Results 161 to 170 of about 710,697 (204)
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Influence of asphaltene on wax deposition: Deposition inhibition and sloughing
Fuel, 2020Abstract Asphaltenes are the heaviest and most polar constituents of crude oils. The influences of asphaltene on wax deposition were investigated with model oils utilizing a Taylor-Couette device. The composition and rheological properties of the deposits and the chemical properties of the asphaltenes entrained in the deposits were analyzed.
Huiyuan Li +7 more
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The Asphaltene and Wax Deposition Envelopes
Fuel Science and Technology International, 1996ABSTRACT Asphaltene and wax phase behavior is quite different than the conventional “PVT” phase behavior. Asphaltenes exhibit a behavior at some thermodynamic states called flocculation. That is, asphaltene particles or micelles aggregate or flocculate into larger aggregates or flocs.
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Influence of Asphaltene Inhibitors on Wax and Asphaltene Deposition - Are Problems Associated?
Offshore Technology Conference Brasil, 2019Abstract Organic deposition formed at high temperatures in oil and gas production systems is commonly linked to instability of asphaltenes. Recent studies revealed that deposits collected in offshore production wells produced in Gulf of Mexico exhibited compositional variation pointing to a more complex fouling process than solely ...
Janaina I. S. Aguiar +2 more
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Microfluidic investigation of the deposition of asphaltenes in porous media
Lab Chip, 2014The deposition of asphaltenes in porous media, an important problem in science and macromolecular engineering, was for the first time investigated in a transparent packed-bed microreactor with online analytics that generated high-throughput information.
Chuntian, Hu +2 more
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Modeling of asphaltene deposition in a production tubing
AIChE Journal, 2011AbstractAsphaltene deposition phenomena are investigated both theoretically and experimentally. A Couette device, where the inner cylinder rotates and particles deposit on the outer wall, is used for deposition laboratory studies. A deposition modeling approach, recently proposed by the authors is improved.
D. Eskin +3 more
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Asphaltene and asphaltene precipitation/deposition
2021Ali Ghamartale +3 more
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Modeling Asphaltene Deposition in Production Pipelines
Energy & Fuels, 2006A multiphase (oil/gas/asphaltene/water) multicomponent hydrodynamic model is proposed to represent the phenomenon of asphaltene deposition in producing wells. The model is based on the assumption that asphaltene particles are thermodynamically formed at a given set of p−T−x conditions during the flow, and both molecular diffusion and shear removal are ...
E. Ramirez-Jaramillo +2 more
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New Correlation for Predicting Asphaltene Deposition
SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition, 2015Abstract Precipitation and deposition of hydrocarbon solids such as asphaltenes and wax are some of the major challenges facing the oil and gas processing and transportation industry. Deep-water, high pressure and high temperature (HPHT) environment are currently being explored for meeting the ever increasing energy demand and operating ...
A. A. Sulaimon, K. Govindasamy
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