Third level Play Fairway Analysis - Department of Energy ... · – Several source rocks (terrestrial/marine) – & regional marine EJ • Multiple reservoir possibilities – Major

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»  Fifth level Play Fairway Analysis Seminar - summary

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Synthetics/Data Conditioning/ base maps/reports and

wells

Play Fairway Analysis - Workflow

Bible Line Reprocessing

Sedimentology

PFA Project - BEICIP External Contractors Halifax academic/GSC

Source Rock identification and type

Thermal Evolution of basin

Oil typing from seeps and shows

Vitrinite Reflectance

Fluid Inclusions

Rock Eval

AFTA

Geochemistry Project

Bio Stratigraphy

Plate Tectonics Project

Seismic Reprocessing Refraction Line SISMAR Reprocess

Beaumont forward Model

GSC/Sibuet Reconstruction

Grav Mag Reprocessing

Plate Tectonics – 3D Basin Evolution Model

Louden Integ Interpretation

Seismic interpretation

Strat Model

GDE maps

CRS mapping

Petroleum systems

Volumes & Risks

Build database

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Database

•  ~70000 km 2D •  ~30000 sq km 3D •  20 key wells – Std Log suite •  + ~90 other wells •  Biostratigraphy data •  Synthetic seismograms •  Variable spatial distribution

11-11-22 4

Jurassic carbonate bank

Cretaceous

delta

Jurassic

delta

Deep offshore area Albatross-B13

Shelburne_G-29 Bonnet P-23

Shubenacadie_H-100

Glooscap_C-63

Cohasset_L-97

Alma_F-67 Glenelg_J-48

Chebucto_K-90

Evangeline_H-98

Newburn_H-23 Weymouth_A-45

Annapolis_G-24 Crimson_F-81

Tantallon_M-41

Dauntless_D-35 West Esperanto_B-78 Hesper_P-52

South_Griffin_J-13

Balvenie_B-79

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Summary

•  Rifting History •  Reservoir prediction •  Geochemistry •  3D petroleum systems •  Play maps & Yet To Find •  Key messages •  Risks (comments)

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Central Atlantic between FZ Pico-Gloria and 15°20’-Guinea. In red, ECMA and WACMA (Labails, 2007, thesis). In green, Mezozoic magnetic anomalies.

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Rifting model - KEY CONCLUSIONS

•  Nova Scotia / Morocco are conjugate volcanic passive margins

•  Sub-aerial spreading initiated by CAMP event in the Earliest Jurassic

•  Salt basins confined to continental crust stretched in Late(?) Triassic

•  Early post rift water depths < 200m (anoxic conditions - ? a new petroleum system)

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Reservoir de-risking

•  Several major sediment entry points –  Sable system –  Mohican graben (clastic or calsi-turbidites) –  Mohawk graben (clastic or calsi-turbidites) –  Shelburne delta (newly identified)

•  Reservoir presence & distribution can be de-risked –  Understanding paleo slope morphology is key –  3D imaging –  Shelf to slope attribute analysis

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Source rocks

S

S S

S

S

5 source rock intervals 2 major source rocks Tithonian mixed terrestrial/marine Pliensbachian restricted marine

Potential for rich petroleum systems

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Source Rocks Modeling – Transformation Ratio

TITHONIAN SR APTIAN  SR  

VALANGINIAN  SR  TITHONIAN  SR  CALLOVIAN  SR  

PLIENBACHIAN  SR  

% TRANSFORMATION

RATIO

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Pliensbachian Transformation ratio

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Barremian sands play (1)

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Albian sands play (1)

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Resource estimate Subzones defined on the basis of geological concept, and on exploration concerns. There is no wells drilled in Basin Zones (in blue). The limit with Platform Zones (in yellow-brown) is close to the isobath 2000 m.

