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Showing 1 to 20 of 28 for “"Viscosity reduction"”.
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NEUTRON SCATTERING STUDIES OF CRUDE OIL VISCOSITY REDUCTION WITH ELECTRIC FIELD
… huge amounts of energy, we need to reduce the viscosity without using high temperature stream heating or diluent; As more and more off-shore oil is exploited at that we need reduce the viscosity without increasing temperature. The whole petroleum consumed in U.S. in 2009 was 18.7 million …
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A Study on the Heavy Crude Oil Viscosity Reduction with the Dissolution of Nitrogen and Carbon Dioxide
… heavy oil could be made to ow in pipelines. Viscosity reduction of heavy oils is the key to solving this problem. In this study, aside from injecting pure nitrogen and pure carbon dioxide separately into the oil, two different compositions of the mixture of the two gases were also injected. …
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Rheology of molten polystyrene with dissolved gases
… behave as excellent plasticizers, reducing viscosity significantly through the chain dilution effect and the addition of free volume. Rheological measurements and theoretical modeling are presented for molten polystyrene with dissolved gases, including carbon dioxide, 1,1-difluoroethane …
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Electrical treatment of waxy model oil to improve its cold mobility
… of waxy crude oils. The sharp increase of viscosity due to wax precipitation increases the pressure drop and thus raises the capital and operating cost of transportation. Conventional methods of lowering the viscosity of waxy oils include adding chemicals or externally heating the pipeline, …
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Melt Processing Thermally Unstable and High Molecular Weight Polymers with Supercritical Carbon Dioxide
… use CO₂ to plasticize and, thereby, reduce the viscosity of an acrylonitrile (AN) copolymer in an extrusion process and render it melt processable. In order to assess whether it was possible to absorb adequate amounts of CO₂ in short residence times by injection into a single screw extruder, a …
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Surface textures and non-Newtonian fluids for decreased friction in full film lubrication
… determine the effects of asymmetry on friction reduction. Gap controlled experiments with Newtonian fluids were performed on a custom tribo-rheometer in order to measure the normal force production and apparent viscosity reduction due to the surface textures. This work shows that symmetry must …
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Catalytic Bitumen Upgrading under Methane Environment
… All these catalysts show a significant viscosity reduction companied by acceptable coke yield, better stability and compatibility and the high liquid yield. With series of experiment results, it can be concluded that the catalysts promote the activation of methane and the incorporation …
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Improved Experimental and Mathematical Techniques for Measurement of Solvent Gas Diffusivity in Heavy Oils
… Thermal recovery methods, which rely on heat for viscosity reduction, are generally accepted as viable and several steam based projects have been successful, especially in Canada. Using light hydrocarbon solvents can provide similar viscosity reduction and is potentially more efficient in …
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Melt Processing of Metastable Acrylic Copolymer Carbon Precursors
… a processing window: measurement of steady shear viscosity as a function of both temperature and time, measurement of the magnitude of the complex viscosity (|η*|) as a function of temperature using a temperature sweep, and measurement of the angular frequency dependence of |η*|. Through a …
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Viscosity modification of gum arabic as a means of enhancing marketability
… of monovalent metal ions was found to double the viscosity of the gum as compared to the viscosity of the raw gum, and more than triple the viscosity of the free acid form at low solution concentration. At high solution concentration, monovalent ions increase the viscosity of the solution by about …
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Investigation of Processing Conditions and Viscoelastic Properties on Frictional Sliding Behavior of Unidirectional Carbon Fiber Epoxy Prepreg
… Viscoelastic properties such as the complex viscosity (η*), storage modulus (G'), loss modulus (G"), and loss factor (tan δ) were used to determine the critical transition events (such as gelation) during cure. An understanding of changes in viscoelastic properties as a function of time, …
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Phase Behaviour and Mass Transfer of Solvent(s)-CO2-Heavy Oil Systems Under Reservoir Conditions
… Subsequently, the enhanced swelling effect and viscosity reduction of CO2-heavy oil systems with the addition of solvent C3H8 or n-C4H10 are experimentally measured and theoretically determined. An increased swelling effect of heavy oil is obtained by adding gas solvent C3H8 or n-C4H10 into the …
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Mass transfer studies in heavy oil recovery using solvents
… sometimes called bitumen, is known for its high viscosity (above 100 cp) and low API gravity (below 22⁰). In most cases, viscosity reduction is needed for the final product. There is a considerable amount of heavy oil in Alberta, Canada and the world's largest heavy oil deposit is in Venezuela. …
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Jatropha curcas oil as a bio-based rejuvenating agent for reclaimed asphalt pavement mixtures
… of JCO with virgin binder decreased the viscosity and improved the visco-elastic properties of the rejuvenated binder. Viscosity reduction was also observed when JCO incorporated with reclaimed asphalt binder. Hence, this indicates the potential to reduce the production temperature of the …
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Characterization of Polymer Modified Asphalt Binders Containing Processed Oil
… oil to polymer modified binders reduces viscosity and improves workability, while the modifiers improve the rutting resistance of them, however, the addition of processed oil reduces the binder’s rutting performance due to decrement of viscosity. The study also found that the conjugating …
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Micro-Scale Simulation of Evaporation, Condensation and Transport in Porous Media
… methods. The effect of temperature on bitumen viscosity reduction during steam flooding operation as well as steam condensation, trapping of the oil behind the steam front and finally countercurrent flow of steam and condensate-bitumen due to gravity effects.
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Rheology of chocolate. Rheological studies of chocolate in relation to their flow and mixing properties during manufacture.
… for a given recipe, yields a minimum stable viscosity (of particular commercial value). d) to assess the type of mixer able to provide this duty. The experimental work involved rheological studies with concentric cylinder and tubular viscometers, operated to measure viscosity as a function of …
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Design and prototype of dual loop lubricant system to improve engine fuel economy, emissions, and oil drain interval
… for controlling wear and reducing friction. Viscosity reduction results in fuel economy improvement, with benefits of up to three percent reported in some studies. Such reductions are limited by engine durability constraints. Recent limits on oil additives, driven by emissions aftertreatment …
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The rheology of liquid crystal polymer blends.
… polymer can be used as a processing aid. A reduction of viscosity was noticed in all of the tests carried out and is attributed to the change in morphology induced by the addition of liquid crystal polymer. It would be of great benefit to the polymer processor if an understanding of the …
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Enhanced Cyclic Solvent Process (ECSP) for Thin Heavy Oil Reservoirs
… drive to occur during which oil regains its high viscosity because a significant amount of solvent gas evolves out of oil. Also, at low-to-intermediate pressures, the methane solubility in the oil is not high. Additionally, continuous free gas saturation during early production results in high gas …
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