Saskatchewan Oil Hot Plays Melinda Yurkowski, P.Geo

Transcription

1 Saskatchewan Oil Hot Plays Melinda Yurkowski, P.Geo Saskatchewan Geological Survey Saskatchewan Ministry of Energy and Resources April 18, 212

2 ~ 7, km 2 of Phanerozoiccover Total volume estimated at 6877 km 3 Over 3 Formations/Members produce Oil and Gas pools Depth of reservoirs ranging in depth from 41 to 29 meters.

3 HUDSON BAY ALBERTA BASIN ALBERTA MANITOBA EDMONTON SASKATCHEWAN PRINCE ALBERT SASKATOON CALGARY REGINA WINNIPEG MONTANA Arch HELENA Sweetgrass BRANDON WILLISTON BASIN BISMARCK NORTH DAKOTA PIERRE WYOMING SOUTH DAKOTA

4 Viking Shaunavon Bakken Birdbear Hot Plays.

5 Bakken. Bakken Image modified from Geoscape Southern Saskatchewan

6 From: The Encyclopedia of Saskatchewan at

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8 Bakken Stratigraphy

9 Bakken Depositional Model: ProgradingDelta: Forced or Normal Regression? 1.) Unit A deposited in a prograding, regressive setting 2.) Continued regression and erosion of Unit A proximal prodeltadeposits, and deposition of the unit B delta-front sediments. 3.) Unit C deposited in a transgressive setting

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11 T1 T2 T3 T4 T T6 T7 T8 T9 T1 T11 T12 T13 T14 T1 T16 T1 T2 T3 T4 T T6 T7 T8 T9 T1 T11 T12 T13 T14 T1 T16 R3W1 R31 R32 R33 R34 R1W2 R2 R3 R4 R R6 R7 R8 R9 R1 R11 R12 R13 R14 R1 R16 R17 R18 R19 R2 R21 R22 R23 R24 R2 R3W1 R31 R32 R33 R1W2 R2 R3 R4 R R6 R7 R8 R9 R1 R11 R12 R13 R14 R1 R16 R17 R18 R19 R2 R21 R22 R23 R24 R2 m 1m 2m 3m 4m m 6m 7m 8m 9m 1m 11m 12m 13m 14m Horseshoe pattern Viewfield Contour Interval = m Bakken Producing Wells Kilometres Unit B Isopach

12 Viking. Image modified from Geoscape Southern Saskatchewan

13 Viking Isopach Viking Production W3 2W3 2W3 1W3 1W3 W3 3W2 2W2 2W2 1W2 1W2 W2 34W1 3W

14 Viking 1/ W3M 694.7m Viking Oil Play Complex Geology: Cretaceous fine grained sandstones and highly bioturbatedmuddy sandstones; highly bioturbated; multiple sea level rises and falls, regressive surfaces of erosion merging with transgressivesurfaces of erosion Oil Density: 84 KG/m 3 (API ~ 36 ) Light Oil Production since 19 s -Oil recovery factors are low (-1%), but has a large oil-in-place potential Production Since 27 over 866 horizontal wells with, multi-stage hydraulic fracturing drilled in areas of the reservoir where it was thought to have been depleted through vertical wells

15 T3 T3 T2 AB SK R2 R2 R1W3

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17 Viking Opportunities Proven initial oil-in place: 2.3 billion barrels Recoverable Reserves based on old school technology (vertical wells and waterflood): 214 million barrels (9 per cent) Over 2 billion barrels presently unrecoverable Shallow target (6-7 metres) of 36 API oil Existing infrastructure

18 Shaunavon. Image modified from Geoscape Southern Saskatchewan

19 W3 USHVN coquina ShaunavonReservoirs W3 L SHNVN moldic porosity ShaunavonFormation production occurs along a linear trend (ShaunavonOil Field Trend), which extends from Township 2-18 with most of the production centered around Ranges 18-2 West of the Third Meridian Initially renewed interest targeted the lower member, but now a lot of the interest has shifted back to the upper member, as well as the opportunity for multi zone production (both upper and lower) W3 USHVN xbedded sst In the last five years, horizontal wells in the Shaunavonhave produced around 12.3 million barrels of oil, and over 4 wells were drilled to exploit the clastic/carbonate upper member of the formation.

20 Upper ShaunavonOil Play Isopach Upper Shaunavon The Shaunavon: Mixed siliciclastic-carbonate reservoir shallow marine (coquina), and clasticchannel deposits To the end of 211, there have been 2,748 wells drilled into and at some time produced from the Shaunavon. Total production is around 387 million barrels of 22 API oil. Production as of May 211 is approximately 37 million barrels (9.6x1 6 m 3 ), accounting for 99% of the production from the Shaunavon Formation Typical porosity is 1-2%; permeability varies from generally 1md to greater than a Darcy

21 Isopach Lower Shaunavon Carbonate reservoir oolitic& fossiliferousshoals found in upper few metres porosity is vuggy to mouldic Porosity ranges from 1-28%; permeabilitiesfrom core analysis range from generally less than a millidarcy, but can be up to 64md Since 27, over 21 horizontal wells have been drilled into the low permeability reservoirs of the Lower Shaunavon, with production totaling over 4.26 million barrels

22 Birdbear. Image modified from Geoscape Southern Saskatchewan

23 Sub-Mesozoic Unconformity SubcropMap near Unity Saskatchewan

24 Pay Zone of well W3 subcropplay of wireline and core Perf. Zone 7m-73m Picture taken at 71.m Porosity ranges from 1-24%, average 2% K9 Permeability as high as 37mD Cumm. Production 1,1 bbl. of API 12 oil

