A presentation from Jared VanMeter from Range Resources showing maps and background information on the emerging Upper Devonian Shale formation--a layer of shale that sits a few hundred feet above the Marcellus Shale in the northeastern U.S. Range and several other drillers are now targeting the Upper Devonian, part of a "stacked play" strategy that includes drilling three layers in the same well: Upper Devonian, Marcellus and Utica.
2. INFLECTION POINT
Regional Mapping and Reservoir Analysis of the
Upper Devonian Shale in Pennsylvania
“An event that results in a significant
change in the progress of a company.”
-Investopedia
3. Introduction
The Upper Devonian Shale has produced gas since 1980s in West Virginia
Vertical wells targeting fractures were hit and miss in low pressure area.
Since then organic packages, above and below the Marcellus attracted industry
interest
Advances in drilling and multistage fracture technology in Marcellus and
Barnett Shale have made this possible
Upper Devonian Shale is a viable economic play
Stacked potential reservoir over a widespread area
Currently being tested by industry
2009 Range produced from the first horizontal Upper Devonian Shale well in
Pennsylvania
The main purpose of this investigation is to define and map distribution of
organic-rich facies in various Upper Devonian Shale intervals above Tully
Limestone
4. Stratigraphy of Pennsylvania
0
Southwestern PA – Central PA
Cashaqua Shale
Penn Yan Shale
Burket Shale
Middlesex Shale
Rhinestreet
Shale
Tully Limestone
Mahantango Shale
Marcellus
Shale
Onondaga
Limestone
Cashaqua Shale
Northwestern PA
Rhinestreet
Shale
Tully Limestone
Mahantango Shale
Marcellus
Shale
Onondaga
Limestone
Central PA - Northeast PA
Cashaqua Shale
Penn Yan Shale
Burket /Geneseo
Shale
Tully Limestone
Mahantango Shale
Marcellus
Shale
Onondaga
Limestone
5. 4
Regional Log Signatures of Upper Devonian Shale
Rhinestreet Shale
Cashaqua Shale
Northwestern PA
0 300
Cashaqua Shale
Penn Yan Shale
Burket Shale
Middlesex Shale
Rhinestreet Shale
Southwestern PA – Central PA
0 300
Cashaqua Shale
Penn Yan Shale
Burket / Geneseo
Shale
Central PA - Northeast PA
0 300
2
1 1
8. Burket Shale Gross Thickness
C.I.= 10ft
2200 120
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
Burket Shale
9. Burket Net Thickness greater than 160 API
C.I.= 10ft
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
1600 80
Burket Shale
10. Burket Net Thickness greater than 200 API
C.I.= 5ft
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
600 30
Burket Shale
11. Penn Yan Shale Gross Thickness
C.I.= 20ft
Cashaqua
Penn Yan
Burkett
Middlesex
Rhinestreet
Tully
Strat Column
5000 250
12. Genesee Group Gross Thickness
C.I.= 20ft
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
6000 300
13. Middlesex Gross Thickness
C.I.= 10ft
Westward shift
of depocenter
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
1200 60
14. Middlesex Net Thickness greater than 160 API
C.I.= 5ft
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
350 20
15. Middlesex Net Thickness greater than 200 API
1
2
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
300 15
16. Cashaqua Gross Thickness
C.I.= 20ft
Two Clastic Influx
Sources
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
5600 280
17. Rhinestreet Gross Thickness
C.I.= 20ft
Westward shift
of depocenter
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
4000 200
18. Rhinestreet Net Thickness greater than 160 API
C.I.= 10ft
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
2000 100
19. Rhinestreet Net Thickness greater than 200 API
C.I.= 5ft
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
700 35
20. Total Upper Devonian Shale Gross Thickness
1
2
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
20000 1000
21. Total Upper Devonian Shale Net Thickness greater than 160 API
C.I.= 10ft
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
2800 140
22. Total Upper Devonian Shale Net Thickness greater than 200 API
Cashaqua
Penn Yan
Burket
Middlesex
Rhinestreet
Tully
Strat Column
700 35
23. 22
Upper Devonian Shale Activity Map
1 2
The first reservoir fairway has a
stacked potential of 2 main
reservoir packages: 1) Burket and
Middlesex, and 2) Rhinestreet
The second reservoir has a
thickened Burket, but is separated
from the Middlesex by non
reservoir rocks
24. 23
Conclusions
Gross Thickness mapping shows the following:
•Mapping indicates that basin dynamics caused gross thickness of
organic members to shift westward over time.
•Mapping indicates two clastic sources fed the basin in Upper Devonian
time
•Regional basement faults and lineaments had an effect on the
deposition of the formations and different cross strikes activated at
different times
• Foreland bulge paleostructural high caused lack of deposition and/or
erosion of Burket, Penn Yan, and Middlesex in NW PA
Reservoir mapping indicated two reservoir “fairways” in Pennsylvania.
In southern PA there are two reservoir packages, whereas in
northeastern PA the Burkett is the main reservoir.
Upper Devonian Shale is being explored by multiple companies for
potential oil and gas reserves and is a viable play with many successful test
wells already drilled