A coiled tubing deep lunar soil drilling system

Abstract

The invention relates to a coiled tubing deep lunar soil drilling system, which comprises a submersible drill bit, a coiled tubing, a pressure-on-bit compensation propulsion device, a gooseneck tube feeder and a coiled tube wheel, and one end of the coiled tubing is coiled and wound on the On the reel, the gooseneck pipe feeder is spaced apart from the reel reel, and the coiled tubing is extended on the gooseneck pipe feeder and passes through the WOB compensation propulsion device, and is connected with the The submersible bit is connected. The weight on bit of the present invention is compensated by the weight on bit compensation propulsion device, and the length of the oil pipe can be increased without disassembling the power system, so as to adjust the drilling depth, save the working time of astronauts on the lunar surface, and improve the working efficiency of the lunar surface.

Description

technical field [0001] The invention relates to the technical field of lunar exploration, in particular to a coiled tubing deep lunar soil drilling system, in particular to a coiled tubing drilling system suitable for deep drilling of lunar soil and lunar rocks. Background technique [0002] In the 1960s and 1970s, the United States and the Soviet Union successively carried out multiple lunar sampling and return missions, bringing a large amount of lunar soil and rocks back to Earth for analysis, providing important research methods and research basis for humans to understand the moon. [0003] In recent years, my country has proposed a three-step strategy for lunar exploration, and strives to collect key samples and return them to the earth on the basis of on-site analysis and sampling in the third phase of lunar exploration, for laboratory analysis and research, so as to have a deeper understanding of the moon. The huge boulders, rock outcrops, deep lunar soil, and lunar ro...

AI Technical Summary

Problems solved by technology

[0004] The natural environment of the moon is relatively harsh. The low gravity of the lunar surface cannot provide sufficient drilling pressure, and the temperature difference between day and night is large. Therefore, it is more difficult to design equipment suitable for deep lunar soil and lunar rock drilling

[0005] Drill-pipe continuous drilling system can transmit larger and more stable drilling pressure by manually providing drill pressure, and can artificially control the reverse direction of drilling, which is simple and reliable; however, the drilling depth of drill-pipe drilling system is completely dependent on the drilling depth. The length of the rod, as the drilling depth increases, the number of rod groups increases, resulting in an increase in overall weight, which puts forward extremely high requirements for the carrying capacity of the spacecraft; during the drilling process, it is necessary to take over the operation, increasing the work of astronauts on the lunar surface Burden, reduce work efficiency, frequent disassembly and assembly of the motor and rod group increases the instability of the drilling system

[0006] The cable-type continuous drilling system carries the cable to drill behind the drill bit system. The cable can be bent and stretched, so it can achieve a large depth of drilling with a relatively small overall equipment; because the cable is a flexible body, it can only It provides control signal transmission between the drill bit and the ground control system but cannot provide torque and WOB for the drill bit. Therefore, an autonomous submersible drilling vehicle must be equipped with an integrated anchoring device during the drilling process, which has a certain system complexity and increases the cost of the spacecraft. Carrying burden

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