Coiled tubing type deep lunar soil drilling system

Abstract

The invention relates to a coiled tubing type deep lunar soil drilling system which comprises a submersible drill bit, coiled tubing, a bit pressure compensation propelling device, a gooseneck tubingfeeder and a tubing reeling wheel disc. One end of the coiled tubing is wound on the tubing reeling wheel disc in a curled manner, and the gooseneck tubing feeder and the tubing reeling wheel disc arearranged in a spaced manner. After extending on the gooseneck tubing feeder, the continuous tubing penetrates through the bit pressure compensation propelling device and is connected with the submersible drill bit. Bit pressure is compensated by the bit pressure compensation propelling device, the length of the tubing can be increased without disassembling and assembling a power system, and therefore the drilling depth is adjusted, the lunar surface working time of astronauts is saved, and the lunar surface working efficiency is improved.

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 p...

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