Potential impact on climate of the exploitation of methane hydrate deposits offshore |
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| Institution: | 1. Institute of Physical Chemistry, University of Innsbruck, 6020 Innsbruck, Austria;2. Fakultät Physik, Technische Universität Dortmund, 44221 Dortmund, Germany;1. GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, 24148 Kiel, Germany;2. Norwegian Geotechnical Institute (NGI), Oslo, Norway;1. The Key Laboratory of Gas Hydrate, Ministry of Natural Resources of the People’s Republic of China, Qingdao Institute of Marine Geology, Qingdao, 266071, China;2. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China;3. Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore;4. Department of Chemical Engineering, Indian Institute of Technology-Roorkee, 247667, India;1. Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India;2. Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune 411008, Maharashtra, India;3. Physical & Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, Maharashtra, India;4. GAIL (India) Limited, GAIL Bhavan, New Delhi 110066, New Delhi, India;1. Energy Process Research Institute, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohiraku, Sapporo, Hokkaido, 062-8517, Japan;2. Research Institute of Energy Frontier, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohiraku, Sapporo, Hokkaido, 062-8517, Japan;3. School of Earth, Energy and Environmental Engineering, Faculty of Engineering, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido, 090-8507, Japan;4. Department of Ocean Technology, Policy and Environment, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan |
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| Abstract: | Considerable attention has focussed on methane hydrates as a potential energy resource but much less on the potential environmental problems of exploiting these deposits. In fact, methane hydrate deposits represent a dynamic system formed as a result of the continuous migration of methane gas along fracture systems. Any exploitation of methane hydrates offshore will perforce take place in these unstable systems and could lead to the large-scale release of CH4 under unfavourable circumstances. However, most of this CH4 would be oxidized to CO2 within the water column under steady-state conditions. Only under exceptional circumstances would large-scale release of CH4 into the atmosphere take place. The impact of exploiting these deposits offshore on global climate may therefore be limited provided serious efforts are made to minimize environmental impacts. At present, prospects for the commercial exploitation of methane hydrates are in their infancy. Considerable ingenuity will be required to satisfy the requirements of safe operating conditions, mitigation of environmental hazards and commercial viability. The need to exercise caution before attempting to exploit these deposits is emphasized. |
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