A NEWLY DEVELOPED BOTTOM-SUPPORTED SUBMERSIBLE BUOYANT SYSTEM AND ITS TESTING APPLICATION TO A NATURAL GAS HYDRATE AREA

DONG Yifei; LUO Wenzao; LIANG Qianyong; QIU Huanglin; REN Chong; YAN Ru; LIN Jinqing

doi:10.16562/j.cnki.0256-1492.2017.05.020

2017 Vol. 37, No. 5

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Article navigation > Marine Geology & Quaternary Geology > 2017 > 37(5): 195-203

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DONG Yifei, LUO Wenzao, LIANG Qianyong, QIU Huanglin, REN Chong, YAN Ru, LIN Jinqing. A NEWLY DEVELOPED BOTTOM-SUPPORTED SUBMERSIBLE BUOYANT SYSTEM AND ITS TESTING APPLICATION TO A NATURAL GAS HYDRATE AREA[J]. Marine Geology & Quaternary Geology, 2017, 37(5): 195-203. doi: 10.16562/j.cnki.0256-1492.2017.05.020

Citation:

DONG Yifei, LUO Wenzao, LIANG Qianyong, QIU Huanglin, REN Chong, YAN Ru, LIN Jinqing. A NEWLY DEVELOPED BOTTOM-SUPPORTED SUBMERSIBLE BUOYANT SYSTEM AND ITS TESTING APPLICATION TO A NATURAL GAS HYDRATE AREA[J]. Marine Geology & Quaternary Geology, 2017, 37(5): 195-203. doi: 10.16562/j.cnki.0256-1492.2017.05.020

A NEWLY DEVELOPED BOTTOM-SUPPORTED SUBMERSIBLE BUOYANT SYSTEM AND ITS TESTING APPLICATION TO A NATURAL GAS HYDRATE AREA

1.
Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou 510075, China
2.
Natural Gas Hydrate Engineering Research Center, China Geological Survey, Guangzhou 510075, China
3.
Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 510760, China
4.
Qingdao Hisun Ocean Equipment Corporation Limited, Qingdao 266000, China

Received Date: 30 June 2017

Revised Date: 16 September 2017

Publish Date: 28 October 2017

Abstract

Abstract

A bottom-supported submersible buoyant system is designed for long-term seabed environmental monitoring in a natural gas hydrate area. It can be used to study the characteristics of submarine environment in the area and to collect long-term environmental parameters for seabed boundary layers. Through comparison of related parameters acquired before and after, the changes near seafloor resulted from the exploration and pilot production of natural gas hydrate could be monitored and assessed, for the purpose to reduce the risk of environmental changes. The submersible may carry various sensors, such as those for measurement of methane and carbon dioxide, CTD (Conductance, Temperature and Depth), dissolved oxygen, turbidity, transmittance, ADCP (Acoustic Doppler Current Profilers) and single-point RCM (Recording Current Meter). It can be recovered by discarding the clump weight through deep-sea acoustic release transponder. The maximum working depth of this system is 4000 meters and the batteries are sufficient to provide power for all the sensors for more than 180 days. After a successful deep-sea test with effective data and safe recovery in northern South China Sea, it is confirmed that the bottom-supported submersible buoyant system has a promising prospect of application in improving safe and effective use of natural gas hydrate resources.
- bottom-supported submersible Buoyant system /
- long-term environmental monitoring /
- in-situ observation /
- natural gas hydrate

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References

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