The Dynamic Interplay of Oil Mixing, Charge Timing, and Biodegradation in Forming the Alberta Oil Sands: Insights from Geologic Modeling and Biogeochemistry
Jennifer Adams, Steve Larter, Barry Bennett, Haiping Huang, Joseph Westrich, Cor van Kruisdijk, 2013. "The Dynamic Interplay of Oil Mixing, Charge Timing, and Biodegradation in Forming the Alberta Oil Sands: Insights from Geologic Modeling and Biogeochemistry", Heavy-oil and Oil-sand Petroleum Systems in Alberta and Beyond, Frances J. Hein, Dale Leckie, Steve Larter, John R. Suter
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Regional-, field-, and reservoir-scale studies of the petroleum geology, petroleum biogeochemistry, and oil fluid properties of the western Canada oil sands produce the first high-resolution model of oil charge systematics for the oil sands. The sources and alteration history of the Lower Cretaceous and underlying Mesozoic and late Paleozoic oil fields of north-central Alberta (Peace River Arch [PRA] area) were investigated using a very large database of public and in-house data to define the unaltered end-member oils that charged the oil sand reservoirs and to delineate the reservoirs in the study area that are still biologically active today. The complexity of the petroleum systems and variation in source organic facies observed in this study are probably typical of the extremely large petroleum accumjulations that dominate the world's petroleum occurrences.