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Temporal variation of voids in waxy crude oil gel in the presence of temperature gradient

The formation of voids is eminent below the pour point temperature of waxy crude oil. This paper discusses the temporal variation of voids in waxy crude oil gel in the presence of temperature gradient between the waxy crude oil and its ambient condition. Cooling of waxy crude oil to an end temperatu...

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Main Authors: Chala, G.T., Sulaiman, S.A., Japper-Jaafar, A., Abdullah, W.A.K.W.
Format: Article
Published: Taylor and Francis Ltd. 2020
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071147183&doi=10.1080%2f00986445.2019.1655403&partnerID=40&md5=0f82c6a940d8ff09b3f596efd7b2d900
http://eprints.utp.edu.my/29908/
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spelling my.utp.eprints.299082022-03-25T03:14:16Z Temporal variation of voids in waxy crude oil gel in the presence of temperature gradient Chala, G.T. Sulaiman, S.A. Japper-Jaafar, A. Abdullah, W.A.K.W. The formation of voids is eminent below the pour point temperature of waxy crude oil. This paper discusses the temporal variation of voids in waxy crude oil gel in the presence of temperature gradient between the waxy crude oil and its ambient condition. Cooling of waxy crude oil to an end temperature of 10 °C was performed in a flow loop rig, after which it was scanned in a 3 T Magnetic Resonance Imaging (3 T-MRI) system. Five consecutive scans with equal intervals were taken and analyzed to observe the variation of voids over the waiting duration. It was observed that the percentage of total voids volume reduced from 7.16 to 6.09, from 6.59 to 5.71 near a pipe wall, and from 0.57 to 0.38 around a pipe core at waiting duration of 50 minutes. A waiting duration of 10 minutes reduced the voids volume around the pipe wall from 6.59 to 6.33, and this was the maximum when compared with observations at higher waiting durations. The rate of voids disappearance was also higher at shorter waiting durations, with a maximum of 0.032/min rate of change of voids observed at 10 minutes. Conversely, a minimum of 0.002/min rate of change of voids was observed at 40 minutes waiting duration, beyond which the difference was almost insignificant. The disappearance rates were small that the change in voids volume became minimal over longer waiting durations, showing insignificant voids variation with surrounding weather conditions. © 2019 Taylor & Francis Group, LLC. Taylor and Francis Ltd. 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071147183&doi=10.1080%2f00986445.2019.1655403&partnerID=40&md5=0f82c6a940d8ff09b3f596efd7b2d900 Chala, G.T. and Sulaiman, S.A. and Japper-Jaafar, A. and Abdullah, W.A.K.W. (2020) Temporal variation of voids in waxy crude oil gel in the presence of temperature gradient. Chemical Engineering Communications, 207 (10). pp. 1403-1414. http://eprints.utp.edu.my/29908/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The formation of voids is eminent below the pour point temperature of waxy crude oil. This paper discusses the temporal variation of voids in waxy crude oil gel in the presence of temperature gradient between the waxy crude oil and its ambient condition. Cooling of waxy crude oil to an end temperature of 10 °C was performed in a flow loop rig, after which it was scanned in a 3 T Magnetic Resonance Imaging (3 T-MRI) system. Five consecutive scans with equal intervals were taken and analyzed to observe the variation of voids over the waiting duration. It was observed that the percentage of total voids volume reduced from 7.16 to 6.09, from 6.59 to 5.71 near a pipe wall, and from 0.57 to 0.38 around a pipe core at waiting duration of 50 minutes. A waiting duration of 10 minutes reduced the voids volume around the pipe wall from 6.59 to 6.33, and this was the maximum when compared with observations at higher waiting durations. The rate of voids disappearance was also higher at shorter waiting durations, with a maximum of 0.032/min rate of change of voids observed at 10 minutes. Conversely, a minimum of 0.002/min rate of change of voids was observed at 40 minutes waiting duration, beyond which the difference was almost insignificant. The disappearance rates were small that the change in voids volume became minimal over longer waiting durations, showing insignificant voids variation with surrounding weather conditions. © 2019 Taylor & Francis Group, LLC.
format Article
author Chala, G.T.
Sulaiman, S.A.
Japper-Jaafar, A.
Abdullah, W.A.K.W.
spellingShingle Chala, G.T.
Sulaiman, S.A.
Japper-Jaafar, A.
Abdullah, W.A.K.W.
Temporal variation of voids in waxy crude oil gel in the presence of temperature gradient
author_facet Chala, G.T.
Sulaiman, S.A.
Japper-Jaafar, A.
Abdullah, W.A.K.W.
author_sort Chala, G.T.
title Temporal variation of voids in waxy crude oil gel in the presence of temperature gradient
title_short Temporal variation of voids in waxy crude oil gel in the presence of temperature gradient
title_full Temporal variation of voids in waxy crude oil gel in the presence of temperature gradient
title_fullStr Temporal variation of voids in waxy crude oil gel in the presence of temperature gradient
title_full_unstemmed Temporal variation of voids in waxy crude oil gel in the presence of temperature gradient
title_sort temporal variation of voids in waxy crude oil gel in the presence of temperature gradient
publisher Taylor and Francis Ltd.
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071147183&doi=10.1080%2f00986445.2019.1655403&partnerID=40&md5=0f82c6a940d8ff09b3f596efd7b2d900
http://eprints.utp.edu.my/29908/
_version_ 1738657032498577408
score 13.211869

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