Results 61 to 70 of about 745 (180)

A new thermodynamic model for the prediction of asphaltene precipitation in crude oil [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2010
It has been proved that asphaltene precipitation is a difficult problem to define and study. Precipitation of these complex and heavy organic compounds can cause serious problems in crude oil production and transportation, residual oil processing and ...
Alireza Fazlali, Sayedmohsen Hosseini, Gholamreza Pazuki, Esmaeel Khosrobeigi   +3 more
doaj  

An experimental investigation of asphaltene stability in heavy crude oil during carbon dioxide injection

Journal of Petroleum Exploration and Production Technology, 2019
Carbon dioxide (CO2) injection is one of the most applied enhanced oil recovery methods in the hydrocarbon industry, since it has the potential to increase oil recovery significantly and can help reduce greenhouse gases through carbon storage in ...
Sherif Fakher, Mohamed Ahdaya, Mukhtar Elturki, Abdulmohsin Imqam   +3 more
doaj   +1 more source

Prediction of asphaltene precipitation using support vector regression tuned with genetic algorithms

Petroleum, 2016
Due to the severe and costly problems caused by asphaltene precipitation in petroleum industry, developing a quick and accurate model, to predict the asphaltene precipitation under different conditions, seems crucial.
Mohammad Ghorbani, Ghasem Zargar, Hooshang Jazayeri-Rad   +2 more
doaj   +1 more source

Correlation between Asphaltene Stability in n-Heptane and Crude Oil Composition Revealed with Chemical Imaging

Adsorption Science & Technology, 2014
Five crude oil samples with different physical properties have been studied with respect to asphaltene stability. The attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopic imaging approach of n-heptane-induced precipitation has ...
Anton A. Gabrienko, Velu Subramani, Oleg N. Martyanov, Sergei G. Kazarian   +3 more
doaj   +1 more source

Molecular thermodynamics for prevention of asphaltene precipitation [PDF]

, 1996
Crude petroleum is a complex mixture of compounds with different chemical structures and molecular weights. Asphaltenes, the heaviest and most polar fraction of crude oil, are insoluble in normal alkanes such as n-heptane, but they are soluble in aromatic solvents such as toluene.
Wu, Jianzhong, Prausnitz, J.M.
openaire   +2 more sources

Mitigating Asphaltene Deposition in CO₂ Flooding with Carbon Quantum Dots

Energies
Carbon capture, utilization, and storage (CCUS) technology has emerged as a pivotal measure in mitigating global climate change. Notably, CO2-EOR is esteemed for its dual function of sequestering CO2 and enhancing oil recovery.
Qi Liu, Yangwen Zhu, Hang Ye, Haiying Liao, Quanqi Dai, Michelle Tiong, Chenggang Xian, Dan Luo   +7 more
doaj   +1 more source

COMPARISON BETWEEN ASPHALTENES (SUB)FRACTIONS EXTRACTED FROM TWO DIFFERENT ASPHALTIC RESIDUES: CHEMICAL CHARACTERIZATION AND PHASE BEHAVIOR

Química Nova, 2016
Asphaltenes are blamed for various problems in the petroleum industry, especially formation of solid deposits and stabilization of water-in-oil emulsions.
Silas R. Ferreira, Fabio R. Barreira, Luciana S. Spinelli, Katia Z. Leal, Peter Seidl, Elizabete F. Lucas   +5 more
doaj   +1 more source

Quantification of Methane-Induced Asphaltene Precipitation in a Multiple Contact Process. [PDF]

ACS Omega, 2022
Zhang H, Liu Y, Han P, Wang S, Yan H, Guo P, Zhang J, Bai Z, Wang Z, Hukuang H, Li X.   +10 more
europepmc   +1 more source

Effect of Temperature on Asphaltene Precipitation in Crude Oils from Xinjiang Oilfield. [PDF]

ACS Omega, 2022
Li M, Tian Y, Wang C, Jiang C, Yang C, Zhang L.   +5 more
europepmc   +1 more source

ASFALTENOS, UN DAÑO SEVERO EN YACIMIENTOS ALTAMENTE SUBSATURADOS DE ACEITE VOLÁTIL

Revista Fuentes El Reventón Energético, 2011
Aphaltene organic precipitation and deposition is known as a severe problem at reservoir level, especially in high sub-saturated reservoirs, due to the asphaltic deposition is extended beyond wellbore.
Andrés Camilo Rincón Chavez, Laura Tatiana Cabrales Campo, Zuly Himelda Calderón Carrillo   +2 more
doaj