title: Using magnetic resonance imaging to monitor CH4 hydrate formation and spontaneous conversion of CH4 hydrate to CO2 hydrate in porous media.
abstract: Magnetic resonance imaging was used to monitor and quantify methane hydrate formation and exchange in porous media. Conversion of methane hydrate to carbon dioxide hydrate, when exposed to liquid carbon dioxide at 8.27 MPa and approximately 4 degrees C, was experimentally demonstrated with MRI data and verified by mass balance calculations of consumed volumes of gases and liquids. No detectable dissociation of the hydrate was measured during the exchange process.
authors.affiliation: Green Country Petrophysics LLC, 15210 N 3960 Road, Dewey, OK 74029, USA. bernie.a.baldwin@contractor.conocophillips.com
authors.forename: Bernard A
authors.initials: BA
authors.lastname: Baldwin
authors.forename: Jim
authors.initials: J
authors.lastname: Stevens
authors.forename: James J
authors.initials: JJ
authors.lastname: Howard
authors.forename: Arne
authors.initials: A
authors.lastname: Graue
authors.forename: Bjorn
authors.initials: B
authors.lastname: Kvamme
authors.forename: Erick
authors.initials: E
authors.lastname: Aspenes
authors.forename: Geir
authors.initials: G
authors.lastname: Ersland
authors.forename: Jarle
authors.initials: J
authors.lastname: Husebø
authors.forename: David R
authors.initials: DR
authors.lastname: Zornes
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation* / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008697:Methane / Q000032:analysis / Q000737:chemistry*; D016062:Porosity; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D002245:Carbon Dioxide; D008697:Methane