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  4. Simulation of methane recovery from gas hydrates combined with storing carbon dioxide as hydrates
 
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2011
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Titel

Simulation of methane recovery from gas hydrates combined with storing carbon dioxide as hydrates

Abstract
In the medium term, gas hydrate reservoirs in the subsea sediment are intended as deposits for carbon dioxide (CO2) from fossil fuel consumption. This idea is supported by the thermodynamics of CO2 and methane (CH4) hydrates and the fact that CO2 hydrates are more stable than CH4 hydrates in a certain P-T range. The potential of producing methane by depressurization and/or by injecting CO2 is numerically studied in the frame of the SUGAR project. Simulations are performed with the commercial code STARS from CMG and the newly developed code HyReS (hydrate reservoir simulator) especially designed for hydrate processing in the subsea sediment. HyReS is a nonisothermal multiphase Darcy flow model combined with thermodynamics and rate kinetics suitable for gas hydrate calculations. Two scenarios are considered: the depressurization of an area 1,000 m in diameter and a one/two-well scenario with CO2 injection. Realistic rates for injection and production are estimated, and limitations of these processes are discussed.
Author(s)
Janicki, Georg
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT
Schlüter, Stefan
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT
Hennig, Torsten
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT
Lyko, Hildegard
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT
Deerberg, Görge
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT
Zeitschrift
Journal of geological research
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DOI
10.1155/2011/462156
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Englisch
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  • gas hydrate

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