An experimental study on visual detection of hydrate-bearing sediments based on ERT

ZHAO Jinhuan; LIU Changling; ZOU Changchun; CHEN Qiang; MENG Qingguo; LIU Yang; BU Qingtao

doi:10.16562/j.cnki.0256-1492.2021060901

2021 Vol. 41, No. 6

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Article navigation > Marine Geology & Quaternary Geology > 2021 > 41(6): 206-212

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ZHAO Jinhuan, LIU Changling, ZOU Changchun, CHEN Qiang, MENG Qingguo, LIU Yang, BU Qingtao. An experimental study on visual detection of hydrate-bearing sediments based on ERT[J]. Marine Geology & Quaternary Geology, 2021, 41(6): 206-212. doi: 10.16562/j.cnki.0256-1492.2021060901

Citation:

ZHAO Jinhuan, LIU Changling, ZOU Changchun, CHEN Qiang, MENG Qingguo, LIU Yang, BU Qingtao. An experimental study on visual detection of hydrate-bearing sediments based on ERT[J]. Marine Geology & Quaternary Geology, 2021, 41(6): 206-212. doi: 10.16562/j.cnki.0256-1492.2021060901

An experimental study on visual detection of hydrate-bearing sediments based on ERT

1.
Key Laboratory of Gas Hydrate of Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266237, China
2.
Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
3.
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China

More Information

Corresponding author: LIU Changling, qdliuchangling@163.com

Received Date: 09 June 2021

Revised Date: 23 August 2021

Publish Date: 28 December 2021

Abstract

Abstract

Reservoir evaluation of gas hydrate based on electrical response, as a key mean to discriminate natural gas hydrate and estimate its resource potential, plays an important role in the exploration and development of natural gas hydrate. The physical simulation experiment for gas hydrate formation in sediments was carried out in this paper to detect the morphology of dispersed hydrate and massive hydrate based on electrical resistivity tomography during the formation of hydrate. The resistivity responses of the two gas hydrate morphology were carefully studied. The results show that the high resistivity of dispersed hydrate has a scattered distribution pattern whereas the high resistivity of massive hydrate distributed in a concentrated pattern. The free gas in sediments may cause the position deviation of massive hydrate. The resistivity response characteristics of dispersed hydrate and massive hydrate change largely. Compared to the dispersed hydrate, the resistivity of massive hydrate increases rapidly with the formation of hydrate.
- natural gas hydrate /
- electrical resistivity tomography /
- morphology /
- resistivity response

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References

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