25 Thin sections Well: W3 inter-particle porosity enhanced porosity by dissolution 3mm field of view 1.3mm field of view

26 Pay Zone of well W3 Off-bank play wireline and core Perf. Zone 91.m-913.m Picture taken at 911.m Porosity ranges from 11-27%, average 19% K9 Permeability as high as 173 md Cumm. Production 17,6 bbl, of API 9.6 oil

27 Number of Wells Drilled in the last five years that have Oil Production

28 Number of Wells Drilled in the last five years that have Oil Production

29 Saskatchewan Workhorses. Mississippian & Mannville

30 Cumulative Oil Production by 211 (Million Cubic Metres) Current Monthly Oil Production (Oct. 211) (Cubic Metres) 1, 2, 3, 4, Midale Bakken Sparky 69.4 Midale Roseray 66.2 Sparky Frobisher-Alida 6.7 Waseca Waseca 7.2 Viking Bakken 6.9 Cumming 964 Upper Shaunavon 6.8 Frobisher Frobisher 42.9 Frobisher-Alida Viking 27. Rosery 7844 Alida 21. Colony 6136 Tilston 17. General Petroleums 16.3 Lloydminster 1.2 Basal Mannville 1. Mclaren13.7 Cantuar12.9 Mannville12.7 Cummings12. Ratcliffe11.3 Dina1. All Mississippian Million Cubic Metres All Mannville 23.4 Million Cubic Metres U. Shaunavon 618 G.P. 689 Manville 336 Mclaren 4762 Shaunavon Cumming/Dina 446 Lloydminster Tilston36296 L. Shaunvon3431 Alida3217 All Mississippian -1,476 Cubic Metres All Mannville 777,673 Cubic Metres

31 Mississippian Subcrop Map

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33 Intriguing plays.

34 Cumulative Oil Production by 211 (Million Cubic Metres) Current Monthly Oil Production (Oct. 211) (Cubic Metres) 1, 2, 3, 4, Midale Bakken Sparky 69.4 Midale Roseray 66.2 Sparky Frobisher-Alida 6.7 Waseca Waseca 7.2 Viking Bakken 6.9 Cumming 964 Upper Shaunavon 6.8 Frobisher Frobisher 42.9 Frobisher-Alida Viking 27. Rosery 7844 Alida 21. Colony 6136 Tilston 17. General Petroleums 16.3 Lloydminster 1.2 Basal Mannville 1. Mclaren13.7 Cantuar12.9 Mannville12.7 Cummings12. Ratcliffe11.3 Dina1. All Mississippian Million Cubic Metres All Mannville 23.4 Million Cubic Metres U. Shaunavon 618 G.P. 689 Manville 336 Mclaren 4762 Shaunavon Cumming/Dina 446 Lloydminster Tilston36296 L. Shaunvon3431 Alida3217 All Mississippian -1,476 Cubic Metres All Mannville 777,673 Cubic Metres

35 Number of Wells Drilled in the last five years that have Oil Production

36 Red River Producers T1 R2 R1 R1W2

37 1 2 ' 1 3 ' 1 4 ' 7 ' 6 ' Kilometres Kilometres Miles Miles 1 9 ' 11 ' 1 ' 1 7 ' 1 8 ' 16 ' 7 ' ISOPACH MAP OF THE RED RIVER STRATA IN IN SASKATCHEWAN 6 ' Contour Interval = m PETROLEUM GEOLOGY BRANCH Flin Flon ' 4 ' Regina Weyburn Estevan ' 1 13 ' 4 ' ' 3 2 ' 23 1 ' 12 ' 49 ' 8 W 1 8 MANITOBA Township Yorkton 7 31 S O U T H E R N E D G E O Ile-a-la-Crosse R La Ronge F P R E C A M B I A ' N S H I E L D 64 R P M E N T 63 1 K E E S C A 62 L A M E A D O W 61 6 Meadow Lake ' Lloydminster Prince Albert 47 3 ' 46 Hudson Bay 4 Melfort North Battleford Saskatoon ' ALBERTA ' Township Moose Jaw Swift Current ' ' ' ' 1 ' 1 4 ' To June 211, Red River reservoirs have produced 4 million m 3 (2.2 million bbls) of oil from 21 wells; average single well production is 2 x1 m 3 (12.8 million bbls). remain under-explored with only 674 wells penetrating the Red River in southeastern Saskatchewan (Tp1-23; Rge3W1-3W2). 1 6 ' 1 7 ' 1 8 ' MONTANA NORTH DAKOTA Range W 2 W 3

38 3 Types of Reservoirs: Longview Flat Lake W2 387m Laminated dolomicritereservoir in LONGVIEW FLAT LAKE (used to be Lake Alma 1-14): produced 44,291 m 3 oil, 78,3 m 3 water in 77 DOP from 1963 to 26. Longview et al Midale V1U W2 Transitional facies. include oolitic grainstones, bioclastic grainstones/packston es, and thromboid and stromatoporoid boundstones. This well has produced m 3 oil and m 3 of water in 424 DOP to Jan. 1, 212.

39 3 Types of Reservoirs: NRK Minton 2HZ 1A D W2 Yeoman burrowmottled dolostone (Tyndall Stone equivalent) - produced 421,39 m 3 of oil and 133,27 m 3 of water in 3162 DOP to Jan. 1, 212 (from Yeoman faciesas well as the transitional and Lake Alma facies).

40 Petroleum Geologists SGS

41 Thank you!