Results 41 to 50 of about 745 (180)

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

Evaluation of the Influence of Antifoam Formulations on Asphaltene Aggregates Using AFM and SEM‐EDS

Journal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.
ABSTRACT Asphaltenes, naturally occurring surfactants in crude oil play a pivotal role in stabilizing oily foams during primary oil processing. Accordingly, understanding how antifoam formulations influence asphaltene aggregation is essential. This study investigates the effect of polydimethylsiloxane (PDMS) with varying molar masses on asphaltene ...
Mariana Teixeira Mendes, Andressa Oliveira dos Santos, Rafael Farias Perez, Osvaldo Karnitz Junior, Claudia Regina Elias Mansur   +4 more
wiley   +1 more source

Liquid–liquid equilibrium studies of n‐butane–bitumen system with application to solvent‐aided in situ bitumen recovery

The Canadian Journal of Chemical Engineering, Volume 104, Issue 1, Page 425-441, January 2026.
Abstract Solvent‐assisted recovery methods have gained attention as an alternative to conventional thermal methods which have significant environmental drawbacks and high greenhouse gas emissions. Solvent‐assisted recovery methods can lead to various phase equilibria, such as vapour–liquid equilibrium (VLE) and liquid–liquid equilibrium (LLE), under ...
Amr Mahgoub, Mohammad Shah Faisal Khan, Mahmood Abdi, Hassan Hassanzadeh   +3 more
wiley   +1 more source

Multiphase flow modeling of asphaltene precipitation and deposition

Oil & Gas Science and Technology, 2018
Asphaltene precipitation in reservoirs during production and Enhanced Oil Recovery (EOR) can cause serious problems that lead to reduction of reservoir fluid production.
Tabzar Amir, Fathinasab Mohammad, Salehi Afshin, Bahrami Babak, Mohammadi Amir H.   +4 more
doaj   +1 more source

Investigation the effect of different ionic liquids based-aryl imidazole on the onset precipitation of asphaltene

Scientific Reports, 2023
Precipitation and deposition of asphaltene are considered as catastrophic issues facing the petroleum industry. Asphaltene deposition mainly occurs at variety places such as formation pore spaces, pumps, pipelines, wellbore, wellhead, tubing, surface ...
Raghda A. El-Nagar, Maher I. Nessim, Dina A. Ismail, Manal G. Mohamed, Alaa Ghanem   +4 more
doaj   +1 more source

On the evaluation of asphaltene adsorption onto dolomite surface: The roles of flow condition, composition of asphaltene, and dolomite size

Alexandria Engineering Journal, 2022
Asphaltene precipitation/deposition is one of the main problems in petroleum industry at various stages. In this study, various controlling factors on the adsorption of different types of asphaltene on the surface of dolomite of different size, as one of
Sajjad Ansari, Hamid Bahmaninia, Mohammad-Reza Mohammadi, Mehdi Ostadhassan, Saeid Norouzi-Apourvari, Mahin Schaffie, Mohammad Ranjbar, Abdolhossein Hemmati-Sarapardeh   +7 more
doaj   +1 more source

Towards Carbon Neutralization: Clean and Efficient Use of Coal

Carbon Neutralization, Volume 5, Issue 1, January 2026.
This paper provides a comprehensive exploration of the clean and efficient utilization of coal resources, with a particular emphasis on the potential of coal chemical technology, carbon materials, and CCUS technology, and the opening up of innovative pathways for the utilization of coal resources.
Xin Wen, Wei Song, Xue Wang, Chunrong He, Xinyue Chen, Ting Wang, Penggao Liu   +6 more
wiley   +1 more source

Study on Hydrothermal Catalytic Oxidation Demulsification of Oily Sludge

Engineering Reports, Volume 8, Issue 1, January 2026.
Hydrothermal catalytic oxidation (HTCO) treated oily sludge optimally at 50 mg L−1 catalyst, 200°C, 10 min, oxidation coefficient 1, and 1:5 solid–liquid ratio, achieving 89.46% oil recovery. HTCO efficiently breaks emulsions, improves oil quality, lowers costs, and benefits the environment.
Tao Yu, Zhenhu Chen, Rong Zhang, Mingming Du, Chengtun Qu   +4 more
wiley   +1 more source

Experimental Investigation and Modeling of Asphaltene Precipitation Due to Gas Injection [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2012
Asphaltene instability is one of the major problems in gas injection projects throughout the world. Numerous models have been developed to predict asphaltene precipitation; The scaling equation is an attractive tool because of its simplicity and not ...
Siyamak Moradi, Davood Rashtchian, Mostafa Ganjeh Ghazvini, Mohammad Ali Emadi, Bahram Dabir   +4 more
doaj  

Screening of inhibitors for remediation of asphaltene deposits: Experimental and modeling study

Petroleum, 2018
One of the most severe problems during production from heavy crude oil reservoirs is the formation of asphaltene precipitation and as a result deposition in the tubing, surface facilities and near wellbore region which causes oil production and ...
Mehdi Madhi, Riyaz Kharrat, Touba Hamoule   +2 more
doaj   +1 more source