Steam injection thermosensitive expanding and folding type multiple-segment packer

Abstract

The invention relates to a steam injection thermosensitive expanding and folding type multiple-segment packer, which comprises a power module, a packing module and an exploiting module. The power module comprises a dual power head drilling machine, a dual power head and a pump, a movable three-wall casing pipe with three-layer structure of the exploiting module is fixedly connected with a movable part of the dual power head, and a fixed outer pipe in the exploiting module is fixedly connected with a fixed part of the dual power head. In the steam injection thermosensitive expanding and folding type multiple-segment packer, the movable three-wall casing pipe with three-layer structure can be used as a channel for pumping high temperature steam and exploiting and transporting pulp mixed with target minerals, the matching degree of dual layer high-temperature resistant rubber with the upper and lower edge curve check rings is effectively improved by the unique contour design of a biomimetic top limb so that the packing effect is effectively strengthened further, and multiple segment packing can be realized by an expanding type folded rod system structure and multiple-group structure of the packing module so that the packing effect is further improved.

Description

technical field [0001] The invention relates to a multi-stage packer, in particular to an expandable foldable multi-stage packer using a heat-sensitive metal sheet and a steam injection device, which is used for exploiting natural resources such as oil shale, natural gas hydrate, ground water, and petroleum Effectively isolate the overlying and underlying strata. Background technique [0002] When mining oil shale and other minerals, since oil shale and other minerals are often located in a certain layer of strata, and sometimes only minerals in a specific layer need to be mined instead of all minerals; natural gas hydrate is formed in land permafrost It is a solid compound formed by methane and water under low temperature and high pressure conditions, which has the characteristics of wide distribution and huge reserves; sometimes when extracting groundwater, it is necessary to extract groundwater from a certain level to prevent mutual pollution between groundwater at differ...

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. It is easy to cause mutual pollution of natural resources such as oil shale, natural gas hydrate, groundwater, and petroleum between the upper and lower reservoirs, thereby affecting the quality of mined minerals. adversely affect

Moreover, the conventional packer has a complex structure and a large number of components, resulting in high processing costs, complex on-site operation processes, and low reliability of the overall tool

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