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New in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions

In situ rheological measurements for clathrate hydrate slurries were performed using a high pressure rheometer to determine the effect of hydrate particles on the viscosity and transportability of these slurries. These measurements were conducted using a well-characterized model water-in-oil emulsio...

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Main Authors: Majid, Ahmad A. A., Wu, David T., Koh, Carolyn A.
Format: Article
Language:English
Published: American Chemical Society 2017
Subjects:
QD Chemistry
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/28983/1/New%20in%20situ%20measurements%20of%20the%20viscosity%20of%20gas%20.pdf
http://umpir.ump.edu.my/id/eprint/28983/
https://doi.org/10.1021/acs.langmuir.7b02642
https://doi.org/10.1021/acs.langmuir.7b02642
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spelling my.ump.umpir.289832022-08-19T08:21:09Z http://umpir.ump.edu.my/id/eprint/28983/ New in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions Majid, Ahmad A. A. Wu, David T. Koh, Carolyn A. QD Chemistry TP Chemical technology In situ rheological measurements for clathrate hydrate slurries were performed using a high pressure rheometer to determine the effect of hydrate particles on the viscosity and transportability of these slurries. These measurements were conducted using a well-characterized model water-in-oil emulsion (Delgado-Linares et al. Model Water in-Oil Emulsions for Gas Hydrate Studies in Oil Continuous Systems. Energy Fuels 2013, 27, 4564-4573). The emulsion consists of a model liquid hydrocarbon, water, and a surfactant mixture of sorbitane monooleate 80 (Span 80) and sodium di-2-ethylhexylsulfosuccinate (Aerosol OT, AOT). This emulsion was used as an analog to water-in-crude oil (w/o) emulsions and provides reproducible results. The flow properties of the model w/o emulsion prior to hydrate formation were investigated in terms of several parameters including water percentage, temperature and pressure. A general equation that describes the viscosity of the emulsion as a function of the aforementioned parameters was developed. This general equation was able to predict the viscosity of a saturated emulsion at various temperatures and water percentages to within ±13% error. The general equation was then used to analyze the effect of hydrate formation on the transportability of gas hydrate slurries. As for hydrate slurries investigation, measurements were performed using methane gas as the hydrate former and a straight vane impeller as a stirring system. Tests were conducted at constant temperature and pressure (1 °C and 1500 psig of methane) and water percentages ranging from 5 to 30 vol %. Results of this work were analyzed and presented in terms of relative values, i.e., viscosities of the slurries relative to the viscosities of the continuous phase at similar temperature and pressure. In this work, a correlation to predict the relative viscosity of a hydrate slurry at various hydrate volume fractions was developed. Analysis of the developed correlation showed that the model was able to predict the relative viscosity of a hydrate slurry to within ±17% error. American Chemical Society 2017-10-24 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/28983/1/New%20in%20situ%20measurements%20of%20the%20viscosity%20of%20gas%20.pdf Majid, Ahmad A. A. and Wu, David T. and Koh, Carolyn A. (2017) New in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions. Langmuir, 33 (42). pp. 11436-11445. ISSN 0743-7463 https://doi.org/10.1021/acs.langmuir.7b02642 https://doi.org/10.1021/acs.langmuir.7b02642
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic QD Chemistry
TP Chemical technology
spellingShingle QD Chemistry
TP Chemical technology
Majid, Ahmad A. A.
Wu, David T.
Koh, Carolyn A.
New in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions
description In situ rheological measurements for clathrate hydrate slurries were performed using a high pressure rheometer to determine the effect of hydrate particles on the viscosity and transportability of these slurries. These measurements were conducted using a well-characterized model water-in-oil emulsion (Delgado-Linares et al. Model Water in-Oil Emulsions for Gas Hydrate Studies in Oil Continuous Systems. Energy Fuels 2013, 27, 4564-4573). The emulsion consists of a model liquid hydrocarbon, water, and a surfactant mixture of sorbitane monooleate 80 (Span 80) and sodium di-2-ethylhexylsulfosuccinate (Aerosol OT, AOT). This emulsion was used as an analog to water-in-crude oil (w/o) emulsions and provides reproducible results. The flow properties of the model w/o emulsion prior to hydrate formation were investigated in terms of several parameters including water percentage, temperature and pressure. A general equation that describes the viscosity of the emulsion as a function of the aforementioned parameters was developed. This general equation was able to predict the viscosity of a saturated emulsion at various temperatures and water percentages to within ±13% error. The general equation was then used to analyze the effect of hydrate formation on the transportability of gas hydrate slurries. As for hydrate slurries investigation, measurements were performed using methane gas as the hydrate former and a straight vane impeller as a stirring system. Tests were conducted at constant temperature and pressure (1 °C and 1500 psig of methane) and water percentages ranging from 5 to 30 vol %. Results of this work were analyzed and presented in terms of relative values, i.e., viscosities of the slurries relative to the viscosities of the continuous phase at similar temperature and pressure. In this work, a correlation to predict the relative viscosity of a hydrate slurry at various hydrate volume fractions was developed. Analysis of the developed correlation showed that the model was able to predict the relative viscosity of a hydrate slurry to within ±17% error.
format Article
author Majid, Ahmad A. A.
Wu, David T.
Koh, Carolyn A.
author_facet Majid, Ahmad A. A.
Wu, David T.
Koh, Carolyn A.
author_sort Majid, Ahmad A. A.
title New in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions
title_short New in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions
title_full New in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions
title_fullStr New in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions
title_full_unstemmed New in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions
title_sort new in situ measurements of the viscosity of gas clathrate hydrate slurries formed from model water-in-oil emulsions
publisher American Chemical Society
publishDate 2017
url http://umpir.ump.edu.my/id/eprint/28983/1/New%20in%20situ%20measurements%20of%20the%20viscosity%20of%20gas%20.pdf
http://umpir.ump.edu.my/id/eprint/28983/
https://doi.org/10.1021/acs.langmuir.7b02642
https://doi.org/10.1021/acs.langmuir.7b02642
_version_ 1743107207074938880
score 13.211869

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