Results 231 to 240 of about 23,867 (262)
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Energy & Fuels, 2019
The behaviors of an asphaltene model compound, N-(1-undecyldodecyl)-N′-(5-carboxylicpentyl)-perylene-3,4,9,10-tetracarboxylbisimide (C5PeC11), in the absence and presence of an asphaltene inhibitor...
B. Jiang +7 more
semanticscholar +1 more source
The behaviors of an asphaltene model compound, N-(1-undecyldodecyl)-N′-(5-carboxylicpentyl)-perylene-3,4,9,10-tetracarboxylbisimide (C5PeC11), in the absence and presence of an asphaltene inhibitor...
B. Jiang +7 more
semanticscholar +1 more source
, 2018
Asphaltene precipitation is a common phenomenon in the exploitation of crude oil and closely correlates with oil recovery, especially in CO2 flooding. In this work, employing molecular dynamics simulations, the asphaltene precipitation process in CO2 was
Timing Fang +6 more
semanticscholar +1 more source
Asphaltene precipitation is a common phenomenon in the exploitation of crude oil and closely correlates with oil recovery, especially in CO2 flooding. In this work, employing molecular dynamics simulations, the asphaltene precipitation process in CO2 was
Timing Fang +6 more
semanticscholar +1 more source
Energy & Fuels, 2019
Asphaltene-related flow assurance problems are prevalent in oil production processes and are at the heart of issues such as the plugging of pipelines, the damage of rock formations, and the stabilization of viscous water-in-oil emulsions. A comprehensive
Yu-Jiun Lin +6 more
semanticscholar +1 more source
Asphaltene-related flow assurance problems are prevalent in oil production processes and are at the heart of issues such as the plugging of pipelines, the damage of rock formations, and the stabilization of viscous water-in-oil emulsions. A comprehensive
Yu-Jiun Lin +6 more
semanticscholar +1 more source
Influence of Asphaltene Polarity on Crystallization and Gelation of Waxy Oils
, 2018We report for the first time the results from a systematic investigation of how asphaltenes of different polarity affect crystallization and gelation of waxy oils.
Yuzhuo Li +3 more
semanticscholar +1 more source
Petroleum science and technology, 2019
Asphaltene deposition is considered to be one of the most problems during oil productions. This work describes the effect of asphaltene precipitation and deposition on relative permeability of reservoir rock during water alternating gas (WAG) injection ...
Erfan Hosseini
semanticscholar +1 more source
Asphaltene deposition is considered to be one of the most problems during oil productions. This work describes the effect of asphaltene precipitation and deposition on relative permeability of reservoir rock during water alternating gas (WAG) injection ...
Erfan Hosseini
semanticscholar +1 more source
2017
Asphaltenes are the heaviest constituents of crude oil. The bottom of the bottom of the barrel is a complex mixture of macromolecules containing heteroatomic moieties. Although exhibiting high molecular weight, these molecules do not form a continuum as other hydrocarbon classes do.
openaire +2 more sources
Asphaltenes are the heaviest constituents of crude oil. The bottom of the bottom of the barrel is a complex mixture of macromolecules containing heteroatomic moieties. Although exhibiting high molecular weight, these molecules do not form a continuum as other hydrocarbon classes do.
openaire +2 more sources
The Role of Asphaltene Solubility and Chemical Composition on Asphaltene Aggregation
Petroleum Science and Technology, 2003Abstract Asphaltenes from four different crude oils (Arab Heavy, B6, Canadon Seco, and Hondo) were fractionated in mixtures of heptane and toluene and analyzed by small angle neutron scattering (SANS). Fractionation appeared to concentrate the most polar species into the least soluble sub-fraction as indicated by elemental analysis.
Keith L. Gawrys +2 more
openaire +2 more sources
Energy & Fuels, 2019
Thermodynamic modeling is conducted for a high-asphaltene, high-resin crude oil produced from a deepwater reservoir using the perturbed-chain statistical associating fluid theory (PC-SAFT).
Mohammed I. L. Abutaqiya +3 more
semanticscholar +1 more source
Thermodynamic modeling is conducted for a high-asphaltene, high-resin crude oil produced from a deepwater reservoir using the perturbed-chain statistical associating fluid theory (PC-SAFT).
Mohammed I. L. Abutaqiya +3 more
semanticscholar +1 more source
Dynamic Asphaltene-Stearic Acid Competition at the Oil-Water Interface.
Langmuir, 2018Interfacial tension (IFT) is one of the major parameters which govern the fluid flow in oil production and recovery. This paper investigates the interfacial activity of different natural surfactants found in crude oil.
B. Sauerer +4 more
semanticscholar +1 more source
1964
High-quality roofing asphalts are found to contain high-molecular-weight asphaltenes which exhibit a high tolerance for saturates and have a low carbon-to-hydrogen (C/H) ratio. These asphaltenes are believed to possess a few long, paraffinic side chains rather than many short chains or naphthenic groups. Evidence supporting this hypothesis was provided
T. Deahl, J. Illman
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High-quality roofing asphalts are found to contain high-molecular-weight asphaltenes which exhibit a high tolerance for saturates and have a low carbon-to-hydrogen (C/H) ratio. These asphaltenes are believed to possess a few long, paraffinic side chains rather than many short chains or naphthenic groups. Evidence supporting this hypothesis was provided
T. Deahl, J. Illman
openaire +2 more sources