The influence of submarine landslides on the distribution and enrichment of gas hydrate and free gas

doi:10.6038/cjg2022P0957

IOCAS-IR > 海洋地质与环境重点实验室

	The influence of submarine landslides on the distribution and enrichment of gas hydrate and free gas
	Zhou JiLin1,2,3,4 ; Wang XiuJuan 1,2,3,5,6; Zhu ZhenYu 7; Jin JiaPeng 1,2; Song HaiBin 8; Su PiBo 9; Qian Jin 1,2; Zhang GuangXu 1,2
	2022-09-01
发表期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN	0001-5733
卷号	65 期号:9 页码:3674-3689
通讯作者	Wang XiuJuan(wangxiujuan@ouc.edu.cn)
摘要	Submarine landslides, gas hydrate and free gas are identified from the three dimensional (3D) seismic data and logging while drilling (LWD) data in the southern Pearl River Mouth Basin. It is a typical area to study the influence of submarine slides on the distribution and enrichment of gas hydrate and free gas. Based on the effective medium model and Archie equation, the P-wave velocity and resistivity of water-saturated sediments are calculated and compared with the measured P-wave velocity and resistivity from LWD data, and gas hydrate-bearing layer and multiple free gas-bearing layers are identified from the anomalies. The differences of the spatial distributions of gas hydrate, free gas and faults in different submarine landslide zones are shown from the coherence and amplitude attributes generated from 3D seismic data. The base of gas hydrate stability zone (BGHSZ) shifts downward due to seafloor erosion caused by submarine landslides. Gas hydrates are widely distributed if the modified BGHSZ is located beneath the sand-rich sediments and the locally developed faults connect free gas-bearing layers to BGHSZ. However, gas hydrate will not be formed where faults cannot arrive at the BGHSZ and free gas is just trapped in local strata due to the lack of fluid flow conduits. This study provides direct evidence to reveal the relationship between the distributions of gas hydrate, free gas and submarine landslides, and also provides the suggestions to find the joint exploitation target of gas hydrate and free gas in the future.
关键词	Submarine landslide Gas hydrate Free gas Faults Pearl River Mouth Basin
DOI	10.6038/cjg2022P0957
收录类别	SCI
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000851307600030
出版者	SCIENCE PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/180772
专题	海洋地质与环境重点实验室
通讯作者	Wang XiuJuan
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Shandong, Peoples R China 2.Lab Marine Mineral Resources, Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao 266237, Shandong, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Ocean Univ China, Key Lab Submarine Geosci & Prospecting Tech, MOE, Qingdao 266100, Shandong, Peoples R China 6.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Shandong, Peoples R China 7.CNOOC Res Inst Co Ltd, Beijing 100027, Peoples R China 8.Tongji Univ, Sch Ocean & Earth Sci, Shanghai 200092, Peoples R China 9.MNR, Guangzhou Marine Geol Survey, Guangzhou 510760, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zhou JiLin,Wang XiuJuan,Zhu ZhenYu,et al. The influence of submarine landslides on the distribution and enrichment of gas hydrate and free gas[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2022,65(9):3674-3689.
APA	Zhou JiLin.,Wang XiuJuan.,Zhu ZhenYu.,Jin JiaPeng.,Song HaiBin.,...&Zhang GuangXu.(2022).The influence of submarine landslides on the distribution and enrichment of gas hydrate and free gas.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,65(9),3674-3689.
MLA	Zhou JiLin,et al."The influence of submarine landslides on the distribution and enrichment of gas hydrate and free gas".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 65.9(2022):3674-3689.