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 47 for “"Gravity drainage"”.
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Mechanistic Simulation of Solvent-aided Gravity Drainage of Bitumen
… 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 mixture was performed. Then, a highly refined and simple mechanistic model was constructed and …
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On Stability in Gravity Drainage Oil Sand Recovery Process
… the oil volume heated and the higher the oil drainage rate. Stability phenomena in SAGD occur both at the edge of the chamber and at the liquid pool that exists above the production well. Previous studies have demonstrated that instability at the steam chamber edge can enhance heat transfer …
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Heavy Oil Recovery by Gas Assisted Gravity Drainage in Naturally Fractured Reservoirs
… fractured system the oil can be recovered by gravity drainage and solvent extraction. The increase in pressure from immiscible conditions to first contact miscible condition resulted only in a modest increase in recovery. The effect of gas injection rate on recovery performance was significant …
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Numerical simulation of gas-oil gravity drainage for centrifuge experiments and scaled reservoir matrix blocks
Includes bibliographical references (pages 106-110).
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Design and real-time process optimisation of steam assisted gravity drainage for improved heavy oil recovery.
… oil recovery processes like Steam Assisted Gravity Drainage and the success of such technologies are critically dependent on accurate knowledge of reservoir, well and fluid properties of oil under variety of pressure and temperature conditions. This research project has provided some …
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Multiphase mechanisms and fluid dynamics in gas injection enhanced oil recovery processes
… (5 – 10%) oil field recoveries. Conversely, the gravity stable mode of gas injection has carved its niche as one of the most effective methods of gas injection EOR in the dipping reservoirs and pinnacle reefs. The Gas Assisted Gravity Drainage (GAGD) process is therefore being developed at LSU to …
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The convective desalination of sea ice
… desalination, which is also often called gravity drainage by geophysicists. Modelling convective desalination requires an understanding not only of the thermo-dynamics of sea-ice growth but also of its internal fluid dynamics. This thesis considers a class of physical systems called mushy …
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On Steam Based Recovery Process Design
… Steam Stimulation (CSS), and Steam Assisted Gravity Drainage (SAGD). The choice of method depends on the geology, initial reservoir conditions, and the viscosity of the oil. In the research documented here, a detailed examination of the Liaohe heavy oil operation is analyzed from field data. …
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Experimental Studies on Solvent Screening and Performance Analysis for Bitumen Recovery Using ES-SAGD
… 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 Solvent Steam Assisted Gravity Drainage (ES-SAGD) process is a hybrid approach that …
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Reservoir petrology and production characteristics of the Lytton Springs Oil Field, Caldwell County, Texas
… and to make predictions as to the effect of gravity drainage on future production.
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Principles and techniques for conditioning of waste-activated sludge by direct slurry freezing
… filter cake quality when vacuum filtration and gravity drainage on sand beds were utilized. The sludge samples for the principal part of the investigation were obtained from three different sources: two extended aeration plants treating domestic sewage and a conventional activated sludge plant …
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Effect of Temperature on Performance of Vapex Process for Heavy Oil
… be the most viable option for improving the oil drainage rate of Vapex (Vapor Extraction) in extra-heavy oil formations. This study was aimed at quantifying the upper limit of oil rates achievable with heated solvent injection. Results of the performed research can also be used to assess the …
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Screening Geostatistical Realizations for SAGD Reservoir Simulation
… of bitumen recovery using the steam-assisted gravity drainage (SAGD) process strongly depends on the heterogeneities that exist in the petrophysical properties of the reservoir. Petrophysical properties and geological features are normally estimated based on known well data and modeled using …
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Aluminium foam production using calcium carbonate as a foaming agent
… is found to significantly reduce the rate of gravity drainage of the melt. The formation of the thin oxide film during foaming gives rise to a number of artefacts on the cell surface, including stretch marks and tear bands. A range of chemical and surface analysis techniques are used to …
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A Calculation Model for Steam Property Variation Along Wellbore Trajectory in SAGD Process
Steam-Assisted Gravity Drainage is an effective approach for recovering heavy oil and bitumen and its essence idea is to introduce steam heat into cold reservoir and reduce oil viscosity. In a typical SAGD process, two horizontal wells were drilled inside the target formation, one is put on the top …
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Application of Polymer and Nanomaterials for Improving Heavy Oil Recovery
… can be produced and recovered. Steam-assisted gravity drainage (SAGD), used as a common technique to produce heavy oil in Canada (specifically in oil sands reservoirs), requires a lot of energy and negatively impacts the environment. Using environmentally friendly and cost-effective techniques …
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Modelling of brine transport mechanisms in Antarctic sea ice
… subsequently begins to occur due to vertical gravity drainage into the underlying ocean water. This study introduces the application of a biphasic model based on the Theory of Porous Media (TPM) which considers a solid phase for the pore structure of the ice matrix as well as a liquid phase …
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Improving Indigenous Engagement and Consultation for Oil Sands Development in the Regional Municipality of Wood Buffalo, Alberta, Canada
… environmental assessment for nine Steam Assisted Gravity Drainage (SAGD) oil sands developments in the Regional Municipality of Wood Buffalo, Alberta, Canada. It presents and applies a new framework designed to help identify opportunities to improve Indigenous participation in environmental …
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Microfluidic Study of Gravity-Driven Drainage and Coalescence of Aqueous Two Dimensional Foams
… is bubble coalescence, which is driven by the gravity drainage of the continuous phase. The drainage acts to push the bubbles against each other, and leads to the formation of thin lamellae, which break and cause the coalescence. The second is the mass transfer of the dispersed phase through …
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