Detection of gas hydrate sediments using prestack seismic AVA inversion

• Published in: Applied geophysics Vol. 12; no. 3; pp. 453 - 464
• Main Authors: Zhang, Ru-Wei, Li, Hong-Qi, Zhang, Bao-Jin, Huang, Han-Dong, Wen, Peng-Fei
• Format: Journal Article
• Language: English
• Published: Beijing Chinese Geophysical Society 01.09.2015; Springer Nature B.V; State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum (Beijing),Beijing 102249,China; Key Laboratory of Marine Mineral Resources,Ministry of Land and Resources,Guangzhou Marine Geological Survey,Guangzhou 510075,China%State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum (Beijing),Beijing 102249,China%Key Laboratory of Marine Mineral Resources,Ministry of Land and Resources,Guangzhou Marine Geological Survey,Guangzhou 510075,China
• Subjects: Consistency; Earth and Environmental Science; Earth Sciences; Gas hydrates; Geophysics; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Inversions; Mathematical models; Natural gas exploration; Reflectors; Saturation; Sediments; Seismic surveys; Seismology; ISEW, South China Sea; BSR; saturation; Gas hydrate; Prestack inversion
• ISSN: 1672-7975; 1993-0658
• DOI: 10.1007/s11770-015-0503-3

Bottom-simulating reflectors (BSRs) in seismic profile always indicate the bottom of gas hydrate stability zone, but is difficult to determine the distribution and features of gas hydrate sediments (GHS). In this study, based on AVA forward modeling and angle-domain common-image gathers we use prestack AVA parameters consistency inversion in predicting gas hydrate sediments in the Shenhu area at northern slope of South China Sea, and obtain the vertical and lateral features and saturation of GHS.