Asphaltene Precipitation and the Influence of Dispersants and Inhibitors on Morphology Probed by AFM
نویسندگان
چکیده
Bridging the gap between laboratory-scale experiments and actual oilfield operations is a complex task that requires compromise real (authentic) fluids model systems. Commercial products (i.e., asphaltene inhibitors dispersants) are often designed to target wide range of operating conditions compositions crude oils, which means performance becomes almost case-specific. Through Atomic Force Microscopy (AFM) imaging Transmission/Backscattering signals (T/BS), morphology deposits mechanisms eventually lead precipitated material were evaluated. Two different models (starting solutions) with four n-alkanes used induce variability in agglomeration subsequent precipitation paths. It was found increasing carbon number shifted observed detection time (T/BS data suggested shift order ~1000 s when comparing low high numbers) influences density under static sufficiently concentration solvent conditions. Further analysis on resulting after addition commonly chemicals showed stability through inhibition blockage or crowding potential active sites) led smaller complexes. One additives (PIBSA) reduced average height ~33% mean square roughness ~72%. On other hand, dispersion hindering agglomeration) leads polymer-like network bigger size, noting both cases system remains soluble. The use APR resulted an increase ~41% ~54% for same parameters. This insight sheds light how devise efficient chemical strategies prevent flow assurance issues.
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ژورنال
عنوان ژورنال: Colloids and interfaces
سال: 2023
ISSN: ['2504-5377']
DOI: https://doi.org/10.3390/colloids7010003