Maximum recoverable gas from hydrate bearing sediments by depressurization

Faulting of Gas-Hydrate-Bearing Marine Sediments — Contribution to Permeability

Extensive faulting is observed in sediments containing high concentrations of methane hydrate off the southeastern coast of the United States. Faults that break the sea floor show evidence of both extension and shortening; mud diapirs are also present. The zone of recent faulting apparently extends from the ocean floor down to the base of gas-hydrate stability. We infer that the faulting result...

Geomechanical Constitutive Modelling of Gas-hydrate- Bearing Sediments

In this work and in order to consider theoretically the effect of gas hydrates on the mechanical properties of their host sediments, hydrate fraction was introduced as a state variable in the framework of a Critical State model. For the proposed model, the process of de-structuration and softening of natural clay was considered as a proxy for the gas-hydrate-bearing-sediments behaviour. The dev...

Ultrasonic Velocities in Laboratory-formed Gas Hydrate-bearing Sediments

Gas Hydrates are widely distributed in the near surface at high latitudes and many ocean bottoms. Our laboratory measurements help calibrate the seismic and well log data that are used to ascertain the in situ distribution of hydrates. Ultrasonic velocities are measured in unconsolidated sand specimen under thermobaric conditions comparable to those found in shallow oceanic or permafrost region...

Fluid-Solid Coupling Numerical Simulation on Natural Gas Production from Hydrate Reservoirs by Depressurization

Controls on the Physical Properties of Gas-Hydrate-Bearing Sediments Because of the Interaction Between Gas Hydrate and Porous Media

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