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Geophysical characterization of a fine-grained gas hydrate reservoir in the Shenhu area, northern South China Sea: Integration of seismic data and downhole logs
Wang, Jiliang1; Wu, Shiguo1,2; Kong, Xiu1; Li, Qingping3; Wang, Jianxin3; Ding, Rong4; Wang, Jiliang(Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China)
2018-04-01
Source PublicationMARINE AND PETROLEUM GEOLOGY
Volume92Pages:895-903
Contribution Rank第1完成单位 ; 第2完成单位 ; 第3完成单位 ; 第4完成单位
AbstractHigh concentrated gas hydrate deposits in fine-grained sediment are proved to be eligible for exploitation with the current technology. Nevertheless, new insights and more understandings of the accumulation of gas hydrate and characterization of hydrate reservoir in fine-grained sediment are required, which can facilitate the commercial production of gas hydrate in the future. Combining seismic data and downhole logs, here we investigate a fine-grained gas hydrate reservoir in the Shenhu area, northern South China Sea (SCS). Gas hydrate with saturations of 10-45% occurs in fine-grained sediment. Besides the typical bottom-simulating reflectors (BSRs) and high amplitude reflection below BSR, a high amplitude positive reflector (referred to as the top of gas hydrate reservoir reflector; TGHR) exists at the top of high concentrated fine-grained gas hydrate reservoir. According to the result of acoustic impedance inversion, the TGHR is considered to represent a transitional zone from the overlying water-saturated sediment to the underlying high concentrated gas hydrate occurrence zone (GHOZ). Discontinuous BSRs beneath the traditional BSRs are also discovered in the study area, which are interpreted as the seismic evidence of the SII gas hydrate. In the Shenhu area, fluid flow features (such as chimney structures and faults) are found on the ridges where gas hydrate occurs, indicating that gas migration plays a critical role in the formation of gas hydrate in the fine-grained sediment. Our results provide valuable geophysical indications for detecting the presence of gas hydrate in fine-grained sediments.
SubtypeArticle
KeywordGas Hydrate Fine-grained Sediment South China Sea
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.marpetgeo.2018.03.020
URL查看原文
Indexed BySCI
Language英语
WOS KeywordGULF-OF-MEXICO ; BOTTOM-SIMULATING REFLECTORS ; RIVER MOUTH BASIN ; METHANE HYDRATE ; MARINE-SEDIMENTS ; SHORT-RANGE ; DEEP-WATER ; MIGRATION ; VELOCITY ; MARGIN
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000432760400054
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/5965
Collection深海科学研究部_深海地球物理与资源研究室
Corresponding AuthorWang, Jiliang; Wang, Jiliang(Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China)
Affiliation1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
3.China Natl Offshore Oil Corp, Beijing Res Ctr, Beijing 100027, Peoples R China
4.Petrochina Coalbed Methane Co Ltd, Beijing 100028, Peoples R China
First Author AffilicationInstitute of Deep-sea Science and Engineering,CAS
Corresponding Author AffilicationInstitute of Deep-sea Science and Engineering,CAS
Recommended Citation
GB/T 7714
Wang, Jiliang,Wu, Shiguo,Kong, Xiu,et al. Geophysical characterization of a fine-grained gas hydrate reservoir in the Shenhu area, northern South China Sea: Integration of seismic data and downhole logs[J]. MARINE AND PETROLEUM GEOLOGY,2018,92:895-903.
APA Wang, Jiliang.,Wu, Shiguo.,Kong, Xiu.,Li, Qingping.,Wang, Jianxin.,...&Wang, Jiliang.(2018).Geophysical characterization of a fine-grained gas hydrate reservoir in the Shenhu area, northern South China Sea: Integration of seismic data and downhole logs.MARINE AND PETROLEUM GEOLOGY,92,895-903.
MLA Wang, Jiliang,et al."Geophysical characterization of a fine-grained gas hydrate reservoir in the Shenhu area, northern South China Sea: Integration of seismic data and downhole logs".MARINE AND PETROLEUM GEOLOGY 92(2018):895-903.
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