Results 21 to 30 of about 21,307 (276)

Asphaltene Precipitation Investigation Using a Screening Techniques for Crude Oil Sample from the Nahr-Umr Formation/Halfaya Oil Field

Iraqi Journal of Chemical and Petroleum Engineering, 2023
Many oil and gas processes, including oil recovery, oil transportation, and petroleum processing, are negatively impacted by the precipitation and deposition of asphaltene. Screening methods for determining the stability of asphaltenes in crude oil have
Moammed A. Ahmed, Ghassan H. Abdul-Majeed, Ali K. Alhuraishawy   +2 more
doaj   +1 more source

Molecular dynamics studies of interaction between asphaltenes and solvents [PDF]

Journal of Petroleum Science and Engineering, 156, pp.118-124 (2017), 2018
Understanding of the molecular interaction between asphaltenes and other molecules, which may act as its solvents, provides insights into the nature of its stability in petroleum fluids and its phase transitions. Molecular dynamics simulations were performed and reported here on systems consisting of a single asphaltene molecule and pure solvents ...
arxiv   +1 more source

Computer Simulation of Asphaltenes

Petroleum Chemistry, 2018
The review describes theoretical approaches based on computer simulations at various levels of details (from quantum chemical calculations to atomistic and coarse-grained models) to study asphaltenes and systems containing asphaltenes. The used methods are described, their advantages and disadvantages are discussed in terms of computational costs and ...
S. V. Lyulin, A. D. Glova, S. G. Falkovich, V. A. Ivanov, V. M. Nazarychev, A. V. Lyulin, S. V. Larin, S. V. Antonov, P. Ganan, J. M. Kenny   +9 more
openaire   +3 more sources

Determination of Asphaltene Critical Nanoaggregate Concentration Region Using Ultrasound Velocity Measurements [PDF]

Scientific Reports 7, 16125 (2017), 2017
Asphaltenes constitute the heaviest, most polar and aromatic fraction of petroleum crucial to the formation of highly-stable water- in-crude oil emulsions. The latter occur during crude oil production as well as spills and cause difficulties to efficient remediation practice.
arxiv   +1 more source

Demulsification mechanism of asphaltene-stabilized water-in-oil emulsions by a polymeric ethylene oxide-propylene oxide demulsifier [PDF]

, 2014
The demulsification mechanism of asphaltene-stabilized water-in-toluene emulsions by an ethylene-oxide-propylene oxide (EO-PO) based polymeric demulsifier was studied.
Abdel-Azim A., Ancheyta J., Andersen S. I., Angle C. W., Angle C. W., Aveyard R., Barnes T. J., Bosio V., Cadena-Nava R. D., Czarnecki J., Czarnecki J., David Harbottle, Dickinson E., Dimitrov A. N., Ekott E. J., Erica Pensini, Erni P., Erni P., Ese M.-H., Fan Y., Fan Y., Fan Yang, Feng X., Feng X., Feng X., Ferri J. K., Ferri J. K., Gao S., Harbottle D., Hou J., Hua Y., Ishpinder Kailey, Jacob Masliyah, Jacqueline Behles, Kailey I., Kailey I. K., Kim Y. H., Kotsmár C., Kupai M. M., Lobato M. D., McLean J. D., Mohammed R. A., Mohammed R. A., Mohammed R. A., Pensini E., Petkov J. T., Plamen Tchoukov, Ramakers R. R. M., Ramalho J. B., Robins M. M., Singh B. P., Speight J. G., Spiecker P. M., Stewart A. C., Sun H.-Q., Tchoukov P., Tchoukov P., Vieira J. B., Wang Y., Wu J., Wu J., Xu Y., Yan Z., Yang X., Yanru F., Zaki N., Zhang H., Zhang L. Y., Zhang L. Y., Zhang L. Y., Zhang Z., Zhenghe Xu, Zifu Li, Álvarez L.   +73 more
core   +1 more source

A Novel Method for Mitigation of Asphaltene Deposition in the Wellstring [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2010
Asphaltene precipitation and deposition is a serious problem in many Iranian fields. The deposited asphaltene results in partial or total blockage of the wellbore and wellstring reducing or completely seizing oil production.
Bahram Soltani Soulgani, Davood Rashtchian, Bahman Tohidi, Mohammad Jamialahmadi   +3 more
doaj  

Use of thermal and magnetic devices for prevention of asphaltene, resin, and wax deposits on oil equipment surfaces [PDF]

, 2019
Purpose. To substantiate the advantages of using a multi-level externally insulated complex of magneto-thermal dewaxing which is located in the oil well and improves production of the formation fluid with high content of asphaltene, resin, and wax ...
Manhura, A, Vynnykov, Yu, Zimin, O, Маtviienko, A   +3 more
core   +1 more source

Characterization of Asphaltene Deposition Behavior in Diluted Heavy Oil under High-Pressure Conditions

Energies, 2023
Some oil wells in the Tahe oilfield have been reported to produce extremely heavy oil due to asphaltene deposition. To enhance the flow of crude oil through the wellbore, engineers adopted the use of light oil from nearby wells to dissolve the heavy ...
Zuguo Yang, Xinpeng Wu, Jixiang Guo, Jianjun Zhang, Ruiying Xiong, Lei Liu, Wyclif Kiyingi   +6 more
doaj   +1 more source

Review of microscale dynamics of dilution-induced asphaltene precipitation under controlled mixing conditions [PDF]

arXiv, 2022
As the most complex and heaviest component in bitumen, asphaltene precipitation induced by solvent dilution is important in oil sands extraction to remove solids and water from bitumen froth through dilution by paraffinic solvents. This review will compare asphaltene precipitation to dilution-induced solvent shifting in aqueous systems via the ouzo ...
arxiv  

Assessing the Asphaltene Adsorption on Metal Oxide Nanoparticles [PDF]

Iranian Journal of Oil & Gas Science and Technology, 2016
The Taguchi design of experiments (DOE) approach is adopted here to evaluate the impact ofeffective factors such as nanoparticles type, nanoparticles to model solution mass ratio, asphaltenestructure, and temperature on asphaltene adsorption equilibrium.
Fatemeh Amin, Ali Reza Solaimany Nazar
doaj   +1 more source