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Natalia Shakhova, Igor Semiletov and Evgeny Chuvilin
This paper summarizes current understanding of the processes that determine the dynamics of the subsea permafrost?hydrate system existing in the largest, shallowest shelf in the Arctic Ocean; the East Siberian Arctic Shelf (ESAS). We review key environme...
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Cheng Lu, Pengfei Xie, Hui Li, Xuhui Zhang, Xiaobing Lu, Bin Zhang, Ziqin Zhang, Xuwen Qin, Shuai Zhang and Hang Bian
Natural gas hydrates are a strategic energy resource in China. The China Geological Survey has discovered segregated hydrate mass formations under the seepage mechanism in the South China Sea through exploration, and gas hydrates occur in nodular, massiv...
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Claudio Argentino, Stefano Conti, Chiara Fioroni and Daniela Fontana
The occurrence of seep-carbonates associated with shallow gas hydrates is increasingly documented in modern continental margins but in fossil sediments the recognition of gas hydrates is still challenging for the lack of unequivocal proxies. Here, we com...
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Kristine Horvat, Prasad Kerkar, Keith Jones and Devinder Mahajan
Sequestration of carbon dioxide (CO2) in the form of its hydrates in natural methane (CH4) hydrate reservoirs, via CO2/CH4 exchange, is an attractive pathway that also yields valuable CH4 gas as prod...
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Roberto Clairmont, Heather Bedle, Kurt Marfurt and Yichuan Wang
Identifying gas hydrates in the oceanic subsurface using seismic reflection data supported by the presence of a bottom simulating reflector (BSR) is not an easy task, given the wide range of geophysical methods that have been applied to do so. Though the...
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Judith M. Schicks, Erik Spangenberg, Ronny Giese, Bernd Steinhauer, Jens Klump and Manja Luzi
The presence of natural gas hydrates at all active and passive continental margins has been proven. Their global occurrence as well as the fact that huge amounts of methane and other lighter hydrocarbons are stored in natural gas hydrates has led to the ...
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Evgeny Chuvilin, Valentina Ekimova, Boris Bukhanov, Sergey Grebenkin, Natalia Shakhova and Igor Semiletov
Destabilization of intrapermafrost gas hydrate is one possible reason for methane emission on the Arctic shelf. The formation of these intrapermafrost gas hydrates could occur almost simultaneously with the permafrost sediments due to the occurrence of a...
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Margarita Zyrianova, Timothy Collett and Ray Boswell
One of the most studied permafrost-associated gas hydrate accumulations in Arctic Alaska is the Eileen Gas Hydrate Trend. This study provides a detailed re-examination of the Eileen Gas Hydrate Trend with a focus on the gas hydrate accumulation in the we...
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Yufa He, Benjian Song and Qingping Li
This research explores the geomechanical challenges associated with gas hydrate extraction in submarine slope zones, a setting posing a high risk of significant geological calamities. We investigate slope and wellbore deformations driven by hydrate decom...
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Zhifeng Wan, Junsheng Luo, Xiaolu Yang, Wei Zhang, Jinqiang Liang, Lihua Zuo and Yuefeng Sun
Mud volcanoes and other fluid seepage pathways usually transport sufficient gas for the formation of gas reservoirs and are beneficial to the accumulation of gas hydrate. On the other hand, the fluid thermal effects of mud volcanoes can constrain the occ...
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Jingsheng Lu, Decai Lin, Dongliang Li, Deqing Liang, Long Wen, Siting Wu, Yiqun Zhang, Yong He, Lingli Shi and Youming Xiong
Sand production and sand control studies in non-diagenetic reservoirs are the weak point in the conventional petroleum industry. However, natural gas hydrate (NGH) mainly exists in non-diagenetic strata, and sand production occurs during exploitation, wh...
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Inna Morgunova, Petr Semenov, Anna Kursheva, Ivan Litvinenko, Sergey Malyshev, Sergey Bukin, Oleg Khlystov, Olga Pavlova, Tamara Zemskaya and Alexey A. Krylov
This paper performs a detailed study of a wide set of organic-geochemical proxies in 15 sediment cores collected from the main basins of Lake Baikal (the northern, the central and the southern) where processes of focused fluid discharge were detected. A ...
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Ricardo León, Miguel Llorente and Carmen Julia Giménez-Moreno
Results can be used by policy makers and companies for planning seafloor activities. The susceptibility assessment and the analysis of its reliability can be applied in other regional works of geohazard assessment.
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Valentina Loganina, Kristina Sergeeva, Roman Fediuk, Sergey Klyuev, Nikolai Vatin and Yuriy Vasilev
Lime mixes are the primary material for restoration work in historic buildings. The research object of this study is modifying lime binders with specially synthesized calcium silicate hydrates (CSHs). This study aimed to improve lime render mixes? weathe...
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Leopold Lobkovsky
A seismogenic trigger mechanism is proposed to explain the abrupt climate warming phases in the Arctic as a result of strong mechanical disturbances in the marginal region of the Arctic lithosphere. Those disturbances might have been caused by great eart...
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Ziv Tayber, Aaron Meilijson, Zvi Ben-Avraham and Yizhaq Makovsky
To estimate the potential inventory of natural gas hydrates (NGH) in the Levant Basin, southeastern Mediterranean Sea, we correlated the gas hydrate stability zone (GHSZ), modeled with local thermodynamic parameters, with seismic indicators of gas. A com...
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Giulia Alessandrini, Umberta Tinivella, Michela Giustiniani, Iván de la Cruz Vargas-Cordero and Silvia Castellaro
In the last few years, interest in the offshore Chilean margin has increased rapidly due to the presence of gas hydrates. We have modelled the gas hydrate stability zone off Chilean shores (from 33° S to 46° S) using a steady state approach to evaluate t...
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Hussein Hoteit, Marwan Fahs and Mohamad Reza Soltanian
Depleted gas reservoirs are appealing targets for carbon dioxide (CO2" role="presentation">22
2
) sequestration because of their storage capacity, proven seal, reservoir characterization knowledge, existing infrastructure, and potential for enhanced gas ...
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Marcelo Ketzer, Daniel Praeg, Maria A.G. Pivel, Adolpho H. Augustin, Luiz F. Rodrigues, Adriano R. Viana and José A. Cupertino
Gas hydrate provinces occur in two sedimentary basins along Brazil?s continental margin: (1) The Rio Grande Cone in the southeast, and (2) the Amazon deep-sea fan in the equatorial region. The occurrence of gas hydrates in these depocenters was first det...
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Evgeny Chuvilin, Dinara Davletshina, Valentina Ekimova, Boris Bukhanov, Natalia Shakhova and Igor Semiletov
Destabilization of intrapermafrost gas hydrates is one of the possible mechanisms responsible for methane emission in the Arctic shelf. Intrapermafrost gas hydrates may be coeval to permafrost: they originated during regression and subsequent cooling and...
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