Permeability of Hydrate-Bearing Sediment Formed from CO2-N2 Mixture

Molecular storage of ozone in a clathrate hydrate formed from an O3+O2+CO2 gas mixture.

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...

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...

Evaluation of Different CH4-CO2 Replacement Processes in Hydrate-Bearing Sediments by Measuring P-Wave Velocity

The replacement of methane with carbon dioxide in natural gas hydrate-bearing sediments is considered a promising technology for simultaneously recovering natural gas and entrapping CO2. During the CH4-CO2 replacement process, the variations of geophysical property of the hydrate reservoir need to be adequately known. Since the acoustic wave velocity is an important geophysical property, in thi...

Selective Carbon Dioxide Adsorption from N2- Ch4-co2 Mixture on Carbon Molecular Sieves

Cărbunii sită moleculară sunt adsorbanţi carbonici de o mare importanţă. Lucrarea prezintă rezultatele studiului privind prepararea cărbunilor sită moleculară şi modificarea tratamentului cu hidrocarburi care crachează. De asemenea se prezintă procesul de adsorbţie selectivă a dioxidului de carbon din amestecul N2-CH4-CO2 care se realizează într-un echipament special creat în acest scop, bazat ...