Petroleum Geology of Saskatchewan

Melinda YurkowskiSaskatchewan Ministry of the Economy

Saskatchewan Geological Survey

Image modified fromGeoscape Southern Saskatchewan

~ 570,000 km2 of Phanerozoic coverTotal volume estimated at 687,750 km3

Oil is produced from underground reservoirs ranging in depth from 415 to 2900 meters.

Oil and Gas pools

Over 35 Formations/Members produce in SK

http://www.science.uwaterloo.ca/earth/waton/s0010.html

Insight: Oil migration and trapping

Winnipegosis

Image modified fromGeoscape Southern Saskatchewan

~ 570,000 km2 of Phanerozoic coverTotal volume estimated at 687,750 km3

Oil is produced from underground reservoirs ranging in depth from 415 to 2900 meters.

Oil and Gas pools

Over 35 Formations/Members produce in SK

PNG Producers Western Canada Sedimentary Basin

PNG Producers Western Canada Sedimentary Basin

G’

G

D’

D

SaskatchewanAlbertaD D’

2000

1000

SeaLevel

-1000

-2000

-3000

-4000metres

500

Precambrian Basement

Phanerozoic (the‘sedimentary pile’)

1000

SeaLevel

-1000

-2000

-3000metres

Precambrian BasementPhanerozoic (the‘sedimentary pile’)

Saskatchewan Manitoba

500

ManitobaEscarpment

G G’

Alberta Saskatchewan

Saskatchewan Manitoba

Image modified fromGeoscape Southern Saskatchewan

Medium

Light

Light to Medium

Heavy

Image modified fromGeoscape Southern Saskatchewan

Shaunavon

Viking

Bakken 

Mannville Heavy Oil

Mississippian 

Torquay 

3,665

0

500

1000

1500

2000

2500

3000

3500

4000

4500

1982198319841985198619871988198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012201320142015

total

Hz wells

575 To M

arch 31; 483

 hz

Saskatchewan Oil and Gas Well Drilling

13,082,610.71 

3,382,010.99 

1,174,989.63 

24,579,582.52 

2013 Hz oil Production (bbl)

19,380,561.23 

3,719,766.15 2,522,695.48 

23,140,544.80 

2014 Hz oil Production (bbl)

Viking

L Shaunavon

Torquay

Bakken SE(inc BK‐TQ)

48,763,567.66 bbl unconventional187,603,840.1 bbl total26% of all production 2014

0

20

40

60

80

100

120

140

160

180

200

Year

Light, Medium and Heavy Crude Oil Production in Saskatchewan

Crud

e Oil Prod

uctio

n (m

illion ba

rrels)

Light Oil

Medium Oil

Heavy Oil

2014 to end of December Numbers (bbls):Heavy: 73,267,266.6Medium: 40,749,594.9Light: 73,603,840.1 Total: 187,603,840.1

Number of wells drilledin 2014 that were 

put on production

Image modified fromGeoscape Southern Saskatchewan

Bakken‐Torquay

Mississippian

Shaunavon

Viking

Heavy Oil

VikingMississippian

Bakken ‐Torquay Other

Heavy Oil (primarily Mannville)

Image modified fromGeoscape Southern Saskatchewan

Viking

Viking

01/05‐33‐30‐22W3MDepth ~694.7m

• Proven initial oil‐in place ~ 2.3 billion barrels

• Recoverable Reserves based on vertical wells and waterfloodtechnology ~14 million barrels  (9 per cent)

• Over 2 billion barrels presently unrecoverable

• Shallow target (600‐700 metres) of 36° API oil

• Existing infrastructure

Viking Oil Play 

Viking Oil and Gas wells 

2009 and older

25T25

T30

T30

R28W3 R20W3 R12W3

Viking Oil and Gas wells 2009 and older

Viking Oil and Gas wells 

2009 and older

2010

T25

T30

T30

R28W3 R20W3 R12W3

Viking Oil and Gas wells 

2009 and older

2010

2011

T25

T30

T30

R28W3 R20W3 R12W3

Viking Oil and Gas wells 

2009 and older

2010

2011

2012

T25

T30

T30

R28W3 R20W3 R12W3

Viking Oil and Gas wells 

2009 and older

2010

2011

20122013

T25

T30

T30

R28W3 R20W3 R12W3

Viking Oil and Gas wells 

Viking Oil and Gas wells 2009 and older

2010

2011

20122013

2014 & 2015

T25

T30

T30

R28W3 R20W3 R12W3

Image modified fromGeoscape Southern Saskatchewan

Bakken

Bakken and Torquay

Mississippian

Torquay

Bakken‐Torquay

Mississippian – Torquay Stratigraphy

T1

T10

T15

Viewfield

Ryerson

Flat Lake, Northgate

Viewfield

Middle Bakken

Upper Bakken

Lower BakkenTorquay

Birdbear

RyersonFlat Lake

Torquay Trapping

Mississippian

0

50

100

150

200

250

300

350

400

450

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

3,000,000

3,500,000

4,000,000

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

PRD Monthly OIL (Bbl)PRD Well Count

Torquay and Bakken‐Torquay ProductionBb

l

Total oil production10,784,325 bbls