Results 171 to 180 of about 1,571 (217)
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Asphaltene Deposition in Capillary Flow
SPE Annual Technical Conference and Exhibition, 2013Abstract Asphaltene precipitation and deposition may cause severe problems during production, transportation and processing of crude oil, hence affecting efficiency and cost of production in both upstream and downstream operations. During crude oil production they can deposit in rock reservoir pores, thus leading to possible blocking and
Christine Maria Seifried +3 more
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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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Asphaltene Deposition Forecasting Methods
Advanced Materials Research, 2012Asphaltene deposition problems occurred in many oil fields in worldwide, which maybe block up wellbore, damage the permeability of reservoir and decline oil productivity. There are many factors to result asphalthene deposition problems, which contain crude component, pressure, temperature and so on.
Yan Xing Zhang, Xiang Fang Li, Jia Li
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On the Development of an Asphaltene Deposition Simulator
Energy & Fuels, 2010The potential problem of asphaltene deposition during oil production has motivated the development of several experimental techniques and theoretical models to understand and predict asphaltene behavior. Although important progress has been made in this area, prediction of the rate of asphaltene deposition remains an unsolved problem.
Francisco M. Vargas +2 more
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Controlling Asphaltene Deposition in Ageing Wells
SPE International Conference on Oilfield Chemistry, 2023Abstract ADNOC Onshore produces asphaltene-unstable crudes subject to severe wellbore deposition, which is exacerbated by miscible WAG injection. In one of the oilfields, commissioned in 1973 and producing approximately 400,000 BPD from 4 key reservoirs a cluster of approximately 20 wells experienced severe asphaltene deposition.
Mark Grutters +4 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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A Global Approach to Asphaltene Deposition Problems
International Symposium on Oilfield Chemistry, 1997Abstract Asphaltene deposition causes serious problems in production operations, from the reservoir, through production tubing, and in surface facilities. This work presents a systematic approach, preventive and corrective, taken at Intevep S.A to handle asphaltenes deposition problems at the different stages of crude oil production A ...
A. Izquierdo, O. Rivas
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