thicker sand in lower shoreface: facies 2a distal...
TRANSCRIPT
A
A'
Thicker Granite Wash-like Sands
Below BHL Sandstone Sequence.
Exemplified by Cored Well 8-15-78-23W5
With Erosional Boundary Between the Two Sands.
Amalgamated
Two Cycles?
BHL SST over G
R Wash-lik
e ?
StructuralHigh?
?
?
?
Lower Shoreface
Asymmetrical Shoreface Bar, As Responseto NE to SW Longshore Drift
(schematic only)SW NE
Longshore DriftLongshore DriftMiddle
Shoreface
Offshore Transition
Offshore
F.2B
F.1BF.1A
F.2A
F = FaciesSubtle Structural
Control ?
ND
ND
ND
ND
ND
ND
ND
Structurally
Low/Deeper ?
- Greater
Accomodation
Space for
Two Cycles?
Two L-MShoreface
Cyclesin This Area
Conceptual Only:
Longshore/Shoreface
Bars; Orientation
Unknown, Assumed
NE-SW
Two L-M ShorefaceCycles Amalgamated,With PebbleLag Between
Increasing OpenMarine Influence:
Increasing Bioclasts- Crinoids, Brachs -
in Lower/MiddleShoreface Sands
Variable/ThickerSands Below
BHL SST Sequ.Eg.
Thicker Lower-Middle Shoreface: Facies 2A, 2BAsymmetricShoreface
Bar?
Thin, VariableOffshoreTransition:Facies 1B
Probable Offshoreto Thin OffshoreTransition:Facies 1A, 1B
Lee-Side Embayment
Distal Offshore
Distal Offshore
Distal Offshore
Offshore Transition± Thin Lower Shoreface
‘Anchored’to Structural
High
AsymmetricShorefaceBar?
Middle Over Lower Shoreface to 2.3 m: Facies 2A, 2B
Variable,Generally Thicker(to ≈ 1.5m)Offshore TransitionFacies 1B
Multiple InternalErosional Eventsin BHL SST
Eroded/Thinned Offshore Transition(Facies 1B): Eroded BelowRSME* at Base of Upper
Shoreface (Facies 3)
Thin Offshore/Offshore Transition:Facies 1A, 1B
Westward Increase in ThinSandstone Event Bedsof Offshore Transition: Facies 1B
Thicker sand in Lower Shoreface: Facies 2A(60 cm)
Inferred Longshore(Wind-wave) DriftDriven by NE Trades
*RSME: Regressive Surfaceof Marine Erosion
N
S
W EProjected System
DatumCentral Meridian
1:130,000
Schematic summary of offshoreto lower and middle shorefacesands of the BHL sandstone sequencein the Gerouxville East-Normandvillearea (Facies 1A, 1B, 2A, 2B)Structural high in 18-78-21W5appears to have influencedshoreface sedimentation. Longshoredrift is inferred to have been a majortransport and deposition mechanism
ND: No well data > 4 sections
Study or Project Name
Fig. 27
Project:
File Name:
Last Edited:
Copyright © 2007 Canadian Discovery Ltd. All Rights Reserved.24 23 22 21 20 19W5
78
77
76
75
79
Canadian DiscoveryLtd.
Beaverhill Lake Sandstone Oil PlayPeace River Arch – Northwestern Alberta
� Large Reserves & High Productivity Potential
� By-Passed Pay Zones
A Significant Under-Explored Light Oil Play
The Devonian section along the southern margin of the Peace River Arch has
historically been explored for reservoirs ranging from Granite Wash to Wabamun.
Galleon Energy and others have recently obtained astonishing light oil rates of
thousands of boe/d at Puskwaskau from under-explored sands in the Beaverhill
Lake Group, where most exploration has focused on Slave Point carbonate
reefs. These sands are interbedded in the overlying Waterways argillaceous
limestone and shale section, and have been systematically explored only since
the first significant light oil discovery at Girouxville in 1998. The potential of these
conventional stratigraphic reservoirs has been long overlooked, but is now the
object of increasing industry attention, motivated by oil scarcity and associated
record prices.
The Beaverhill Lake Sandstone study includes detailed correlation sections, regional
and local mapping, pool analysis, bypassed pay appraisal, depositional framework
and detailed stratigraphic assessments leading to environments of deposition and
reservoir prediction. The depositional model was developed by Graham Davies
of GDGC. Graham has wide experience with both sandstone and carbonate
reservoir facies in Canada and internationally. Detailed core descriptions are an
integral part of the study. The geological model has been further enhanced by
seismic data. The Klesk/Puskwa template, supplied by SilverTip Surveys Ltd.,
has survey lines across Galleon Energy’s new discovery at Puskwa. The Girouxville
template survey, supplied by Breaker Energy Ltd., provides additional insights
in the Girouxville area.
Image above: Excerpt from schematic facies diagramCanadianDiscoveryLtd.
