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Mannville Sedimentology and Resources AssessmentJANUARY 2016
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• Executive Summary• Regional Setting• Exploration History• Seismic Data Base• Stratigraphy and Sedimentology• Hydrocarbon Trap• Reservoir Characterization• Seismic Modeling and Interpretation• Prospect Areas
• Prospect Transects• Volumetrics• Decline Curve Analysis• Type Curve Economics• Development Locations and Field Development Plan
• Appendix 1- Decline Curve Anaolgue Data• Appendix 2- Production Analogue • Appendix 3- Core Logs and Photo’s
Table of Contents
This sample report contains discussion of the Stratigraphy and Sedimentology from was an integrated study prepared for a domestic oil and gas company. Sensitive data, such as project location, reserves, etc have been removed from the original. Non-original figures were referenced in original.
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Stratigraphic Framework
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Mannville Stratigraphy, West Central Saskatchewan
Focus of Study
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McLaren-Waseca Type Log
Upper McLaren Chronostratigraphy-Core Data
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McLaren-Waseca Type Core Log ; McLaren BTU and Waseca Low Stand
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Off Channel, Valley Fill Parasequences
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The ‘Tidal Channel Type Well’ Has a cyclical fining upwards and interbedded log profile. This is a late McLaren channel that incises into the Waseca channel fill facies. In this section, the McLaren channel is shown cutting into off Waseca channel mudstone and shales
West EastO O’
Correlation of Mudstone Markers in Off Channel Facies- Cross Section O-O’
Tidal Channel Type Well
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West East
This cross section illustrates the stratal relationships between the two channel system; Waseca sand fluvial bar ssts and McLaren mud rich tidal channels. It is believed the off channel Waseca floodplain/overbank deposits are contemporaneous with the Waseca point bars. The McLaren tidal channel appears to be a young channel system, deposited in an overall mud rich transgressive setting
P P’
McLaren Waseca Valley Fill Lithofacies Stratigraphic Section P-P’
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McLaren and Waseca Channel Parasequences
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Waseca Channel Lithofacies, Form Map and Stratigraphic Channel Transect
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Channel Para-sequences, Stratigraphic Strike Section
AAAA
BBBBB
C
C
C C
Waseca
W1
W2
Colony
Datum; Onset of Flooding
W3
NW SE
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Facies Maps
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Waseca Net Sandstone Isopach
010
20
10
0
CI= 10m
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McLaren Net Sandstone Isopach
0
0
0
0
0
5
5
5
5
10
10
10
10
CI= 5m
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Highstand McLaren Mud Filled Tidal Channel and Net Sandstone Isopach
0
0
0
0
0
5
5
5
5
10
10
10
10
CI= 5m
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U Mannville Channel Systems
CI= 10m
Waseca Channel
McLaren Sandstone Filled Tidal Channel
Mud Filled Channel
Waseca Channel
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U Mannville Channels- Stratigraphic Cross Section
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Pseudo-Seismic Transects
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Differential Compaction Over Waseca Channel Thick
SW NE
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Off Channel and Channel Facies Transect, NW Pool
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Hydrocarbon Trap
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Evolution of the Mannville Stratigraphic Hydrocarbon Trap
1
1
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The McLaren Tidal Channel- the Key Stratigraphic Trap Component
0
CI= 10m
Hydrocarbon contacts in the two pools indicate distinct O/W contacts with a 10m difference. This is controlled by mud filled McLaren cross cutting, mud filled channels. This is a common phenomenon in McLaren analogue producing pools.
The Waseca channel is also an important factor in trap formation. The thick channel sequence forms the ‘structural foundation’ that creates differential compaction in non-channel areas
Waseca Channel Axis-The structural foundation