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The Dynamic Interplay of Oil Mixing, Charge Timing, and Biodegradation in Forming the Alberta Oil Sands: Insights from Geologic Modeling and Biogeochemistry

By
Jennifer Adams
Jennifer Adams
Petroleum Geochemistry and Basin Modeling Group, 600 Dairy Ashford, Houston, Texas, 77079, U.S.A. (e-mail: jennifer.j.adams@conocophillips.com)Previous address: Petroleum Reservoir Group, Department of Geosciences, University of Calgary, 2500 University Dr., Calgary, Alberta, T2N 1N4, Canada.
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Steve Larter
Steve Larter
Petroleum Reservoir Group, Department of Geosciences, University of Calgary, 2500 University Dr., Calgary, Alberta, T2N 1N4, Canada (e-mails: slarter@ucalgary.ca; bennettb@gushor.com; huah@ucalgary.ca)
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Barry Bennett
Barry Bennett
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Haiping Huang
Haiping Huang
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Joseph Westrich
Joseph Westrich
Shell International E&P, Inc., 3737 Bellaire Blvd., Houston, Texas, 77025, U.S.A. (e-mail: joseph.j.t.westrich@shell.com)
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Cor van Kruisdijk
Cor van Kruisdijk
Shell Global Solutions, BV, Kessler Park 1, Rijswijk, 2288 GS, The Netherlands (e-mail: cor.van.kruijsdijk@shell.com)
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Published:
January 01, 2013

Abstract

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.

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Contents

AAPG Studies in Geology

Heavy-oil and Oil-sand Petroleum Systems in Alberta and Beyond

Frances J. Hein
Frances J. Hein
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Dale Leckie
Dale Leckie
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Steve Larter
Steve Larter
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John R. Suter
John R. Suter
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American Association of Petroleum Geologists
Volume
64
ISBN electronic:
9781629812649
Publication date:
January 01, 2013

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