Results 31 to 40 of about 781 (132)

Formation damage due to asphaltene precipitation during CO2 flooding processes with NMR technique

Oil & Gas Science and Technology, 2019
In order to quantitatively evaluate the pore-scale formation damage of tight sandstones caused by asphaltene precipitation during CO2 flooding, the coreflood tests and Nuclear Magnetic Resonance (NMR) relaxometry measurements have been designed and ...
Qian Kun, Yang Shenglai, Dou Hong-en, Pang Jieqiong, Huang Yu   +4 more
doaj   +1 more source

Prediction of Solvent Effect on Asphaltene Precipitation at Reservoir Conditions [PDF]

Journal of Petroleum Science and Technology, 2012
The aim of the current study is to evaluate the effects of inhibitors or solvents on asphaltene precipitation under reservoir conditions. To this end, the interaction between live oil and solvent, and its side effects on precipitated/dissolved asphaltene
B. Mirzayi, S. A. Mousavi-Dehghani, Sobhi G. A.   +2 more
doaj   +1 more source

Large‐Scale Applications of Plasma Technologies: Progresses and Challenges

High Voltage, EarlyView.
ABSTRACT Plasma technologies convert electrical power into energetic electrons, ions, reactive species, radiation and heat, thereby breaking through the bottleneck of purely thermal or chemical routes and bringing impressive changes to our world. This roadmap reviews the progress and challenges of plasma technologies from a large‐scale and application ...
Pankaj Attri, Liuyang Bai, Dmitry Batomunkuev, Xueke Che, Guoxing Chen, Zhitong Chen, Wei Cui, Liguang Dou, Zhi Fang, Yangyang Fu, Fausto Gallucci, Yiming Guo, Bangdou Huang, Yinghong Li, Sirui Li, Hua Liang, Liangliang Lin, Dingxin Liu, Xiangyang Liu, Xinpei Lu, Ruonan Ma, Lanlan Nie, Guanghui Niu, Yuge Ouyang, Tao Shao, Jing Sun, Yong Tang, Xin Tu, Sergey P. Vashchenko, Hang Wang, Xianjie Wang, Anke Weidenkaff, Yun Wu, Haohan Xie, Shaojun Xu, Zongxian Yang, Fangli Yuan, Cheng Zhang, Hao Zhang, Jishen Zhang, Shuai Zhang, Yejian Zhang, Zhe Zhang, Zhibo Zhang, Peng Zhao, Shicheng Zhao, Linlin Zhong, Renwu Zhou, Zhenhua Zhou, Xi Zhu, Yifei Zhu, Haohua Zong   +51 more
wiley   +1 more source

Prediction of the Gas Injection Effect on the Asphaltene Phase Envelope

Oil & Gas Science and Technology, 2015
Asphaltene instability may occur when pressure, temperature and compositional variations affect the reservoir oil. Permeability reduction, wettability alteration, and plugging of wells and flow lines are the consequences of this phenomenon. Therefore, it
Bahrami Peyman, Kharrat Riyaz, Mahdavi Sedigheh, Firoozinia Hamed   +3 more
doaj   +1 more source

Subsurface Hydrocarbon Biodegradation in the Context of Microbial Habitability and Hydrogeologic, Thermal, and Geologic Evolution of the Colorado Plateau

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Subsurface microbial ecosystems associated with hydrocarbon reservoirs are shaped by temperature, salinity, redox gradients, and fluid flow. However, the drivers of microbial activity and hydrocarbon biodegradation over geologic timescales remain poorly constrained.
Meera P. Shah, Jennifer McIntosh, Peter Reiners, Lydia Bailey, Bradley S. Stevenson, Grant Ferguson, Ji‐Hyun Kim, Henrik Drake, Magdalena R. Osburn   +8 more
wiley   +1 more source

Asphaltene Precipitation in Algerian Oilfields: Experimental Investigation and Field Mitigation

Chemical Engineering Transactions, 2014
This study addresses two aspects for mitigating the asphaltene precipitation and deposition problem in Algerian oilfields: experimental study and field solution to the deposition problem. In the experimental study and in order to differentiate cases with
M. Eutamene, N. Mouloudj, A.H. Meniai, H. Djema, M. Khodja   +4 more
doaj   +1 more source

In‐situ asphaltene capture with iron oxide nanoparticles in steam‐assisted gravity drainage (SAGD) for improved recovery and partial upgrading of bitumen

The Canadian Journal of Chemical Engineering, Volume 104, Issue 9, Page 4787-4808, September 2026.
Key improvements obtained by incorporating nanoparticles into a lab‐scale SAGD process configuration. The bar plots show enhanced oil recovery, reduced viscosity, and increased asphaltene adsorption in nanoparticle‐assisted scenarios compared with conventional SAGD.
Luis Prada, Saleh S. Baakeem, Mabkhot BinDahbag, M. Daniela Contreras‐Mateus, Jesus Botett, Afif Hethnawi, Nashaat N. Nassar   +6 more
wiley   +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  

Chemical study of asphaltene inhibitors effects on asphaltene precipitation of an Iranian oil field

Oil & Gas Science and Technology, 2020
The amount of precipitated asphaltene can be considerably reduced with pretreatment of asphaltene inhibitor, in the crude oil. Efficiency of asphaltene inhibitors mainly depends on some parameters such as pH of the oil and the chemical structure of ...
Ahmadbaygi Afshar, Bayati Behrouz, Mansouri Mohsen, Rezaei Hossein, Riazi Masoud   +4 more
doaj   +1 more source

An assessment of stress and production rate of sucker rod heat pipes in oil well pumping system

Deep Underground Science and Engineering, Volume 5, Issue 3, Page 712-727, September 2026.
The sucker rod pumping system is the preferred oil extraction technique. The concept about equipping the hollow vacuum space in solid sucker rods with heat pipe has been scrutinized in terms of stress and oil production evaluation. Abstract The implementation of the heat pipe concept in sucker rods for oil pumping systems negates the requirement for an
R. S. Anand, Ang Li, Wenbo Huang, Juanwen Chen, Qingshan Ma, Fangming Jiang   +5 more
wiley   +1 more source