Enhanced CH 4 recovery and CO 2 storage via thermal stimulation in the CH 4 /CO 2 replacement of methane hydrate

Experimental study of growth kinetics of CO2 hydrates and multiphase flow properties of slurries in high pressure flow systems

“…Gas hydrates, also known as cage hydrates, are a kind of nonstoichiometric compound formed by gas and water molecules. 1,2 Based on the unique physical and chemical properties of hydrates, a series of hydrate application technologies have been developed, involving the comprehensive utilization of water resources, 3,4 capture and storage of greenhouse gas CO 2 , 5 mining CH 4 via CO 2 replacement, 6 hydrate storage and transportation technology, 7 separation of mixed gas by hydrate method, 8 and many other elds, which greatly improve human life. On the other hand, with the extraction of oil and gas resources gradually moving toward deep sea areas, deep sea oil and gas pipelines usually face low-temperature and highpressure environment, which provides favorable conditions for hydrate formation in pipelines.…”

An investigation on gas hydrate formation and slurry viscosity in the presence of wax crystals

“…Gas hydrates have been paid wide attention in the academic field, as one of new type energy resources with high energy density and huge amount, as one of CO 2 capture methods, as one of phase change materials for refrigeration application, as one of natural gas transportation modes, and also as one of the major risks in petroleum transportation systems . For the flow assurance researches in deep water offshore fields, hydrate will form in pipelines and then grow into a plug in the extreme environment of high pressure and low temperature, while some other solid phases such as wax, scale, and asphaltene will also precipitate .…”

Hydrates of Binary Guest Mixtures: Fugacity Model Development and Experimental Validation

“…The rate of formation of hydrate can be increased or decreased by the addition of different chemicals which can act as inhibitor [14,15] or promoter during the formation of hydrates [16]. A wide variety of methods have been introduced for the recovery of natural gas from gas hydrates, including depressurization, inhibitor injection, thermal stimulation, CO 2 sequestration [17], and CO 2 -CH 4 exchange [18,13]. Hence, hydrates have emerged as a major area of research all over the world.…”