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Seabed pore water collecting device

A collection device and pore water technology, which is applied in measuring devices, sampling devices, sampling, etc., can solve the problems of low service life, electromagnetic valves are easily corroded by seawater, and cannot maintain the purity of pore water in situ, and achieve the effect of improving resolution

Inactive Publication Date: 2016-09-21
GUANGZHOU MARINE GEOLOGICAL SURVEY +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such structures are susceptible to seawater contamination and cannot maintain the purity of in situ pore water
In addition, due to the influence of materials and structures, components such as solenoid valves are also susceptible to seawater corrosion, resulting in a lower life span

Method used

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  • Seabed pore water collecting device
  • Seabed pore water collecting device
  • Seabed pore water collecting device

Examples

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Embodiment Construction

[0027] Such as figure 1 , 2 As shown, the seabed pore water collection device 100 according to one embodiment of the present invention may generally include a sampling column 20 for collecting pore water at different depths, and a control barrel 10 for controlling the working process of the sampling column 20 .

[0028] The sampling column 20 is composed of a plurality of sampling bottles 30 connected end to end, each sampling bottle 30 is provided with two sealed and independent sample storage chambers 31, 37, and one end of each sample storage chamber 31 is provided with a The passages 36 and 39 communicate with each other and are respectively controlled by the solenoid valves 32 and 38 , and the opening ends of the passages 36 and 39 are provided with a filter layer 21 .

[0029] The control bucket 10 is installed at one end of the sampling column 20, and includes a sealed operating chamber 11. A control unit for controlling the operation of the sampling bottle 30 and an e...

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Abstract

The invention provides a seabed pore water collection device, comprising: a sampling column, which is composed of a plurality of sampling bottles connected end to end, each sampling bottle is provided with two sealed and independent sample storage chambers, and one end of each sample storage chamber There is a channel connected to the outside of the sampling bottle and controlled by a solenoid valve, and a filter layer is provided at the opening end of the channel; the control barrel is installed at one end of the sampling column, including a sealed operating room, and a control sampling bottle installed in the operating room The working control unit, and the power storage unit that provides power for the control unit; the control unit controls the two solenoid valves of each sampling bottle to open at intervals for a certain period of time according to predetermined conditions when sampling, so as to realize sequential sampling. The invention collects samples successively through two sample storage rooms, so that the samples in the second sample storage room can avoid being polluted by seawater, improve the resolution of pore water samples, and provide technical support for the fine detection of natural gas hydrate geochemical characteristics .

Description

technical field [0001] The invention relates to the field of seabed geological research, in particular to a collection device capable of extracting pollution-free in-situ pore water from the seabed. Background technique [0002] In the hydrate accumulation area, due to the ubiquitous pressure and temperature as well as the differences in concentration and composition of the underground medium, the hydrocarbon gases and fluids released during the formation or decomposition of hydrates can be deposited on the overlying seabed through dynamic migration. A large number of practices have proved that the anomalies of hydrocarbon gases (such as methane) and other gases (such as H2S) in pore water and bottom seawater are the key to identifying gas hydrates. One of the important signs of existence, by tracking the abnormal distribution and movement of CH4, H2S and other gases in seawater and pore water on site, it can provide clues and basis for fast and efficient exploration of gas ...

Claims

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Application Information

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IPC IPC(8): G01N1/14
CPCG01N1/14G01N2001/1031G01N2001/1418
Inventor 刘广虎陈道华祝有海徐著华吴宣志白名岗程思海赵宏宇陆程雷知生刘纪勇赵红英
Owner GUANGZHOU MARINE GEOLOGICAL SURVEY
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