiment describe in further detail:

[0044] figure 1 It is an overall schematic diagram of a heat-sensitive umbrella-type folding multi-layer packer. As shown in the figure, a heat-sensitive umbrella-type folding multi-layer packer of the present invention includes a power module, a sealing module and a production module;

[0045] Among them, the power module includes a double power head drilling machine 1, a double power head 2 and a pump 3;

[0046] figure 2It is a schematic diagram of the isolation module, and the isolation module includes the upper casing string 6, the upper top cover 7, the large-diameter telescopic connecting rod 8, the small-diameter telescopic connecting rod 9, the upper edge curved surface retaining ring 10, the lower edge curved surface retaining ring 11, the upper pressure Cover 12, bolt 13, upper pressure plate 14, double-layer high temperature resistant rubber 15, bionic upper bow ar...

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Abstract

The invention discloses a heat-sensitive umbrella type folded multilayer packer, which comprises a power module, a packing module and a mining module; a double-power head of the power module drives a movable outer pipe in the mining module to move up and down, and further drives the heat-sensitive umbrella type packing module capable of being axially folded and radially expanded to move up and down; a fixed central pipe with a double-layer structure in the mining module is fixedly connected with the double-power head; the fixed central pipe with the double-layer structure can be used as a passage for mining and transporting target minerals, and the packing effect of double-layer high-temperature resistant rubber is effectively improved by designing a bionic upper bow arm; and the umbrella type folded rod system structure and multiple groups of structures of the packing module can be selected according to the packing requirement, so that multilayer packing is realized. By using the packer, the mining purity of minerals such as oil shale and the like can be effectively improved, and cross contamination among the reservoirs in the mining process is reduced.

Description

technical field [0001] The invention relates to a multi-layer packer, in particular to an umbrella-type folding multi-layer packer using heat-sensitive metal sheets, which is used for effectively removing minerals between upper and lower reservoirs when mining oil shale and other minerals. Quarantine. Background technique [0002] Natural gas hydrate is a solid compound formed by methane and water under low temperature and high pressure conditions in the permafrost zone on land. It has the characteristics of wide distribution and huge reserves; To prevent mutual contamination of groundwater in different layers; when mining oil shale and other minerals, it is usually only necessary to mine a certain layer of minerals instead of all minerals. [0003] Therefore, in order to achieve the purpose of only exploiting and transferring target minerals in a specific layer, packers must be used to achieve it. [0004] Most of the existing packers are single-layer isolation, and the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/122
Inventor 陈晨温继伟
Owner JILIN UNIV
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