title: A rapid method for the measurement and estimation of CO2 diffusivity in liquid hydrocarbon-saturated porous media using MRI.
abstract: In this study, magnetic resonance imaging (MRI) was used to dynamically visualize the diffusion process of CO2 in porous media saturated with liquid hydrocarbon. Based on the assumption of semi-infinite media, effective CO2 diffusivity was obtained directly by the nonlinear fitting of one MR profile during the diffusion process. These experimental findings obtained based on MRI method showed a close agreement with the conventional pressure-volume-temperature method. The novel MRI-based technique is a time-saving approach that can reduce the duration of CO2 diffusivity measurement more than 90%, and realize rapid and accurate measurement and estimation of CO2 diffusivity.
authors.affiliation: Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning Province, 116024, China.
authors.forename: Yuechao
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning Province, 116024, China. Electronic address: jindanch@163.com.
authors.forename: Junlin
authors.initials: J
authors.lastname: Chen
authors.affiliation: Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning Province, 116024, China.
authors.forename: Mingjun
authors.initials: M
authors.lastname: Yang
authors.affiliation: Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning Province, 116024, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning Province, 116024, China. Electronic address: songyc@dlut.edu.cn.
authors.forename: Yongchen
authors.initials: Y
authors.lastname: Song
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis*; D004058:Diffusion; D006838:Hydrocarbons / Q000032:analysis*; D008279:Magnetic Resonance Imaging / Q000295:instrumentation; D016062:Porosity; D011312:Pressure; D013696:Temperature
chemical_list: D006838:Hydrocarbons; D002245:Carbon Dioxide
keywords: CO(2); Diffusivity; Magnetic resonance imaging; Porous media