Overview of the R&amp;#x00026;D program for an environmental impact assessment of methane hydrate exploitation in Japan

Arata, Nao; Sukizaki, Shunji; Awashima, Y.; Ogisako, Eiji; Okada, Yo

doi:10.1109/oceans.2008.5151883

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“…To address these potential environmental problems during hydrate reservoir exploitation, 4 research directions have been proposed by JOGMEC [218]: 1. To enhance the understanding of the geological formations and marine environment.…”

Section: Evaluation Of Environmental Impactmentioning

confidence: 99%

Review of natural gas hydrates as an energy resource: Prospects and challenges

et al. 2016

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Section: Evaluation Of Environmental Impactmentioning

confidence: 99%

Review of natural gas hydrates as an energy resource: Prospects and challenges

et al. 2016

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“…They are important due to the very large amounts of methane they contain [4,5]. By 1999 Japan had already started very significant efforts to produce gas from land and oceanic deposits [6].…”

Section: Introductionmentioning

confidence: 99%

Energy Return on Energy Invested (EROI) for the Electrical Heating of Methane Hydrate Reservoirs

Callarotti

2011

Sustainability

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Abstract： We model the low frequency electrical heating of submarine methane hydrate deposits located at depths between 1000 and 1500 m, and determine the energy return on energy invested (EROI) for this process. By means of the enthalpy method, we calculate the time-dependent heating of these deposits under applied electrical power supplied to a cylindrical heater located at the center of the reservoir and at variable depths. The conversion of the produced water to steam is avoided by limiting the heater temperature. We calculate the volume of methane hydrate that will melt and the energy equivalent of the gas thus generated. The partial energy efficiency of this heating process is obtained as the ratio of the gas equivalent energy to the applied electrical energy. We obtain EROI values in the range of 4 to 5, depending on the location of the heater. If the methane gas is used to generate the electrical energy required in the heating (in processes with a 33% efficiency), the effective EROI of the process falls in the range of 4/3 to 5/3.

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Overview of the R&D program for an environmental impact assessment of methane hydrate exploitation in Japan

Cited by 2 publications

References 4 publications

Review of natural gas hydrates as an energy resource: Prospects and challenges

Review of natural gas hydrates as an energy resource: Prospects and challenges

Energy Return on Energy Invested (EROI) for the Electrical Heating of Methane Hydrate Reservoirs

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