Results 101 to 110 of about 23,014 (223)

Изменения структурных параметров молекул асфальтенов в зависимости от состава дисперсионной среды метанового типа [PDF]

, 2015
The changes in the structure of high-molecular compounds - asphaltenes, depending on the composition of the dispersion medium oil for model systems methane type are studied.
Бешагина, Евгения Владимировна, Можайская, М. В., Шаманаева, В. С.   +2 more
core  

Investigation of Asphaltene Stability in the Iranian Crude Oils [PDF]

Iranian Journal of Chemical Engineering, 2008
The influence of different factors on the asphaltene stability in three iranian crude oils was evaluated. Compositional studies and structural characterization of resins and asphaltenes were carried out in order to study a possible relationship between ...
doaj  

Exploring the Effect of Relaxation Time, Natural Surfactant, and Potential Determining Ions (Ca2+, Mg2+, and SO42−) on the Dynamic Interfacial Tension Behavior of Model Oil-Brine Systems

Heliyon
This study examined how the concentration of asphaltene and divalent ions in various salinities affects the interfacial tension (IFT) between a model oil/brine using the pendant drop method. The oleic phase consisted of a mixture of toluene and n-heptane
Amir Mohammadi, Mahsa Parhizgar Keradeh
doaj   +1 more source

A level-set method for convective–diffusive particle deposition [PDF]

, 2012
Chai, John, Vargas, F.M., Yap, Y.F.
core   +1 more source

A Solution Model for Predicting Asphaltene Precipitation [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2014
Formation of asphaltene deposition during oil production, processing and synthesis is known as a fundamental problem of petroleum reservoir worldwide. Asphaltene is a petroleum fraction that can lead to increasing the operating costs in these industries.
Mohammad Yazdizadeh, Hessamodin Nourbakhsh, Mohammad Reza Jafari Nasr   +2 more
doaj  

Investigating the Influence of n-Heptane versus n-Nonane upon the Extraction of Asphaltenes

, 2022
Latifa K. Alostad, Diana Catalina Palacio Lozano, Benedict Gannon, Rory P. Downham, Hugh E. Jones, Mark P. Barrow   +5 more
openalex   +1 more source

Research Progress in Nanoparticle Inhibitors for Crude Oil Asphaltene Deposition

Molecules
Currently, the alteration of external factors during crude oil extraction easily disrupts the thermodynamic equilibrium of asphaltene, resulting in the continuous flocculation and deposition of asphaltene molecules in crude oil.
Shuangchun Yang, Chenhui Yan, Jiatie Cai, Yi Pan, Qiuju Han   +4 more
doaj   +1 more source

Investigating the mechanism of interfacial tension reduction through the combination of low-salinity water and bacteria

Scientific Reports
In the enhanced oil recovery (EOR) process, interfacial tension (IFT) has become a crucial factor because of its impact on the recovery of residual oil.
Arastoo Abdi, Behnam Ranjbar, Yousef Kazemzadeh, Farzaneh Aram, Masoud Riazi   +4 more
doaj   +1 more source

Density Functional Theory Study of the Effects of Substituents on the Carbon-13 Nuclear Magnetic Resonance Chemical Shifts of Asphaltene Model Compounds

, 2014
Jackeline S. C. Oliveira, Leonardo Moreira da Costa, Stanislav R. Stoyanov, Peter Rudolf Seidl   +3 more
openalex   +2 more sources

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 ...
Ali A. Ali, Ghassan Hameed Abdul-Majeed, Abdalellah O. Mohmmed   +2 more
doaj   +1 more source