Lin, Yu-Jiun, He, Peng, Tavakkoli, Mohammad, Mathew, Nevin Thunduvila, Yap, Yit-Fatt, Chai, John, Goharzadeh, Ashfin, Vargas, F. M. and Biswal, S. L. (2016) Examining Asphaltene Solubility on Deposition in Model Porous Media. Langmuir, 32 (34). pp. 8729-8734. ISSN 0743-7463

Asphaltenes are known to cause severe flow
assurance problems in the near-wellbore region of oil reservoirs. Understanding the mechanism of asphaltene deposition in porous media is of great significance for the development of accurate numerical simulators and effective chemical remediation treatments. Here, we present a study of the dynamics of asphaltene deposition in porous media using microfluidic devices. A model oil containing 5 wt % dissolved asphaltenes was mixed with n-heptane, a known asphaltene
precipitant, and flowed through a representative porous media microfluidic chip. Asphaltene deposition was recorded and analyzed as a function of solubility, which was directly correlated to particle size and Péclet number. In particular, pore-scale visualization and velocity profiles, as well as three stages of deposition,
were identified and examined to determine the important convection−diffusion effects on deposition.

Microsoft Word - PaperRevision2.docx.pdf - Accepted Version

Download (7MB) | Preview


Downloads per month over past year

Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email