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Energy & Fuels, 2022 It is well-known that asphaltenes are a polydisperse fraction present in crude oil with a broad distribution of sizes and molecular characteristics. However, in practice, asphaltenes are often treated both in the laboratory and in modeling work as a ...
Aisha T. Khaleel +3 more
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CFD modeling of asphaltene deposition rate from crude oil
Journal of Petroleum Science and Engineering, 2015 In this work, rate of asphaltene deposition from crude oil flowing under forced convection through a vertical pipe have been investigated using computational fluid dynamics (CFD).
Masoud Haghshenasfard, Kamel Hooman
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Asphaltene Deposition Simulator with Aggregation
Offshore Technology Conference, 2023Abstract Asphaltene stability, aggregation, and transport are coupled with hydraulic and heat transfer equations to predict the effects of asphaltene deposition in wellbores and pipelines. The model uses lab measurements to characterize the asphaltene in solution and develop a precipitation curve in a pre-processing step.
Khalid Mateen, Eric William Smith
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Hydrodynamic Perspective on Asphaltene Agglomeration and Deposition
Energy & Fuels, 2015In this work, we propose a detailed numerical model for asphaltene agglomeration and deposition, as induced by a resolved turbulent liquid carrier phase flow, in which transport, breakup, and re-entrainment are also taken into account. Asphaltene phase separation is represented by the appearance of adhesive primary particles, which bond upon collision ...
Schutte, K.C.J. +3 more
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Modeling of Asphaltene Deposition Kinetics
Energy & Fuels, 2020Any change in the crude oil system equilibrium causes asphaltene precipitation, aggregation, and finally deposition on rock or pipe surfaces.
Abdolrahman Poozesh +2 more
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Canadian International Petroleum Conference, 2000
Introduction Production of heavy oils and paraffinic crude reserves often results in the deposition of organic solids, typically waxes or asphaltenes. The organic deposits can reduce the productivity of the reservoir as well as foul piping and surface equipment.
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Introduction Production of heavy oils and paraffinic crude reserves often results in the deposition of organic solids, typically waxes or asphaltenes. The organic deposits can reduce the productivity of the reservoir as well as foul piping and surface equipment.
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Asphaltene Deposition in Production Facilities
SPE Production Engineering, 1990Summary Asphaltene deposition in the tubing and production facilities caused operational problems in the Ula reservoir. Laboratory and field studies were carried out to determine the point of asphaltene precipitation. Laboratory observations were made on the regimes of deposition as a function of decreasing pressure down to and below the
Ruksana Thawer +2 more
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Asphaltene Deposition: Development and Application of Polymeric Asphaltene Dispersants
SPE Annual Technical Conference and Exhibition, 1991ABSTRACT Asphaltene deposition has a significant detrimental effect on oilfield production. The key to effective treatment of asphaltene deposition is recognition of the problem. Asphaltenes can be identified and quantified using laboratory methods.
S. S. Schantz, W. K. Stephenson
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Solubility Characterization of Asphaltene Deposits
SPE International Symposium on Oilfield Chemistry, 2015Abstract In view of the great impact of asphaltene deposition in the petroleum industry, it is of paramount importance to estimate the tendency of crude oils and petroleum products towards precipitation as well as the potential amount of material that can precipitate. These are important parameters to consider in designing and monitoring
E. Rogel +4 more
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A Fundamental Study of Asphaltene Deposition
Energy & Fuels, 2013Asphaltenes are a solubility class of petroleum crude oil that can destabilize and deposit in both upstream and downstream processes. In this study, asphaltene deposits were generated in metal capillaries by heptane addition to crude oils, and it was found that deposition is caused by submicrometer asphaltene aggregates.
Michael P. Hoepfner +4 more
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