Abstract
This study focused on the determination of detailed grain morphology using SEM technology on some Athabasca oil sands samples obtained from the Upper McMurray Formation in the Manville Group which occurs in the Western Canada Sedimentary Basin. The research was carried out using scientific techniques to understand grain morphology—being a major effect in discerning reservoir quality—a factor which is essential for in-situ bitumen recovery. After studying various grain size and shape parameters, results showed that Sample B is poorly sorted medium sand of relatively low porosity but high permeability. Sample C on the other hand is moderately sorted fine sand of relatively high porosity but low permeability. It was also found out that although both oil sand samples contain heavy oil which is essentially recoverable in-situ; Sample B proved to be more promising due to its higher permeability values. At the end of the study, it was recommended that further research be carried out on the oil sands samples by use of core analysis techniques; computer-based simulation for heavy oil recovery; and a general study of structural effects on oil sands such as weathering and fracturing, all of which are important in better-quality in-situ bitumen recovery.
Highlights
This study was carried out on the oil sands of Canada, found in Athabasca, within the province of Alberta, where in lies the estuarine McMurray Formation
It is important to note that a lot of studies have been carried out previously on the Athabasca oil sands of Canada, but only a limited amount of work is available on the grains—its characteristics and morphology—of these sands
It is hoped that a study as this one will succeed in studying sufficiently the morphology of the oil sands grains using Scanning Electron Microscope (SEM) technology
Summary
This study was carried out on the oil sands of Canada, found in Athabasca, within the province of Alberta, where in lies the estuarine McMurray Formation. It is important to note that a lot of studies have been carried out previously on the Athabasca oil sands of Canada, but only a limited amount of work is available on the grains—its characteristics and morphology—of these sands. The second event attributed to the evolution of the WCS basin began from the Late Jurassic to Early Eocene and is characterized by the collision of the Pacific and the North American plates These collisions gave rise to the disconnection of the wedge from the basement; the northeastward transposition
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