Comparison of kinetic and equilibrium reaction models insimulating gas hydrate behavior in porous media
In this study we compare the use of kinetic and equilibriumreaction models in the simulation of gas (methane) hydrate behavior inporous media. Our objective is to evaluate through numerical simulationthe importance of employing kinetic versus equilibrium reaction modelsfor predicting the response of...
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Lawrence Berkeley National Laboratory
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ftunivnotexas:info:ark/67531/metadc899560 2023-05-15T17:12:05+02:00 Comparison of kinetic and equilibrium reaction models insimulating gas hydrate behavior in porous media Kowalsky, Michael B. Moridis, George J. USDOE. Assistant Secretary for Fossil Energy.Gas 2006-11-29 Text http://digital.library.unt.edu/ark:/67531/metadc899560/ English eng Lawrence Berkeley National Laboratory rep-no: LBNL--61009 grantno: DE-AC02-05CH11231 osti: 923006 http://digital.library.unt.edu/ark:/67531/metadc899560/ ark: ark:/67531/metadc899560 Journal Name: Energy Conversion and Management; Journal Volume: 48; Journal Issue: 6; Related Information: Journal Publication Date: February 28,2007 Natural Gas Surface Area Gas Hydrates Dissociation Kinetics Depressurization Thermalstimulation Sensitivity Saturation 58 Kinetics Simulation Hydrates Methane Production Gas Hydrates Stimulation Depressurization Gas Hydrates Dissociation Kinetics Depressurization Thermalstimulation Stimuli Article 2006 ftunivnotexas 2016-10-01T22:12:19Z In this study we compare the use of kinetic and equilibriumreaction models in the simulation of gas (methane) hydrate behavior inporous media. Our objective is to evaluate through numerical simulationthe importance of employing kinetic versus equilibrium reaction modelsfor predicting the response of hydrate-bearing systems to externalstimuli, such as changes in pressure and temperature. Specifically, we(1) analyze and compare the responses simulated using both reactionmodels for natural gas production from hydrates in various settings andfor the case of depressurization in a hydrate-bearing core duringextraction; and (2) examine the sensitivity to factors such as initialhydrate saturation, hydrate reaction surface area, and numericaldiscretization. We find that for large-scale systems undergoing thermalstimulation and depressurization, the calculated responses for bothreaction models are remarkably similar, though some differences areobserved at early times. However, for modeling short-term processes, suchas the rapid recovery of a hydrate-bearing core, kinetic limitations canbe important, and neglecting them may lead to significantunder-prediction of recoverable hydrate. The use of the equilibriumreaction model often appears to be justified and preferred for simulatingthe behavior of gas hydrates, given that the computational demands forthe kinetic reaction model far exceed those for the equilibrium reactionmodel. Article in Journal/Newspaper Methane hydrate University of North Texas: UNT Digital Library |
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University of North Texas: UNT Digital Library |
op_collection_id |
ftunivnotexas |
language |
English |
topic |
Natural Gas Surface Area Gas Hydrates Dissociation Kinetics Depressurization Thermalstimulation Sensitivity Saturation 58 Kinetics Simulation Hydrates Methane Production Gas Hydrates Stimulation Depressurization Gas Hydrates Dissociation Kinetics Depressurization Thermalstimulation Stimuli |
spellingShingle |
Natural Gas Surface Area Gas Hydrates Dissociation Kinetics Depressurization Thermalstimulation Sensitivity Saturation 58 Kinetics Simulation Hydrates Methane Production Gas Hydrates Stimulation Depressurization Gas Hydrates Dissociation Kinetics Depressurization Thermalstimulation Stimuli Kowalsky, Michael B. Moridis, George J. Comparison of kinetic and equilibrium reaction models insimulating gas hydrate behavior in porous media |
topic_facet |
Natural Gas Surface Area Gas Hydrates Dissociation Kinetics Depressurization Thermalstimulation Sensitivity Saturation 58 Kinetics Simulation Hydrates Methane Production Gas Hydrates Stimulation Depressurization Gas Hydrates Dissociation Kinetics Depressurization Thermalstimulation Stimuli |
description |
In this study we compare the use of kinetic and equilibriumreaction models in the simulation of gas (methane) hydrate behavior inporous media. Our objective is to evaluate through numerical simulationthe importance of employing kinetic versus equilibrium reaction modelsfor predicting the response of hydrate-bearing systems to externalstimuli, such as changes in pressure and temperature. Specifically, we(1) analyze and compare the responses simulated using both reactionmodels for natural gas production from hydrates in various settings andfor the case of depressurization in a hydrate-bearing core duringextraction; and (2) examine the sensitivity to factors such as initialhydrate saturation, hydrate reaction surface area, and numericaldiscretization. We find that for large-scale systems undergoing thermalstimulation and depressurization, the calculated responses for bothreaction models are remarkably similar, though some differences areobserved at early times. However, for modeling short-term processes, suchas the rapid recovery of a hydrate-bearing core, kinetic limitations canbe important, and neglecting them may lead to significantunder-prediction of recoverable hydrate. The use of the equilibriumreaction model often appears to be justified and preferred for simulatingthe behavior of gas hydrates, given that the computational demands forthe kinetic reaction model far exceed those for the equilibrium reactionmodel. |
author2 |
USDOE. Assistant Secretary for Fossil Energy.Gas |
format |
Article in Journal/Newspaper |
author |
Kowalsky, Michael B. Moridis, George J. |
author_facet |
Kowalsky, Michael B. Moridis, George J. |
author_sort |
Kowalsky, Michael B. |
title |
Comparison of kinetic and equilibrium reaction models insimulating gas hydrate behavior in porous media |
title_short |
Comparison of kinetic and equilibrium reaction models insimulating gas hydrate behavior in porous media |
title_full |
Comparison of kinetic and equilibrium reaction models insimulating gas hydrate behavior in porous media |
title_fullStr |
Comparison of kinetic and equilibrium reaction models insimulating gas hydrate behavior in porous media |
title_full_unstemmed |
Comparison of kinetic and equilibrium reaction models insimulating gas hydrate behavior in porous media |
title_sort |
comparison of kinetic and equilibrium reaction models insimulating gas hydrate behavior in porous media |
publisher |
Lawrence Berkeley National Laboratory |
publishDate |
2006 |
url |
http://digital.library.unt.edu/ark:/67531/metadc899560/ |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Journal Name: Energy Conversion and Management; Journal Volume: 48; Journal Issue: 6; Related Information: Journal Publication Date: February 28,2007 |
op_relation |
rep-no: LBNL--61009 grantno: DE-AC02-05CH11231 osti: 923006 http://digital.library.unt.edu/ark:/67531/metadc899560/ ark: ark:/67531/metadc899560 |
_version_ |
1766068838326075392 |