Browsing Academic by Subject "Gas hydrates"
Now showing items 1-18 of 18
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3D measurements of hydrate surface area during hydrate dissociation in porous media using dynamic 3D imaging
( Elsevier , 2020 , Article)A better understanding of the kinetics of hydrate dissociation is essential to reliably predict gas production potential from natural hydrate reservoirs. Most hydrate dissociation models assume hydrates to be a constant ... -
Application of various water soluble polymers in gas hydrate inhibition
( Elsevier Ltd , 2016 , Article Review)Formation of hydrates in gas transmission lines due to high pressures and low temperatures is a serious problem in the oil and gas industry with potential hazards and/or economic losses. Kinetic hydrate inhibitors are water ... -
Cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition
( Elsevier B.V. , 2018 , Article)In light of current concerns about environmental impact, ionic liquids have been tested in a number of industrial applications, including gas purification, lubrication, and catalysis. In this work, cost-effective ... -
Development of Green Inhibitors to Prevent Hydrates Formation, Protect Environment and Reduce Energy Cost in Oil and Gas Industry
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Gas hydrates are identified as ice-liked solid, crystalline compounds having polyhedral water cavities, where gas molecules get trapped during operation under high pressure and low temperature condition. These hydrates ... -
Doubly dual nature of ammonium-based ionic liquids for methane hydrates probed by rocking-rig assembly
( Royal Society of Chemistry , 2016 , Article)This work presents a systematic study of methane hydrate inhibition in the presence of five structurally variable ionic liquids (ILs) belonging to the ammonium family—viz., tetra-alkylammonium acetate (TMAA), choline ... -
Dynamic 3D imaging of gas hydrate kinetics using synchrotron computed tomography
( EDP Sciences , 2020 , Conference Paper)The availability of natural gas hydrates and the continuing increase in energy demand, motivated researchers to consider gas hydrates as a future source of energy. Fundamental understanding of hydrate dissociation kinetics ... -
Dynamic Imaging of Hydrate Specific Area Evolution during Xenon Hydrate Formation
( Qatar Univesrity Press , 2020 , Conference Paper)Gas hydrates are ice-like structures formed under high pressure and low temperature conditions. They are considered as a potential energy source due to their abundance and the increase in energy demand worldwide. A fundamental ... -
Effects of CH4-CO2 replacement in hydrate-bearing sediments on S-wave velocity and electrical resistivity
( Elsevier , 2020 , Article)CH4-CO2 replacement has been considered as a method for methane production from hydrate-bearing sediments to maintain sediment stability. Sediment stability has been studied at both the particle scale and mesoscale. However, ... -
Effects of soaking process on CH4-CO2 replacement efficiency for hydrate-bearing sediments
( Elsevier , 2021 , Article)CH4-CO2 replacement method has the advantages of sequestering carbon dioxide and sediment stability compared to other methods such as depressurization and thermal stimulation. However, the production efficiency using CH4-CO2 ... -
Experimental and DFT Approach on the Determination of Natural Gas Hydrate Equilibrium with the Use of Excess N2 and Choline Chloride Ionic Liquid as an Inhibitor
( American Chemical Society , 2016 , Article)This work presents the characterization of hydrate-forming conditions of a Qatari natural gas-type mixture, QNG-S1, obtained using two different experimental methods, namely, a benchtop reactor and a gas hydrate autoclave. ... -
Gas Hydrate Prevention and Flow Assurance by Using Mixtures of Ionic Liquids and Synergent Compounds: Combined Kinetics and Thermodynamic Approach
( American Chemical Society , 2016 , Article)The thermodynamic and kinetic hydrates inhibition effects of addition of synergents poly(ethylene oxide) (PEO) and vinyl caprolactum (VCAP) with ionic liquids 1-methyl-1-propylpyrrolidinium chloride [PMPy][Cl] and ... -
Gas hydrates inhibition via combined biomolecules and synergistic materials at wide process conditions
( Elsevier B.V. , 2017 , Article)The motive of this research to present a systematic study in context of implementation of gas hydrate inhibitors that are obtained via naturally occurring amino acids (L-Alanine, Glycine, L-Histidine, L-Phenylalanine and ... -
Hydrate surface area measurements during dissociation using dynamic 3d synchrotron computed tomography
( European Association of Geoscientists and Engineers, EAGE , 2019 , Conference Paper)Availability of natural hydrates and ongoing rise in demand for energy, motivated researchers to consider hydrates as a potential energy source. Prior to gas production operations from hydrate-bearing sediments, hydrate ... -
Investigation of the performance of biocompatible gas hydrate inhibitors via combined experimental and DFT methods
( Academic Press , 2017 , Article)In this work, three ionic liquids (ILs) from the bio-compatible family of choline cations attached to anions of varying hydrophobicity namely: choline acetate (ChOAc), choline bistriflamide (ChNtf2), and choline chloride ... -
Pore networks to characterize formation damage due to fines at varied confinement and sand shape
( European Association of Geoscientists and Engineers, EAGE , 2019 , Conference Paper)Carbon sequestration in geological formations is in demand for many applications, especially energy production from hydrates. During gas production in a sandy hydrate reservoir, two phase flow and changes in confinement ... -
Pore-scale mechanisms associated with permeability impairment in porous media: A micromodel study
( European Association of Geoscientists and Engineers, EAGE , 2019 , Conference Paper)Recently, researchers are attracted towards the gas production from hydrate bearing sediments considering its abundance in marine continental margins and persisting demand for alternate energy. Dissociation of hydrate into ... -
Probing the effect of various water fractions on methane (CH4) hydrate phase equilibria and hydrate inhibition performance of amino acid L-proline
( Elsevier B.V. , 2021 , Article)To develop an effective hydrate risk mitigation strategy for offshore flow assurance its essential to understand the effect of different water fractions on the rate of hydrate formation and study the effect of various water ... -
Protecting environment and assuring efficient energy transfer using ionic liquids
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)Gas hydrates are ice-like crystalline compounds that are formed when small gas molecules get trapped within the water molecules under high pressure and low-temperature conditions in oil and gas transmission lines. The ...