Hypothermal splitting assisted drilling machine

Abstract

The invention discloses a hypothermal splitting assisted drilling machine, and provides a deep geothermal drilling machine which is based on the principle that rock is split automatically by means of a hypothermal solution. The hypothermal splitting assisted drilling machine comprises a drilling head, a drilling head bench and a drill rod; the drilling head and the drilling head bench are located at the lower end of the drill rod; the drilling head is mounted on the drilling head bench; the drilling head, the drill rod and the drilling head bench are of hollow structures; a reaction chamber is arranged in the drilling head bench; a flame jet opening is formed in the surface of the drilling head; the flame jet opening is communicated with the reaction chamber; a pipeline is arranged in the drill rod and communicated with the reaction chamber. According to the hypothermal splitting assisted drilling machine, the rock stratum cracks due to an overhigh temperature gradient by virtue of the characteristics of supercritical water; as a result, the rock stratum is cracked, and the rock fragments are brought out of a borehole by virtue of the Archimedes screw principle; the hypothermal splitting assisted drilling machine provided by the invention is capable of quickly drilling through the rock stratum having extremely high hardness, and therefore, time and economic losses caused by frequent replacement of the drilling head are avoided.

Description

technical field [0001] The invention relates to the field of drilling, in particular to a drilling rig for deep geothermal drilling. Background technique [0002] With the development of society, the environmental protection and efficient utilization of natural energy has become a new hot spot in society. Geothermal has become a rookie in the energy industry due to its advantages such as wide distribution, high energy, simple and convenient mining, and non-polluting use. Geothermal energy has a characteristic: the deeper the reserves, the greater the development potential. However, if geothermal energy is extracted using conventional rotary drilling techniques, the cost increases exponentially as the depth of the geothermal well increases. [0003] When drilling according to the traditional drill bit, when the drill bit encounters a hard and dry underground rock formation, it will often fail to drill, which will cause great friction consumption on the drill bit, and the dri...

AI Technical Summary

Problems solved by technology

[0004] Existing drilling technologies use cold drill bit hard friction to penetrate rock formations. When faced with rock formations with too high hardness, it is often impossible to drill, and only a drill bit with higher hardness can be used to re-drill. However, for some rock formations, using Diamond drilling also has its own difficulties

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