Heat-sensitive umbrella type packer for sublevel mining

Abstract

The invention discloses a heat-sensitive umbrella type packer for sublevel mining. The packer comprises a power module, a packing module and a mining module; the power module comprises a drilling machine, a power head and a pump; the packing module is provided with upper and lower level umbrella-like packing rod systems with the same structure, wherein the packing rod systems are respectively positioned on the lower boundary between a target mineral layer and an upper lying stratum and the upper boundary between the target mineral layer and a lower lying stratum; the drilling machine drives amovable central pipe with a double-layer structure in the mining module to move upwards through the power head, and further drives the upper and lower level umbrella-like packing rod systems in the packing module capable of being axially folded and radially expanded, so that the upper lying stratum and the lower lying stratum are packed; and by using the packer, deep mining and layered mining of natural resources such as oil shale and the like can be effectively packed, so that the mining purity of minerals is improved, and cross contamination among the reservoirs is reduced.

Description

technical field [0001] The invention relates to a multi-layer packer, in particular to a thermal packer suitable for the exploration and development of natural resources such as deep natural gas hydrate, groundwater and oil shale, and capable of fully sealing the underlying formation and the overlying formation. Sensitive Umbrella Packer. 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 mining and transporting the target minerals of a specific layer in the middle and sealing the upper and lower strata, it is necessary to us...

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 gas hydrate, groundwater, oil shale and other minerals between the upper and lower reservoirs, which will adversely affect the quality of mined minerals

[0005] In addition, the existing multi-stage packers only isolate the underlying formations, but cannot isolate the overlying formations, nor can they effectively isolate the upper and lower formations at the same time

Images