Enhanced viscosity reduction in heavy oils by subcritical water
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Petroleum Exploration and Production Technology"
DOI: 10.1007/s13202-017-0370-y
Abstract: We determine the chemical changes associated with viscosity reduction when heavy oil is cracked in subcritical water. The viscosity reduction has a temperature threshold for onset of 290 °C—this suggests an enhanced acid cracking regime associated… read more here.
Keywords: viscosity; subcritical water; reduction heavy; viscosity reduction ... See more keywords
Mechanism of viscosity reduction of okra pectic polysaccharide by ascorbic acid.
Sign Up to like & getrecommendations! Published in 2022 at "Carbohydrate polymers"
DOI: 10.1016/j.carbpol.2022.119196
Abstract: In this work, effects of ascorbic acid (AH2) treatment on the viscosity and structural properties of okra pectic polysaccharide (OPP) and its mechanism were investigated. Results showed that AH2 could decrease the apparent viscosity of… read more here.
Keywords: viscosity reduction; okra pectic; pectic polysaccharide; ascorbic acid ... See more keywords
Studies on viscosity reduction and structural change of crude oil treated with acoustic cavitation
Sign Up to like & getrecommendations! Published in 2020 at "Fuel"
DOI: 10.1016/j.fuel.2019.116638
Abstract: Abstract The present study discusses the structural changes of Tahe crude oil components which were treated with acoustic cavitation catalyzed by nickel oleate. In these studies, rheological analysis, SARA analysis, FTIR quantitative analysis and gas… read more here.
Keywords: viscosity reduction; acoustic cavitation; crude oil; treated acoustic ... See more keywords
Viscosity reduction in concentrated protein solutions by hydrodynamic cavitation
Sign Up to like & getrecommendations! Published in 2019 at "International Dairy Journal"
DOI: 10.1016/j.idairyj.2019.04.015
Abstract: Abstract Controlling viscosity of concentrated protein solutions is an integral part of dairy powder production. Hydrodynamic cavitation has been suggested as a new processing tool for reducing the viscosity of concentrates prior to spray drying.… read more here.
Keywords: viscosity; hydrodynamic cavitation; concentrated protein; viscosity reduction ... See more keywords
A state-of-the-art review of nanoparticle applications with a focus on heavy oil viscosity reduction
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Molecular Liquids"
DOI: 10.1016/j.molliq.2021.117845
Abstract: Abstract With the continuous depletion of easy-to produce oil resources, the effective and low-cost exploitation and upgrading of heavy oil becomes a key to alleviate the contradiction between energy supply and social energy demand. However,… read more here.
Keywords: oil viscosity; oil; viscosity; viscosity reduction ... See more keywords
Viscosity reduction mechanism in high temperature of a Gemini viscoelastic surfactant (VES) fracturing fluid and effect of counter-ion salt (KCl) on its heat resistance
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2018.01.052
Abstract: Abstract In the past several decades, Gemini viscoelastic surfactant has been applied for many cases due to its specific properties, including clean fracturing fluid. As we know that counter-ions can greatly promote the micelle aggregation… read more here.
Keywords: heat resistance; viscosity; viscosity reduction; effect ... See more keywords
Mechanism Analysis of Heavy Oil Viscosity Reduction by Ultrasound and Viscosity Reducers Based on Molecular Dynamics Simulation
Sign Up to like & getrecommendations! Published in 2022 at "ACS Omega"
DOI: 10.1021/acsomega.2c02198
Abstract: Ultrasound and viscosity reducers are commonly used methods to reduce the viscosity of heavy oil. In order to compare the viscosity reduction effects of ultrasound and viscosity reducers and study their mechanism of interaction on… read more here.
Keywords: oil; viscosity; ultrasound viscosity; viscosity reducers ... See more keywords
Effect of Textural Properties and Surface Chemical Nature of Silica Nanoparticles from Different Silicon Sources on the Viscosity Reduction of Heavy Crude Oil
Sign Up to like & getrecommendations! Published in 2020 at "ACS Omega"
DOI: 10.1021/acsomega.9b04041
Abstract: The main objective of this study is to evaluate the effect of the textural properties and surface chemical nature of silica nanoparticles obtained from different synthesis routes and silicon precursors, on their interactions with asphaltenes… read more here.
Keywords: viscosity; microscopy; viscosity reduction; textural properties ... See more keywords
Anomalous Heavy-Oil Rheological Thinning Behavior upon Addition of Nanoparticles: Departure from Einstein’s Theory
Sign Up to like & getrecommendations! Published in 2017 at "Chemical Engineering Communications"
DOI: 10.1080/00986445.2017.1302943
Abstract: Heavy and extra-heavy oils generally exhibit high viscosity, which is detrimental to their production, transport, and refining. The oil & gas industry has thoroughly investigated the use of chemical agents to improve the mobility of… read more here.
Keywords: viscosity; upon addition; viscosity reduction; heavy oil ... See more keywords
Effect of reaction temperature and hydrogen donor on the Ni0@graphene-catalyzed viscosity reduction of extra heavy crude oil
Sign Up to like & getrecommendations! Published in 2017 at "Petroleum Science and Technology"
DOI: 10.1080/10916466.2016.1241805
Abstract: ABSTRACT Ni0@graphene nanocomposites were prepared via a solvothermal method and used as the catalysts for the viscosity reduction of extra heavy crude oil. Higher graphene content in Ni0@graphene nanocomposite has an adverse effect on its… read more here.
Keywords: viscosity; graphene; ni0 graphene; viscosity reduction ... See more keywords
Modeling microbial-induced oil viscosity reduction: Effect of temperature, salinity and nutrient concentration
Sign Up to like & getrecommendations! Published in 2018 at "Petroleum Science and Technology"
DOI: 10.1080/10916466.2018.1463253
Abstract: ABSTRACT This research simulated oil recovery with emphasis on oil viscosity reduction by direct microbe action and metabolites; predicted hydrogeochemical reactions involved with nutrient – brine interaction in reservoirs. PHREEQC was used to simulate reactions… read more here.
Keywords: nutrient concentration; oil viscosity; oil; viscosity reduction ... See more keywords