Magnetic resonance imaging for in-situ observation of the effect of depressurizing range and rate on methane hydrate dissociation

2016 ◽  
Vol 144 ◽  
pp. 135-143 ◽  
Author(s):  
Lunxiang Zhang ◽  
Jiafei Zhao ◽  
Hongsheng Dong ◽  
Yuechao Zhao ◽  
Yu Liu ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Methane Hydrate ◽  
In Situ Observation ◽  
Resonance Imaging ◽  
Hydrate Dissociation

scholarly journals Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3231
Author(s):  
Stian Almenningen ◽  
Per Fotland ◽  
Geir Ersland
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Methane Hydrate ◽  
Water Saturation ◽  
High Water ◽  
Growth Patterns ◽  
Resonance Imaging ◽  
Initial Water ◽  
Hydrate Dissociation ◽  
The Core

This paper reports formation and dissociation patterns of methane hydrate in sandstone. Magnetic resonance imaging spatially resolved hydrate growth patterns and liberation of water during dissociation. A stacked core set-up using Bentheim sandstone with dual water saturation was designed to investigate the effect of initial water saturation on hydrate phase transitions. The growth of methane hydrate (P = 8.3 MPa, T = 1–3 °C) was more prominent in high water saturation regions and resulted in a heterogeneous hydrate saturation controlled by the initial water distribution. The change in transverse relaxation time constant, T2, was spatially mapped during growth and showed different response depending on the initial water saturation. T2 decreased significantly during growth in high water saturation regions and remained unchanged during growth in low water saturation regions. Pressure depletion from one end of the core induced a hydrate dissociation front starting at the depletion side and moving through the core as production continued. The final saturation of water after hydrate dissociation was more uniform than the initial water saturation, demonstrating the significant redistribution of water that will take place during methane gas production from a hydrate reservoir.

In situ observation of hydrate growth habit in porous media using magnetic resonance imaging

2013 ◽  
Vol 101 (3) ◽  
pp. 36004 ◽  
Author(s):  
Yongchen Song ◽  
Kaihua Xue ◽  
Jiafei Zhao ◽  
Weihaur Lam ◽  
Chuanxiao Cheng ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Porous Media ◽  
Magnetic Resonance ◽  
Growth Habit ◽  
In Situ Observation ◽  
Resonance Imaging

Switchable 19F MRI polymer theranostics: towards in situ quantifiable drug release

2017 ◽  
Vol 8 (34) ◽  
pp. 5157-5166 ◽  
Author(s):  
A. V. Fuchs ◽  
A. P. Bapat ◽  
G. J. Cowin ◽  
K. J. Thurecht
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Hyperbranched Polymer ◽  
Relaxation Times ◽  
Mri Contrast Agent ◽  
Resonance Imaging ◽  
Mri Contrast ◽  
19F Mri ◽  
Magnetic Resonance Imaging Mri

A switchable polymeric 19F magnetic resonance imaging (MRI) contrast agent was synthesised whereby the transverse (T2) relaxation times increased as a therapeutic was released from a hyperbranched polymer (HBP) scaffold.

Validation of a Magnetic Resonance Imaging Based Method to Study Passive Knee Laxity: An In-situ Study

2021 ◽  
pp. 103733
Author(s):  
Jessica C. Kupper ◽  
Nazanin Sinaei ◽  
Lindsey Westover ◽  
Payam Zandiyeh ◽  
Janet L. Ronsky
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Knee Laxity ◽  
Resonance Imaging ◽  
In Situ Study

Robust In Situ Magnetic Resonance Imaging of Heterogeneous Catalytic Hydrogenation with and without Hyperpolarization

ChemCatChem ◽  
2018 ◽  
Author(s):  
Kirill Viktorovich Kovtunov ◽  
Dmitry Lebedev ◽  
Alexandra Svyatova ◽  
Ekaterina V. Pokochueva ◽  
Igor P. Prosvirin ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Catalytic Hydrogenation ◽  
Resonance Imaging ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic Hydrogenation
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