Collective fluid flow system and its implications for gas hydrate accumulation in the north slope of the South China Sea

ZHANG Xudong; YIN Cheng; ZENG Fanxiang; ZHAO Bin

2021 Vol. 40, No. 2-3

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ZHANG Xudong, YIN Cheng, ZENG Fanxiang, ZHAO Bin. Collective fluid flow system and its implications for gas hydrate accumulation in the north slope of the South China Sea[J]. Geological Bulletin of China, 2021, 40(2-3): 280-286.

Citation:

ZHANG Xudong, YIN Cheng, ZENG Fanxiang, ZHAO Bin. Collective fluid flow system and its implications for gas hydrate accumulation in the north slope of the South China Sea[J]. Geological Bulletin of China, 2021, 40(2-3): 280-286.

Collective fluid flow system and its implications for gas hydrate accumulation in the north slope of the South China Sea

1.
Key Laboratory of Marine Mineral Resources, Ministry of Natural Resources/Guangzhou Marine Geological Survey, Guangzhou 510075, Guangdong, China
2.
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation/Southwest Petroleum University, Chengdu 610500, Sichuan, China
3.
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, Guangdong, China

Received Date: 13 May 2020

Revised Date: 29 December 2020

Publish Date: 15 March 2021

Abstract

Abstract

Based on 3D high-precision seismic data used to analyze the collective fluid flow systems in the Taixinan Basin, a collective fluid flow system including faults, gas chimneys, mud volcano, and mud diapir was identified in the study area.The main characteristics of the collective fluid flow system in the study are manifested as follows: a, association of faults with gas chimneys; b, consistence of the development area of gas chimneys with the distribution area of Bottom Simulating Reflection (BSR), and a certain length of BSR identified above the gas chimney; c, development of a large number of small scale faults and micro-fissures in the surrounding and overlying strata resulting from mud diapirs/mud volcanoes, and formation of gas hydrate caused by upward migration of the middle and deep fluids along the rupture zone to the stable zone.Therefore, the collective fluid flow system in the study area provides a source of fluid for the development of gas hydrate, which is conducive to the accumulation of gas hydrate.It is of great significance for revealing the enrichment rule of gas hydrate and can provide references for gas hydrate exploration in other regions.
- TaiXinan Basin /
- focused fluid /
- flow systems /
- gas hydrate /
- north slope of the South China sea

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References

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