Indexed by:会议论文

Date of Publication:2010-06-06

Included Journals:EI、CPCI-S、Scopus

Volume:4

Page Number:711-715

Key Words:hydrate; formation; dissociation; MRI

Abstract:Tetrahydrofuran hydrate has long been used as a proxy of methane hydrate in laboratory studies. This paper investigates the formation and dissociation characters of tetrahydrofuran hydrate in porous media using the magnetic resonance imaging (MRI) technology. Various sized quartz glass beads are used to simulate the sediment. The formation and dissociation processes of THF hydrate are observed. The hydrate saturation during the formation is calculated based on the MRI data. The experimental result indicates that the third surface has an important effect on hydrate formation process. THF hydrate crystals begin to form on the glass beads and in their adjacent area as well as from the wall of the sample container. Furthermore, as the pore size increases, or the formation temperature decreases, the formation rate of THF hydrate gets faster. However; the dissociation rate is mostly dependent on the dissociation temperature rather than the pore size.