Confirmation of AVO Attribute Inversion Methods for Gas Hydrate Characteristics Using Drilling Results from the Shenhu Area, South China Sea

被引：0
作者：
Xudong Zhang
Cheng Yin
Gulan Zhang
机构：
[1] Southwest Petroleum University,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
[2] Guangzhou Marine Geological Survey,Key Laboratory of Marine Mineral Resources, Ministry of Natural Resources
[3] Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou),undefined
来源：
Pure and Applied Geophysics | 2021年 / 178卷
关键词：
AVO attribute inversion; Gas hydrate; Shenhu area;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Amplitude versus offset (AVO) attribute inversion can help to constrain lithologies and interpret oil and gas accumulations. In this paper, we simulate four different gas hydrate and free gas configurations through AVO forward modeling. When there is no free gas under gas hydrate, the AVO attribute characteristics of gas hydrate are only related to the saturation of gas hydrate. When there is free gas under gas hydrate, if the gas hydrate saturation is high, the AVO attribute characteristics [such as the product of intercept (P) and gradient (G)] are not sensitive to identify gas hydrate. Otherwise, the AVO attribute characteristics are sensitive for identifying gas hydrate, but greatly affected by free gas. The results of this paper constrain the distribution of gas hydrate in the Shenhu area and provide a basis for future gas hydrate exploration.
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页码：477 / 490
页数：13
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[1]  
Andreassen K(1997)Amplitude versus offset modeling of the bottom simulating reflection associated with sub-marine gas hydrate Marine Geology 137 25-40
[2]  
Hart PE(1997)Amplitude versus offset modeling of the bottom simulating reflection associated with submarine gas hydrates Marine Geology 137 25-40
[3]  
MacKay M(2000)Bottom simulating reflectors seismic velocities and AVO effects Geophysics 65 54-67
[4]  
Andreassen K(1997)Principles of AVO cross plotting Leading Edge 4 337-342
[5]  
Hart PE(2009)Variations in biogenic components of Late Miocene-Holocene sediments from Shenhu area in the northern South China Sea and their geological implication Marine Geology and Quarternary Geology 29 1-8
[6]  
MacKay M(1998)Sediments with gas hydrates: Internal structure from seismic AVO Geophysics 63 1659-1669
[7]  
Carcione JM(2017)Characteristics of high gas hydrate distribution in the Shenhu area, northern slope of South China Sea Earth Science Frontiers 24 15-23
[8]  
Tinivella U(2013)Bio-genetic and sub-biogenetic gas resource potential and genetic types of natural gas hydrate in the northern marginal basins of South China Sea Natural Gas Industry 33 121-134
[9]  
Castagna JP(1992)A mechanism for the formation of methane hydrate and seafloor bottom-simulating reflectors by vertical fluid expulsion Journal of Geophysical Research Solid Earth 97 7025-7041
[10]  
Chen F(1997)Amplitude versus offset modeling of the bottom simulating reflection associated w ith submarine gas hydrates Marine Geology 137 25-40
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