Results 151 to 160 of about 1,915 (207)
Nanostructured iron and nickel oxide aerogels revolutionizing asphaltene removal in hydrocarbon processing. [PDF]
Sci RepBabaei E +3 more
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Mechanistic Insights into Emulsion Destabilization by Electric Fields. [PDF]
LangmuirAlicke A, Jaensson NO, Vermant J.
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Study of Asphaltene Precipitation by Calorimetry
Energy & Fuels, 2007 Can calorimetry bring new input to the current understanding of asphaltene precipitation? In this work, two types of precipitation were studied by means of calorimetry: addition of n-heptane into asphaltene solutions and temperature/pressure variations on a recombined live oil.
Sylvain Verdier +5 more
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A Thermodynamic Model for the Prediction of Asphaltene Precipitation
Petroleum Science and Technology, 2004Asphaltene precipitation in reservoirs, wells, and facilities can have a severe and detrimental impact on the oil production. Due to the extreme chemical complexity of the asphaltene and crude oil and the lack of comprehensive experimental data, the modeling of asphaltene precipitation in crude oil remains as a challenging task.
James L. Du, Dan Zhang
exaly +2 more sources
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2016
Abstract The objective of this work was to investigate the effect of precipitating environment on asphaltene precipitation such as, precipitant (n-alkanes: C5, C7, C9, C12, C14), asphaltene concentration, and temperature. A combination of gravimetric and spectroscopic techniques was used for the detection and quantification of asphaltene ...
Zihao Yang, Meiqin Lin, Zhaoxia Dong
exaly +2 more sources
Abstract The objective of this work was to investigate the effect of precipitating environment on asphaltene precipitation such as, precipitant (n-alkanes: C5, C7, C9, C12, C14), asphaltene concentration, and temperature. A combination of gravimetric and spectroscopic techniques was used for the detection and quantification of asphaltene ...
Zihao Yang, Meiqin Lin, Zhaoxia Dong
exaly +2 more sources
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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Energy & Fuels, 2006
It is shown by sequential reprecipitation that both n-C5 and n-C7 Athabasca asphaltene contain significant amounts of precipitant solubles, comprising resins and low-molecular-weight asphaltene-like substances in about the same percentage amounts relative to the residual precipitated insoluble asphaltene.
Otto P. Strausz +4 more
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It is shown by sequential reprecipitation that both n-C5 and n-C7 Athabasca asphaltene contain significant amounts of precipitant solubles, comprising resins and low-molecular-weight asphaltene-like substances in about the same percentage amounts relative to the residual precipitated insoluble asphaltene.
Otto P. Strausz +4 more
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Role of Asphaltene Precipitation in VAPEX Process
Journal of Canadian Petroleum Technology, 2008Abstract VAPEX (vapour extraction) is an oil recovery process, in which heavy oil or bitumen is mobilized by injection of a low molecular weight hydrocarbon solvent and is drained by gravity to a horizontal production well. It has attracted considerable attention because of its potential applicability to problematic reservoirs and the ...
P. Haghighat, B.B. Maini
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Asphaltene Prediction and Prevention: A Strategy to Control Asphaltene Precipitation
SPE/PAPG Annual Technical Conference, 2012ABSTRACT Asphaltene Precipitation and Deposition is a serious problem which can reduce the oil recovery by reducing reservoir permeability and altering the wettability. It can plug wells and flow lines through deposition and also cause separation difficulties at the separation facilities.
Muhammad Ali Buriro +1 more
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Effect of Asphaltene Concentration on the Aggregation and Precipitation Tendency of Asphaltenes
Energy & Fuels, 2014Destabilized asphaltenes can easily adhere to the oil well production equipment, the transportation pipelines, and also the refining and storage facilities, resulting in significant remediation costs. Therefore, it is of great importance to the energy industry to understand the factors that govern the kinetics of asphaltene aggregation and ...
Nasim Haji-Akbari +2 more
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