Asphaltene Aggregation and Deposition in Porous Micromodel

Yu Jiun Lin, Sibani Lisa Biswal, Peng He, Mohammad Tavakkoli, S. Y. Ji, John Chai, Afshin Goharzadeh, Francisco M. Vargas, Yap Yit Fatt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Asphaltene deposition is a common cause of flow assurance problems in wellbores and production equipment as well as near-wellbore regions in oil reservoirs. Therefore, understanding the mechanism by which asphaltenes deposit onto solid surfaces is highly desirable. Here we present our results for visualizing real time asphaltene deposition from model oil w/ and w/o commercial waxes (C18, C32) as well as dispersants (inhibitor X and Y from the Middle East, 4-hexyl-, 4-octyl-, and 4-dodecylphenol) using microfluidic devices. In particular, we consider porous-media micromodel designs to represent various flow conditions typical of that found in the near well-bore regions of oil flow processes. Deposition rate and patterns with micron-sized circular posts for 0.5 wt% model oil will be discussed with the properties of aggregates, including the radius of gyration and fractal dimensions. Also, four stages of deposition have been found and investigated in the pore scale and with qualitatively macroscopic total collector efficiency. A permeability reduction model is also proposed for this system. By understanding the nature and the mechanisms of asphaltene deposition, we increase our ability to design cost effective mitigation strategies that includes the development of a new generation of asphaltene deposition inhibitors and improved methods for prevention and treatment of this problem.
Original languageEnglish
Title of host publication2015 AIChE Annual Meeting Proceedings
ISBN (Electronic)9780816910946
Publication statusPublished - 2015
Event2015 American Institute of Chemical Engineers Annual Meeting - Salt Palace Convention Center, Salt Lake City, United States
Duration: 8 Nov 201513 Nov 2015
https://www.aiche.org/conferences/aiche-annual-meeting/2015 (Link to Conference Details)

Conference

Conference2015 American Institute of Chemical Engineers Annual Meeting
CountryUnited States
CitySalt Lake City
Period8/11/1513/11/15
Internet address

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Agglomeration
Collector efficiency
Asphaltenes
Petroleum reservoirs
Waxes
Fractal dimension
Deposition rates
Microfluidics
Porous materials
Deposits
Oils
Costs

Cite this

Lin, Y. J., Biswal, S. L., He, P., Tavakkoli, M., Ji, S. Y., Chai, J., ... Fatt, Y. Y. (2015). Asphaltene Aggregation and Deposition in Porous Micromodel. In 2015 AIChE Annual Meeting Proceedings
Lin, Yu Jiun ; Biswal, Sibani Lisa ; He, Peng ; Tavakkoli, Mohammad ; Ji, S. Y. ; Chai, John ; Goharzadeh, Afshin ; Vargas, Francisco M. ; Fatt, Yap Yit. / Asphaltene Aggregation and Deposition in Porous Micromodel. 2015 AIChE Annual Meeting Proceedings. 2015.
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title = "Asphaltene Aggregation and Deposition in Porous Micromodel",
abstract = "Asphaltene deposition is a common cause of flow assurance problems in wellbores and production equipment as well as near-wellbore regions in oil reservoirs. Therefore, understanding the mechanism by which asphaltenes deposit onto solid surfaces is highly desirable. Here we present our results for visualizing real time asphaltene deposition from model oil w/ and w/o commercial waxes (C18, C32) as well as dispersants (inhibitor X and Y from the Middle East, 4-hexyl-, 4-octyl-, and 4-dodecylphenol) using microfluidic devices. In particular, we consider porous-media micromodel designs to represent various flow conditions typical of that found in the near well-bore regions of oil flow processes. Deposition rate and patterns with micron-sized circular posts for 0.5 wt{\%} model oil will be discussed with the properties of aggregates, including the radius of gyration and fractal dimensions. Also, four stages of deposition have been found and investigated in the pore scale and with qualitatively macroscopic total collector efficiency. A permeability reduction model is also proposed for this system. By understanding the nature and the mechanisms of asphaltene deposition, we increase our ability to design cost effective mitigation strategies that includes the development of a new generation of asphaltene deposition inhibitors and improved methods for prevention and treatment of this problem.",
author = "Lin, {Yu Jiun} and Biswal, {Sibani Lisa} and Peng He and Mohammad Tavakkoli and Ji, {S. Y.} and John Chai and Afshin Goharzadeh and Vargas, {Francisco M.} and Fatt, {Yap Yit}",
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Lin, YJ, Biswal, SL, He, P, Tavakkoli, M, Ji, SY, Chai, J, Goharzadeh, A, Vargas, FM & Fatt, YY 2015, Asphaltene Aggregation and Deposition in Porous Micromodel. in 2015 AIChE Annual Meeting Proceedings. 2015 American Institute of Chemical Engineers Annual Meeting, Salt Lake City, United States, 8/11/15.

