Non-interfering type deep sea hydrate probe boring sampling apparatus

Abstract

The invention relates to a non-interference deep-sea hydrate boring sampler, which comprises a catch head, a pull rod, a vertical locking tool, a piston and a sample protecting cylinder which are connected through threads. The pull rod is fixed with a heat-insulation pressure-maintenance cylinder through a lockpin; a control system and a pressure compensation device are arranged in the heat-insulation pressure-maintenance cylinder; the heat-insulation pressure-maintenance cylinder, a ball valve body and a temperature pressure recorder are connected together; the ball valve body, a peripheral locking mechanism and a sampling pipe are connected through flanges; a core cutting mechanism is arranged in the sample protecting cylinder; and the sample protecting cylinder is arranged in the sampling pipe. The whole device is arranged on a shell of the device through the locking mechanism; the shell is connected with a drilling tool to transmit torque and support weight of internal devices. When the device carries out sampling boring operation, the sampling pipe extends from the lower edge of a drill bit, fluid can not spurt a rock sample, thereby facilitating the improvement of sampling utilization percentage. The heat-insulation pressure-maintenance cylinder is retracted by a rope, so that time of the rock sample to the ground is shortened, thereby facilitating heat insulation and pressure maintenance of the rock sample.

Description

technical field [0001] The invention belongs to a special device for hydrate drilling and sampling, and is mainly applicable to the technical field of marine exploration. Background technique [0002] At present, the deep-sea sampling devices used in China are all non-drilling type, and the sampling depth is only 10 meters, and it is impossible to sample deep sediments; some of the foreign ones are drilling type, but they are all complicated in structure, the sampling effect is not ideal, and there is no pressure The temperature recording device cannot meet the needs of deep sea exploration in the future. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a non-interfering deep-sea hydrate drilling sampling device. When performing deep-sea drilling, a large amount of sediment can be obtained by using the non-interfering deep-sea hydrate drilling sampling device, regardless of the depth of the sediment. As long as i...

AI Technical Summary

Problems solved by technology

[0002] At present, the deep-sea sampling devices used in China are all non-drilling type, and the sampling depth is only 10 meters, and it is impossible to sample deep sediments; some of the foreign ones are drilling type, but they are all complicated in structure, the sampling effect is not ideal, and there is no pressure The temperature recording device cannot meet the needs of deep sea exploration in the future

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