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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  • Cite this

    Lin, Y. J., Biswal, S. L., He, P., Tavakkoli, M., Ji, S. Y., Chai, J., Goharzadeh, A., Vargas, F. M., & Fatt, Y. Y. (2015). Asphaltene Aggregation and Deposition in Porous Micromodel. In 2015 AIChE Annual Meeting Proceedings