Asphaltene Aggregation and Deposition in Porous Micromodel. / Lin, Yu Jiun; Biswal, Sibani Lisa; He, Peng; Tavakkoli, Mohammad; Ji, S. Y.; Chai, John; Goharzadeh, Afshin; Vargas, Francisco M.; Fatt, Yap Yit.

2015 AIChE Annual Meeting Proceedings. 2015.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Asphaltene Aggregation and Deposition in Porous Micromodel

AU - Lin, Yu Jiun

AU - Biswal, Sibani Lisa

AU - He, Peng

AU - Tavakkoli, Mohammad

AU - Ji, S. Y.

AU - Chai, John

AU - Goharzadeh, Afshin

AU - Vargas, Francisco M.

AU - Fatt, Yap Yit

PY - 2015

Y1 - 2015

N2 - Asphaltene deposition is a common cause of flow assurance problems in wellbores and production equipment as well as near-wellbore regions in oil reservoirs. Therefore, understanding the mechanism by which asphaltenes deposit onto solid surfaces is highly desirable. Here we present our results for visualizing real time asphaltene deposition from model oil w/ and w/o commercial waxes (C18, C32) as well as dispersants (inhibitor X and Y from the Middle East, 4-hexyl-, 4-octyl-, and 4-dodecylphenol) using microfluidic devices. In particular, we consider porous-media micromodel designs to represent various flow conditions typical of that found in the near well-bore regions of oil flow processes. Deposition rate and patterns with micron-sized circular posts for 0.5 wt% model oil will be discussed with the properties of aggregates, including the radius of gyration and fractal dimensions. Also, four stages of deposition have been found and investigated in the pore scale and with qualitatively macroscopic total collector efficiency. A permeability reduction model is also proposed for this system. By understanding the nature and the mechanisms of asphaltene deposition, we increase our ability to design cost effective mitigation strategies that includes the development of a new generation of asphaltene deposition inhibitors and improved methods for prevention and treatment of this problem.

AB - Asphaltene deposition is a common cause of flow assurance problems in wellbores and production equipment as well as near-wellbore regions in oil reservoirs. Therefore, understanding the mechanism by which asphaltenes deposit onto solid surfaces is highly desirable. Here we present our results for visualizing real time asphaltene deposition from model oil w/ and w/o commercial waxes (C18, C32) as well as dispersants (inhibitor X and Y from the Middle East, 4-hexyl-, 4-octyl-, and 4-dodecylphenol) using microfluidic devices. In particular, we consider porous-media micromodel designs to represent various flow conditions typical of that found in the near well-bore regions of oil flow processes. Deposition rate and patterns with micron-sized circular posts for 0.5 wt% model oil will be discussed with the properties of aggregates, including the radius of gyration and fractal dimensions. Also, four stages of deposition have been found and investigated in the pore scale and with qualitatively macroscopic total collector efficiency. A permeability reduction model is also proposed for this system. By understanding the nature and the mechanisms of asphaltene deposition, we increase our ability to design cost effective mitigation strategies that includes the development of a new generation of asphaltene deposition inhibitors and improved methods for prevention and treatment of this problem.

UR - https://www.aiche.org/conferences/aiche-annual-meeting/2015/proceeding/paper/355f-asphaltene-aggregation-and-deposition-porous-micromodel

UR - https://www.aiche.org/resources/proceedings/aiche-annual-meeting/2015

M3 - Conference contribution

BT - 2015 AIChE Annual Meeting Proceedings

ER -

Lin YJ, Biswal SL, He P, Tavakkoli M, Ji SY, Chai J et al. Asphaltene Aggregation and Deposition in Porous Micromodel. In 2015 AIChE Annual Meeting Proceedings. 2015