mannville sedimentology and resources assessment · resources assessment january 2016 • executive...
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Mannville Sedimentology and Resources AssessmentJANUARY 2016
• 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.
Stratigraphic Framework
Mannville Stratigraphy, West Central Saskatchewan
Focus of Study
McLaren-Waseca Type Log
Upper McLaren Chronostratigraphy-Core Data
McLaren-Waseca Type Core Log ; McLaren BTU and Waseca Low Stand
Off Channel, Valley Fill Parasequences
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
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’
McLaren and Waseca Channel Parasequences
Waseca Channel Lithofacies, Form Map and Stratigraphic Channel Transect
Channel Para-sequences, Stratigraphic Strike Section
AAAA
BBBBB
C
C
C C
Waseca
W1
W2
Colony
Datum; Onset of Flooding
W3
NW SE
Facies Maps
Waseca Net Sandstone Isopach
010
20
10
0
CI= 10m
McLaren Net Sandstone Isopach
0
0
0
0
0
5
5
5
5
10
10
10
10
CI= 5m
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
U Mannville Channel Systems
CI= 10m
Waseca Channel
McLaren Sandstone Filled Tidal Channel
Mud Filled Channel
Waseca Channel
U Mannville Channels- Stratigraphic Cross Section
Pseudo-Seismic Transects
Differential Compaction Over Waseca Channel Thick
SW NE
Off Channel and Channel Facies Transect, NW Pool
Hydrocarbon Trap
Evolution of the Mannville Stratigraphic Hydrocarbon Trap
1
1
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