The Keg River/Winnipegosis petroleum system - Source to trap (part 2)

Conference · Fri Mar 01 04:00:00 EST 1991 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:5801862

Kirkby, K C ^[1]; Tinker, S W ^[2]

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1. Union Pacific Resources, Madison, WI (United States)
2. Marathon Oil Co., Littleton, CO (United States)

The Keg River/Winnipegosis Formation is a heterogeneous hydrocarbon system composed of three oil families based upon gas chromatography of extracts from nine potential source rocks, six oil stained cores, and oils from fourteen Keg River/Winnipegosis fields. Family 1 - The 'pinnacle' play oils (North Alberta, South Saskatchewan, and North Dakota), together with Virago field (Southeast Alberta), comprise a locally sourced (upper Keg River/lower Muskeg/Ratner) family that exhibits a broad maturity range heavily dependent upon present burial depths and geothermal gradients. Family 2 - Oils from Utikima Lake, Peerless, Panny, and Senex fields in Alberta are a homogeneous, migrated oil sourced from the Duvernay Formation (upper Devonian). Family 3 - Oils from Temple field (North Dakota) and oil-stained carbonate cores of west-central Saskatchewan are of unknown source (possibly mixed Ordovician and Devonian or Mississippian). Long-distance (> 200 mi or > 320 km) oil migration routes through the thermally immature Keg River carbonates of Northeast Alberta were tracked by epi-fluorescence (E-F) study of 200 thin sections. Drill stem test (DST) recoveries and E-F oil shows demonstrate that oil migration extended northeast of the Senex area to the Keg River shelf margin. Oil migration along the shelf margin was southeast, oblique to regional structural dip. E-F shows in shelf margin strata continue southeast to the Cold Lake Weapon Range where a pre-Cretaceous dissolution event removed the overlying Muskeg halite seal. Porous carbonates of the Keg River shelf margin were possibly a migration route for oils sourcing the Cretaceous Athabasca oil sands overlying this dissolution area.

• OSTI ID: 5801862
• Report Number(s): CONF-910403--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Journal Volume: 75:3
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
023000 -- Petroleum-- Properties & Composition
58 GEOSCIENCES
580000 -- Geosciences
ALBERTA
CANADA
CHEMISTRY
CHROMATOGRAPHY
COMPARATIVE EVALUATIONS
DEVELOPED COUNTRIES
ENERGY SOURCES
ENVIRONMENTAL TRANSPORT
EVALUATION
FEDERAL REGION VIII
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
GEOCHEMISTRY
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGIC HISTORY
GEOLOGIC TRAPS
MASS TRANSFER
MATURATION
MINERAL RESOURCES
NORTH AMERICA
NORTH DAKOTA
PETROLEUM
PETROLEUM DEPOSITS
RESERVOIR ROCK
RESOURCES
SASKATCHEWAN
SEPARATION PROCESSES
SOURCE ROCKS
USA