Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 131 for “"Bitumen"”.
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Studies of Bitumen Aeration
In the oil sand industry, bitumen is separated from sands by aerating the heavy oil so that it can float out of a flotation vessel, leaving the unaerated sands behind. A bubble-against-plate apparatus equipped with a high-speed camera has been developed to record the optical interference patterns …
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Catalytic Bitumen Upgrading under Methane Environment
In industrial field, hydrocracking is conventionally used to upgrade crude oil and improve the quality of oil products. However, the high investment cost and strict experimental conditions limit the development of this technology. The utilization of methane, which is naturally available as the …
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Deformation behaviour of bitumen and bituminous mixes
… monotonic and cyclic deformation behaviour of bitumen and asphalt mixes. The first part of this dissertation is concerned with an experimental and theoretical investigation of the deformation behaviour of bitumen. The second part is concerned with the deformation of bituminous mixes. A brief …
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Measurement and Modeling of Pentane-Diluted Bitumen Phase Behaviour
The phase behavior of mixtures of bitumens and n-alkanes is a key factor in the design and optimization of solvent-assisted heavy oil recovery processes and solvent deasphalting processes. However, data and comprehensive models are lacking for these mixtures. Crude oil phase behavior is typically …
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Reactor Design for Partial Upgrading of Bitumen via Aquaprocessing
… crude oil produced from Aquaprocessing of bitumen requires 50 vol.% less diluents than the Athabasca bitumen to meet the pipeline specifications. This thesis is focused on evaluating the reactor design parameters required for scale-up of this technology. The kinetic parameters for …
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Mechanistic Simulation of Solvent-aided Gravity Drainage of Bitumen
… alternative method for recovering heavy oil and bitumen to reduce the viscosity and density of the bitumen. In this study, solvent assisted thermal gravity drainage is modelled in CMG STARS using propane as the solvent. First, the modeling of thermosphysical properties of bitumen and propane …
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Lignosulfonate as an Alternative Filler in Bitumen Stabilised Materials (BSMs)
… including as a partial replacement to bitumen in asphalt mix design due to its similar composition to that of bitumen. In a recent study, the lignosulfonate was seen to have improved the resistance to permanent deformation of an asphalt mix design and was proposed for use as a filler in …
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Partial Upgrading of Bitumen Through Combinations of Deasphalting and Visbreaking
… for pipeline transport of Western Canadian bitumen can increase the pipeline capacity for bitumen and pontentially reduce operating costs. One approach to do so is to combine visbreaking (VIS) and solvent deasphalting (SDA) to obtain a lower density and viscosity bitumen. Visbreaking is a …
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High Temperature and High Pressure Determination of the Viscosity and Density of Bitumen as well as the Mutual Solubility of a Bitumen and Water Mixture
… the density, viscosity and mutual solubility of bitumen and bitumen/water mixtures greatly improves the exploitation of these reservoirs that require thermal recovery techniques. Determining these parameters is challenging due to the high temperatures and pressures of these reservoirs. This work …
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Quantification of Trapped Diluted Bitumen Droplets in Gravel: an Experimental Study
Adverse environmental effects caused by diluted bitumen (dilbit) spills have led to serious public concern. Compared to marine systems, the cleanup of oil-contaminated sediment in rivers is more difficult. Hyporheic flow, where surface water flows through the streambed, is one of the contributing …
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Quantifying the U.S. Coast Guard Ecological Risk Assessment on Diluted Bitumen
… Ecological Risk Assessment (CERA) on diluted bitumen (DB) and compare the toxicity of DB to conventional crude (CC) oils. At the height of the domestic energy renaissance, 103,000 barrels of DB were transported via railcar each day to five refineries throughout the Delaware Bay tri-state …
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Application of PC-SAFT Equation of State to Bitumen/Solvent Systems
… process is promising to recovery Canada's bitumen recourses, but the prediction techniques for the solubility, density and viscosity of bitumen and solvent mixtures in reservoir simulation are not well developed. This thesis works to develop the application methodology of the simplified …
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Valorising South African lignin as a sustainable bitumen additive in pavement engineering
… to using lignin as a partial substitute for bitumen due to chemical similarities. Bitumen is a viscoelastic liquid obtained from the distillation of crude oil and is typically used to bind aggregates to produce asphalt. This study investigated the performance of four different lignin types …
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Machine Vision for Road Pavement Applications Bitumen Coverage and Grain Size Estimation
… binder that holds the stones together, called bitumen. One step in testing the affinity is to manually estimate the degree of bitumen coverage after the stones covered in bitumen has been washed for a while. The goal with the first two papers is to replace this manual estimation by image …
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In-Situ Upgrading and Recovery Enhancement of Athabasca Bitumen by Ultra-Dispersed Nanocatalysts
… are extensively used to extract heavy oil and bitumen with reasonable recovery percentages to compensate for the light oil production decline in recent years. In addition, new technologies are tested to increase the value of the produced liquids. Nanoparticles technology is emerging as a new …
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Experimental Studies on Solvent Screening and Performance Analysis for Bitumen Recovery Using ES-SAGD
The recovery of highly viscous bitumen from oil sands reservoirs requires energy-intensive in-situ thermal methods, notably Steam-Assisted Gravity Drainage (SAGD). While SAGD is commercially proven, it is limited by a high Steam-to-Oil Ratio (SOR) and substantial environmental impact. The Expanding …
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Density and Viscosity of Light and Heavy Phases from Mixtures of Bitumen and Solvent
… processes, condensed water and a mixture of bitumen and solvent drain to the producer well. The mixture of bitumen and solvent can separate into a bitumenrich (heavy) liquid phase and a solvent-rich (light) liquid phase. Accurate characterization of the physical properties of these phases is …
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Application of Taylor Dispersion Technique to Measure Molecular Diffusion Coefficient of Hexane-Bitumen System
… and analytic limitations in liquid solvent-bitumen diffusion studies. Taylor dispersion technique has been selected in this work due to its convenient short run-time experiments and reliable data analysis to find molecular diffusion coefficients in hexane-bitumen system. For the first time, …
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