Most of the discoveries are in the Zone 3

à  ~ 120 TCF Gas à  ~ 8 Bnbbls oil à  Unrisked à  In place

à ~ 3-5% of expelled HC

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0

5

10

15

20

25

30

35

ZONE  1 ZONE  3 ZONE  5 ZONE  6 ZONE  4 ZONE  2

14

35

27 26

16

4.2

GAS  v

olum

e  in  Tcf  (surfa

ce  co

ndition

)

ZONE  RANKING  by  GAS  volume  IN  PLACEGRAND  TOTAL  (unrisked)

All  Plays  (in  Tcf)

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

ZONE  1 ZONE  3 ZONE  5 ZONE  6 ZONE  4 ZONE  2

0.5

1.4

1.8

1.10.9

0.1

GAS  v

olum

e  in  Tcf  /  km

2(surface  co

ndition

)

ZONE  RANKING  by  GAS  volume  IN  PLACEPER  AREA  (unrisked)All  Plays  (in  Gcf  /  km2)

0

20

40

60

80

100

120

ZONE  1 ZONE  3 ZONE  5 ZONE  6 ZONE  4 ZONE  2

92

46

112

4554

25

GAS  v

olum

e  in  10

3bb

l  /  km

2(surface  co

ndition

)

ZONE  RANKING  by  OIL  volume  IN  PLACEPER  AREA  (unrisked)

All  Plays  (in  103 bbl  /  km2)

0

500

1000

1500

2000

2500

ZONE  1 ZONE  3 ZONE  5 ZONE  6 ZONE  4 ZONE  2

2470

1130

1650

1090 990820

GAS  v

olum

e  in  Mbb

l  (surfa

ce  co

ndition

)

ZONE  RANKING  by  OIL  volume  IN  PLACEGRAND  TOTAL  (unrisked)

All  Plays  (in  Mbbl)

0

50

100

150

200

250

300

350

400

ZONE  1 ZONE  3 ZONE  5 ZONE  6 ZONE  4 ZONE  2

160

250

370

210180

40

GAS  v

olum

e  in  10

3bb

l  /  km

2(surface  co

ndition

)

ZONE  RANKING  by  OIL  EQUIVALENT  volume  IN  PLACE

PER  AREA  (unrisked)All  Plays  (in  103 bbl  /  km2)

0

1000

2000

3000

4000

5000

6000

7000

ZONE  1 ZONE  3 ZONE  5 ZONE  6 ZONE  4 ZONE  2

4400

63005500

5000

3300

1400

GAS  v

olum

e  in  Mbb

l  (surfa

ce  co

ndition

)

ZONE  RANKING  by  OIL  EQUIVALENT  volume  IN  PLACE

GRAND  TOTAL  (unrisked)  All  Plays  (in  Mbbl)

Ranking of the different zones

Zone 3 - 1/3 discovered mmbbls)

Oil

volu

me

in m

mbb

ls (s

urfa

ce c

ondi

tions

)

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Resource estimate – unrisked/in place

HC expelled from a deeper source rock

TRAP 2

TRAP 1

DRAINAGE AREA OF TRAP 1

DRAIN and PETPOT Concept

à  3D TEMIS petroleum systems approach

à  Only simple closed structure (4 ways traps > 2 sq km)

à  More complex traps not considered

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Tantallon

Hauterivian MFS depth map

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Shelburne

Albatross

Mohican Shuben Hauterivian MFS depth map

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Example lead volume

Key Assumptions

•  Closed structure exists •  P50 area = 40 km2

•  P50 oil pay = 70 m

Unrisked OOIP

•  Mean = 1.6 Billion Bbls

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Key messages

•  Multiple proven petroleum systems –  Several source rocks (terrestrial/marine) –  & regional marine EJ

•  Multiple reservoir possibilities –  Major proven delta (Sable) – north –  Clastic input along margin and south west –  Carbonate bank

•  Substantial resource (~120 TCF + 8 bnbbls) –  ~3-5% of expelled hydrocarbons

•  Potential for rich petroleum system •  Multiple plays

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Risks

•  Charge –  Proven in East –  Model risk in West (extent of EJ source)

•  Reservoir –  Extensive regional evidence for presence –  Distribution - detailed seismic stratigraphy & attribute

analysis •  Traps

–  Multiple possibilities in shallow & deep water –  Detailed structural mapping

•  De-risking - 3D seismic