Results 81 to 90 of about 1,919 (208)
Study on Asphaltene Precipitation Using Thin Film Micro-reactor [PDF]
, 2015 Asphaltenes are present in most petroleum materials and in all heavy oils and bitumen from oil sands. Asphaltenes are the heaviest and most complex molecules in crude oil and are defined by its solubility class as the constituents of oil which are ...
Musa, Muhamad Nabil Azmi
core
Study of asphaltene precipitation during CO
, 2011 This work focuses on asphaltene precipitation problem during dynamic displacement by CO 2 . Although CO 2 injection is one of the most important methods currently being used in enhanced oil recovery but it may change the properties of the crude oil and ...
Irzie Hani +7 more
core +1 more source
Molecular thermodynamics for prevention of asphaltene precipitation [PDF]
, 1996 Crude petroleum is a complex mixture of compounds with different chemical structures and molecular weights. Asphaltenes, the heaviest and most polar fraction of crude oil, are insoluble in normal alkanes such as n-heptane, but they are soluble in aromatic solvents such as toluene.
Wu, Jianzhong, Prausnitz, J.M.
openaire +2 more sources
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 +4 more
wiley +1 more source
Review on Asphaltene Precipitation and Deposition Kinetics and CO2 Interactions [PDF]
The precipitation and deposition of asphaltenes during enhanced oil recovery (EOR) and flow assurance operations, creates a huge problem that impacts operational efficiency during crude oil production.
Quainoo, Kwamena Ato +2 more
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Advances in Polymer Technology, Volume 2026, Issue 1, 2026.The study of the properties, chemical composition, and degradation patterns of rubber materials used in vehicle tires remains a complex and interdisciplinary task. Rubber for tires—more precisely, complex mixtures of elastomers containing fillers, plasticizers, binders, and other additives—is a condensed chemically active material, the composition and ...
Roman Tangalychev +3 more
wiley +1 more source
Asphaltene Precipitation Models: A Review [PDF]
, 2016 Asphaltenes are the heaviest and the most polar fractions of crude oil and are defined as a solubility class (typically soluble in toluene but insoluble in n-alkanes like n-heptane).
Subramanian, Sreedhar +2 more
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Impact of asphaltene precipitation on vapex performance [PDF]
, 2008 Bibliography: p. 123-129Many pages are in colour.The VAPEX (Vapor Extraction) is an oil recovery process, in which heavy oil or bitumen is mobilized by injection of a low molecular weight hydrocarbon solvent and is drained by gravity to a horizontal ...
Haghighat, Parnian
core +1 more source
A new thermodynamic model for the prediction of asphaltene precipitation in crude oil [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2010 It has been proved that asphaltene precipitation is a difficult problem to define and study. Precipitation of these complex and heavy organic compounds can cause serious problems in crude oil production and transportation, residual oil processing and ...
Alireza Fazlali +3 more
doaj
Journal of Petroleum Exploration and Production Technology, 2019 Carbon dioxide (CO2) injection is one of the most applied enhanced oil recovery methods in the hydrocarbon industry, since it has the potential to increase oil recovery significantly and can help reduce greenhouse gases through carbon storage in ...
Sherif Fakher +3 more
doaj +1 more source