Laser rock breaking method and device applied to drilling

Abstract

The invention relates to a laser rock breaking method and device applied to drilling. The device comprises a chip removing mechanism, an external drilling rod and an internal drilling rod, wherein the chip removing mechanism comprises a power supply, an electric wire, an air compressor, a sucker, a compression-resistance pipeline and a suction pump; a liquid nitrogen storage tank and an atomizing nozzle are arranged on the external drilling rod, a liquid nitrogen channel, an electric wire, a protection layer and a gas circulating area are arranged in the external drilling rod, and the external drilling rod does not rotate; the internal drilling rod comprises a down-hole motor, a down-hold power supply, a laser transmitter, a fiber-optical cable, a conical optical splitter, laser heads, a drilling head, laser holes and a temperature sensor; laser emitted by the laser transmitter can be transmitted by the fiber-optical cable, the fiber-optical cable is divided into four parts in the conical optical splitter, each divided fiber-optical cable is connected with one laser head, and laser can be transmitted out of the laser heads and shot out of the laser holes to heat and break rock. The laser rock breaking device disclosed by the invention has high work efficiency, reduces drilling difficulty and saves drilling cost.

Description

technical field [0001] The invention relates to a drilling rock breaking device, in particular to a laser rock breaking method and device for drilling. Background technique [0002] Drilling is an important link in geological exploration and mineral deposit development. Drilled wells are the only channel for oil and gas to connect oil and gas reservoirs to the surface to form oil and gas production, and it is also the only channel for people to observe and exert influence on oil and gas reservoirs. The underground reserves of oil and gas resources are very rich, which is an important source of energy to support the progress and development of human society. After long-term and large-scale exploitation, the proven oil and gas resources in shallow formations in some areas have been fully exploited. However, there are abundant oil and gas resources under high-hardness rocks in deep formations. Traditional mechanical rotary drilling methods have encountered certain difficultie...

AI Technical Summary

Problems solved by technology

However, there are abundant oil and gas resources under high-hardness rocks in deep formations. Traditional mechanical rotary drilling methods have encountered certain difficulties in drilling high-hardness rocks. Finding an energy-saving, safe and efficient rock-breaking method is a hot spot in current research.

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