Study DetailsStudy Area T. 69–83, R. 15W5–5W6
Key Statistics
Wells in Database 813
Detailed Core Descriptions 41
Thin-Sections 40
XRD Analyses 2
Fluid Inclusion Analyses 2
Technical Illustrations 76
Regional Cross-Sections 8
GIS Maps 21
Montages 2
Study Objectives
� Develop a depositional model for the Beaverhill
Lake sand
� Determine reservoir thickness and distribution
� Determine prospective play fairways and build a
framework for prospect generation
Study Applications
Subscribers will be able to utilize this report for mineral
rights acquisition, for project and resources planning
and for prospect generation.
Images, clockwise from top: Sample core description. Aeromagnetic map. Reference log. Waterways-BHL sandstone boundary with transgressive marine lag of tabular stroms, crinoids and brachiopods in an argillaceous host.
Images, left to right: Beaverhill Lake sand stratigraphy. Medium-grained feldspathic sandstone (subarkose) with selectively leached K feldspars (arrows).
200 m
200 m
E
EJ
JIIIIEEIJ
EJJEEJJEJ
EEEEJJJEEEEJJEJJEEEJEJ
JEEJEEEEJEJJEEJJJ
JEEEEEEJEEEJIJEEJEJ
IEJEJJI
EE
EE
E
E
IIEJ
E
EEEEEEE EE
E
EEE E
EEEEEIJ
E
EEEEEEEEE EEEEE
EEEEEJ EE EE
E EEE
JJ
I
J
J
T73
T69
T78
T83
T88
T73
T78
T83
T88
R20R25 R15W5R1W6R5
R11W5R16R21R1W6R6
Girouxville East Play
Kleskun Play
Puskwaskau Play
6-32 'show' 1100 bopd
400 bopd 1375 boepd35 bopd
25 bopd
avg 193 bopd
avg 163 bopd
avg 187 bopd 221 bopdGirouxville Play
Normandville Play
SNIPE LAKE
PEACE RIVER ARCH
Seeker 2004
Devon 2002
Duvernay 2003
Galleon 2006
Galleon 2006
Galleon 2005
Girouxville Template Survey
Klesk / Puskwa Template Survey
Beaverhill Lake Sand Play Fairway
Beaverhill Lake Oil Completion
Duvernay to Precambrian Isopach (m)Contour Interval = 20 m
J
Deliverables (Hard Copy and Digital)
Technical Report
� Comprehensive technical report
� Technical illustrations including macro and thin-section
photos, schematic maps and cross-sections, reference
logs, log cross-plots and diagenetic-related schematics
� Digital database of tops, isopachs and reservoir
characteristics
GIS Maps
� Beaverhill Lake Sandstone pool map
� Database maps – core data, production, perfs, DSTs (2)
� Aeromagnetic and Bouguer Gravity maps (3)
� Precambrian, Slave Point, Beaverhill Lake Sandstone and
Waterways structure and trend maps (10)
� Waterways, Slave Point and Granite Wash Isopach maps (3)
� Beaverhill Lake Sand gross sand and net porous sand
isopach maps (2)
Montages
� Schematic core montage
� Play concept montage
Cross-Sections
� Detailed log-core cross-sections (2)
� Regional stratigraphic and structural cross-sections (6
Appendices – Sedimentology
� Detailed core descriptions (41)
� Core photos and descriptions (100’s)
Appendices – Geophysics
� Selected seismic profiles and base map for the Klesk/
Puskwa Template Survey (SilverTip Surveys Ltd.)
� Selected seismic profiles, plots, log and base map for the
Girouxville Template Survey (Breaker Energy Ltd.).
Image above, large: Excerpt from Girouxville seismic line. Above, small: Beaverhill Lake oil completions – areas of activity and initial production rates.
Westcoast et al Girouxville 4-214-21-77-23W5
Dry and Abandoned
Tethys et al Girouxville E 1-61-6-77-22W5
Pumping BHL OilIP: 197 bopd, 187 mcf/d, 116 bwpdPP: 166 bopd, 98 mcf/d, 39 bwpd
Cum: 73 mbbls oil, 43 mmcf gas, 25 mbbls water
Tethys et al Girouxville E 12-3212-32-76-22W5
Pumping BHL OilIP: 193 bopd, 70 mcf/d, 0 bwpd
PP: 480 bopd, 281 mcf/d, 0 bwpdCum: 298 mbbls oil, 152 mmcf gas, 5 mbbls water
A'ANW SE
Formation of the Beaverhill Lake Sand pools at Girouxville started with deposition of clastic sediments into an area where deeper water carbonate sediments were the norm. This illustration depicts what the area might have looked like, but it also suggests the enormous
potential for other prospects around the Peace River Arch.
www.canadiandiscovery.comBHSS-V04-2015.07.16
Contact Client Relations300, 706 – 7 Avenue SW, Calgary AB, T2P 0Z1 T 403.269.3644 E [email protected]
Subscription Details
Study Cost: $37,500
Base price includes the report in both hard copy and digital
formats. GIS files are available for a nominal fee.
Core Workshops
To date, Graham Davies has conducted a number of core
workshops in support of the study. Details and rates are
subject to availability and interest.
Images, top to bottom: Beaverhill Lake sand cross-section. Beaverhill Lake sand depositional model, suggesting the enormous potential for new prospects around the Peace River Arch.
In partnership with:
CanadianDiscoveryLtd.
GRAHAM DAVIES
CONSULTANTS LTD.
GEOLOGICAL
GDGC