Results 51 to 60 of about 745 (180)

Asphaltene Deposition Modeling during Natural Depletion and Developing a New Method for Multiphase Flash Calculation [PDF]

Iranian Journal of Oil & Gas Science and Technology, 2016
The specific objective of this paper is to develop a fully implicit compositional simulator for modeling asphaltene deposition during natural depletion.
Gholamreza Fallahnejad, Riyaz Kharrat
doaj   +1 more source

Modeling of asphaltene precipitation - part I: comparative study for asphaltene precipitation envelope prediction methods

Iraqi Journal of Chemical and Petroleum Engineering
   The solubility of asphaltenes in crude oils is predominantly influenced by variations in temperature, pressure, and oil composition. These alterations can precipitate asphaltene deposition, resulting in diminished permeability, obstruction of wells and auxiliary surface facilities, and ultimately, a reduction or cessation of production.
Ali A. Ali, Ghassan Hameed Abdul-Majeed, Abdalellah O. Mohmmed   +2 more
openaire   +2 more sources

Screening and Identification of Diesel Biodegrading Bacteria Isolated From Petroleum Hydrocarbon Contaminated Garage Soils of Kericho County, Kenya

International Journal of Microbiology, Volume 2026, Issue 1, 2026.
Despite the benefits of petroleum hydrocarbon as essential raw energy sources in many industries, they cause major global environmental pollution. Petroleum hydrocarbons pollutants are highly toxic and recalcitrant, making them dangerous and persistent over long periods in an ecosystem.
Zeddy Yegon, John M. Wagacha, Evans Nyaboga, Richard Chalo, Eliud Wafula, Diriba Muleta   +5 more
wiley   +1 more source

Modeling of asphaltene and wax precipitation [PDF]

, 1991
This research project was designed to focus on the development of a predictive technique for organic deposition during gas injection for petroleum EOR. A thermodynamic model has been developed to describe the effects of temperature, pressure, and composition on asphaltene precipitation.
Chung, F., Sarathi, P., Jones, R.
openaire   +2 more sources

Influence of Geological Factors on Asphaltene Precipitation From Crude Oils in Tuoputai Area, Tarim Basin, Northwestern China

Journal of GeoEnergy, Volume 2026, Issue 1, 2026.
Asphaltene precipitation frequently occurs in oil wells within the Tuoputai area of the Tarim Basin, significantly hindering production efficiency. In addition to external factors, such as temperature and pressure, the effects of geological factors on asphaltene precipitation warrant further investigation.
Ruiming Zhao, Honglei Xie, Ziyi Zhang, Xia Wang, Jiqian Wang, Jinqiang Tian, Dongjun Song   +6 more
wiley   +1 more source

Development of Graphene Oxide@Hyperbranched Polyglycerol Nanofluids for Application in Enhanced Oil Recovery

Journal of Applied Polymer Science, Volume 142, Issue 45, December 5, 2025.
Schematic representation of graphene oxide (GO) nanofluid functionalization with surfactants or hyperbranched polyglycerol (HPG) for enhanced oil recovery (EOR). The diagram highlights: (1) wettability alteration in limestone and sandstone reservoirs; (2) nanofluid injection into porous media; (3) atomic force microscopy (AFM) characterization of oil ...
Kelly C. B. Maia, Agatha Densy dos S. Francisco, Arley Sena do Nascimento, Giulia C. da Cruz, Felipe A. M. M. Macedo, Cesar Raitz, Daniel Grasseschi   +6 more
wiley   +1 more source

Experimental investigation of surface activity, micellization behaviour, and enhanced oil recovery performance of saponin‐based green surfactants

The Canadian Journal of Chemical Engineering, Volume 103, Issue 12, Page 5875-5894, December 2025.
This graphical abstract illustrates the steps carried out in the laboratory study, including saponin modification and characterization, surface tension, interfacial tension, contact angle, adsorption, and surfactant injection tests. Abstract In this study, three forms of saponin surfactants extracted from the Camellia sinensis plant (CS1, CS2, and CS3)
Iman Nowrouzi, Amir H. Mohammadi, Abbas Khaksar Manshad   +2 more
wiley   +1 more source

Determination of the Weight Percent of Aromatic Compounds in a Heavy Fuel Oil by Using Flash Chromatography and Solid‐phase Extraction Coupled With High‐Temperature Two‐Dimensional Gas Chromatography and Electron Ionization Time‐of‐Flight High‐Resolution Mass Spectrometry

Journal of Separation Science, Volume 48, Issue 12, December 2025.
ABSTRACT A chromatography/mass spectrometry method is presented for the determination of the weight percent of aromatic compounds in a heavy marine fuel oil. This information facilitates the estimation of the stability, engine performance, and environmental as well as health‐related consequences related to heavy fuel oils.
Kawthar Z. Alzarieni, Wan Tang Jeff Zhang, Brent Modereger, Wanru Li, Gozdem Kilaz, Hilkka I. Kenttämaa   +5 more
wiley   +1 more source

Synthesis and Mechanistic Study of a Copolymer Demulsifier for Dehydration of Water‐in‐Oil Emulsion of Crude Oil

ChemistryOpen, Volume 14, Issue 11, November 2025.
P(AM‐EHMA‐VBS‐VP), a novel polymeric demulsifier, adsorbs at the interface, reduces interfacial modulus, overcomes asphaltene‐inhibited coalescence, and promotes droplet coalescence for effective demulsification. This study presents the synthesis and characterization of a novel polymeric demulsifier, P(AM‐EHMA‐VBS‐VP), through emulsion polymerization ...
Xuezhi Li, Bin Ma, Liming Fu, Jing Bai, Qingbing Zhang, Baolu Yu   +5 more
wiley   +1 more source

Density, viscosity, and stability of products from combinations of visbreaking and deasphalting

The Canadian Journal of Chemical Engineering, Volume 103, Issue 10, Page 4694-4707, October 2025.
Abstract Transporting bitumen through pipelines in Western Canada is cost intensive because the oil has to be diluted with light solvents to meet pipeline specifications. The diluent requirement can be reduced by visbreaking (VIS) and solvent deasphalting (SDA), each of which decrease the viscosity and density of the oil.
Jose Beleno, Florian F. Schoeggl, Darius Remesat, Harvey W. Yarranton   +3 more
wiley   +1 more source