Results 81 to 90 of about 8,964 (222)
Asphaltene biotransformation for heavy oil upgradation
, 2021 Globally, the reserves of heavy crude oil are seven times more abundant than that of light crude, and yet, they are underutilized because of their high viscosity and density, which is largely due to the presence of large amounts of asphaltenes ...
Skiadas, Ioannis +13 more
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Mechanistic Investigation of Asphaltene Deposition
, 2016 Asphaltenes are the most polar molecules in crude oil and are responsible for a large number of deposition and fouling problems in the oil industry.
Krittin Binabdullah (3218685) +4 more
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Asphaltene biotransformation by a novel enzyme thiol peroxidase from Micrococcus sp. IITD107
Applied and Environmental MicrobiologyAsphaltenes are known to cause high density and viscosity in heavy crude oil. The gene for thiol peroxidase was found to be present in five members of the nine-membered bacterial consortium able to biotransform about 75% of asphaltenes.
Nidhi Patil, Preeti Srivastava
doaj +1 more source
Petroleum Science, 2019 Cubic equation-of-state solid models are one of the most widely used models to predict asphaltene precipitation behavior. Thermodynamic parameters are needed to model precipitation under different pressures and temperatures and are usually obtained ...
Aktham E. Shoukry +2 more
doaj +1 more source
Scientific ReportsLong-time contact of heavy crude oil with rock leads to an adsorption phenomenon, which causes the rock surface to become oil-wet and appears as a barrier to the fluid flow in the porous media.
Jaber Taheri-Shakib +4 more
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Deposition and removal studies of asphaltene from the glass surface [PDF]
, 2021 Asphaltene deposition in crude oil reservoirs and transportation lines affects the oil recovery and incurs additional operational costs. The current study discusses the removal of asphaltene from inorganic silica surfaces using hydrodynamic forces.
Rizvi, Syed Haider Abbas +3 more
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Research progress in molecular dynamics simulation of petroleum asphaltene deposition
Youqi dizhi yu caishouluAsphaltene deposition has become an urgent technical challenge in the petroleum industry. In the processes of oil production， transportation， and processing， the aggregation and deposition of asphaltene have a negative impact on fluidity and production ...
LIU Feng +8 more
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, 2020 Heavy oil and bitumen supply the vast majority of energy resources in Canada. Different methods can be implemented to produce oil from such unconventional resources.
Zhangxin Chen, Mohammadali Ahmadi
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Effect of Asphaltenes and Asphaltene Dispersants on Wax Precipitation and Treatment
Colloids and InterfacesA detailed understanding of the interactions between wax and asphaltenes with other components of crude oils and the effect of treatments with paraffin inhibitors (PIs) and asphaltene dispersants (ADs), with a focus on identifying specific structure-activity relationships, is necessary to develop effective flow assurance strategies.
M’barki, Oualid +2 more
openaire +2 more sources
Prediction of the Gas Injection Effect on the Asphaltene Phase Envelope
Oil & Gas Science and Technology, 2015 Asphaltene instability may occur when pressure, temperature and compositional variations affect the reservoir oil. Permeability reduction, wettability alteration, and plugging of wells and flow lines are the consequences of this phenomenon. Therefore, it
Bahrami Peyman +3 more
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