Results 71 to 80 of about 8,964 (222)

Euglena sp. and its associated prokaryotic community degrade light crude oil

Journal of Phycology, Volume 62, Issue 5, Page 1417-1422, October 2026.
Abstract Oil enters the environment through natural and anthropogenic sources and poses a serious threat to water and soil. We hypothesized that algae and their associated prokaryotic communities from natural oil seeps are robust systems capable of surviving and degrading anthropogenic oil spills. We isolated Euglena sp.
Michelle Kulbatzki, Hilal Kaya, Sabina Marks, Lisa Voskuhl   +3 more
wiley   +1 more source

Molecular Dynamics Simulation of Self-Aggregation of Asphaltenes at an Oil/Water Interface: Formation and Destruction of the Asphaltene Protective Film

, 2014
It is well known that asphaltene molecules play a significant role in stabilizing emulsions of water in crude oil or diluted bitumen solutions: Molecular dynamics simulations were employed to investigate the aggregation anti orientation behaviors of ...
Zhao YP(赵亚溥), Ren SL, Liu J, Ren, SL (reprint author), Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China.   +3 more
core   +1 more source

Effects of hydrophobic CaO and SiO2 nanoparticles on Asphaltene Precipitation Envelope (APE): an experimental and modeling approach

Oil & Gas Science and Technology, 2018
An experimental and modeling approach was developed in this research to investigate the effects of CO2, new synthesized CaO and commercial SiO2 nanoparticle concentrations on the Asphaltene Precipitation Envelope (APE).
Ahmadi Yaser, Aminshahidy Babak
doaj   +1 more source

Simple Functionalization of Asphaltene and Its Application for Efficient Asphaltene Removal

, 2016
Asphaltene, the cheapest fraction of petroleum, was modified into a novel additive in order to facilitate a deasphalting process, such as paraffinic froth treatment.
Wonbum Pyeon (3096438), Jong-Duk Kim (1421263), Nam-sun Nho (3096441), Seonung Choi (3096444)   +3 more
core   +1 more source

A Novel Modified Petroresin Particle (MPRP) With Enhanced Oil–Water Selectivity for Cold Production in Heavy Oil Reservoirs

Advanced Functional Materials, Volume 36, Issue 75, 17 September 2026.
A novel oil–water selective conformance control agent, MPRP, is prepared via hydrophilic grafting and mechanical granulation. MPRP uniformly disperses in water, cohesively expands upon aging, and readily dissolves in the oil phase. During conformance control, it selectively aggregates in water channeling pathways to form effective plugs without ...
Guang Zhao, Dongfang Lv, Chang Liu, Changxu Wu, Yifei Liu, Caili Dai, Huazhou Li   +6 more
wiley   +1 more source

Influence of asphaltene precipitation on development effect of typical heavy oil reservoirs in eastern South China Sea

Youqi dizhi yu caishoulu
During the development of heavy oil reservoirs in the eastern South China Sea， asphaltene precipitation can cause blockages in reservoir throats， wellbores， and pipelines， leading to a decrease in the productivity of oil wells.
TU Yi, DAI Jianwen, YANG Jiao, WANG Yahui, MIAO Yun, ZHONG Xulin   +5 more
doaj   +1 more source

Improved thermodynamic investigation of asphaltene precipitation

, 2023
Asphaltenes are analogous to the “cholesterol” of crude oils, so they may cause significant flow assurance problems to various oil and gas processes and negatively affect the economy of the oil recovery, transportation, and processing by increasing ...
Alimohammadi, Sepideh
core   +1 more source

Experimental and mechanism study on the synergistic influence of asphaltene and pressure on the flow and rheological characteristics of waxy oil

Journal of Pipeline Science and Engineering
In underground reservoirs and offshore oilfields, the production and transportation of waxy oil inevitably involve pressure and asphaltene environment.
Yun Lei, Dehua Lai, Haoran Zhu, Rui Dou, Jiangbo Wen, Hanwen Chen, Haoping Peng, Pengfei Yu   +7 more
doaj   +1 more source

Asphaltene Stability of Some Iraqi Dead Crude oils

Journal of Engineering, 2019
Asphaltene is one of the fractions of the crude oil which is soluble in aromatics such as benzene or toluene and insoluble in alkane such as n-heptane, n-pentane or petroleum ether (mixture of alkane compounds).
Ali Anwar Ali, Mohammed S. Al-Jawad, Abdullah A. Ali   +2 more
doaj   +1 more source

Some biogenic-related compounds occluded inside asphaltene aggregates

, 2009
International audienceThe occluded compounds inside asphaltene aggregates were released from 16 asphaltenes through mild degradation processes oxidized by the H 2O2/CH3COOH system.
Liao, Zewen, Zhang Lvhui, Liao Zewen, Zhang, L., Creux, Patrice, Yang, C., Yang Chupeng, Creux Patrice   +7 more
core