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Regional Trends in the Trenton and Black River
of the Michigan Basin
Well log tomography and lithology data reveal potential exploration
opportunities
A. S. Wylie, Jr. and J. R. Wood
Michigan Technological University
FormationsUtica ShCollingwood Sh.Trenton GroupBlack RiverO
RD
OV
ICIA
N• Trenton/BR-regional• Trenton/BR - field scale
Stoney Point• Trenton/BR -regional
lithology and exploration opportunities
Today’s Presentation
Trenton/Black River Outcrops and
Penetrations (>3700)
TRENTON
BLACK RIVER
Utica Shale
TRENTONPenetrations
N 50 miles
Trenton Isopach and Production
CI: 50 ft
50 miles
N
Penetrations CROSS SECTIONS N-S
Trenton Isopach and Production
CI: 50 ft
50 miles
N
Penetrations CROSS SECTIONS W-E
Top TrentonSubsea Contours
and Production
CI: 500 ft
50 miles
N
ZOOM IN
Penetrations
Dee
rfie
ld
Nor
thvi
lle
Alb
ioS
cipi
o
Sto
ney
Pt
Ann
ual O
il (b
bls)
Trenton/Black RiverProduction Detail
Plus OntarioFields
Trenton/Black River Production(through June 2003, Michigan)
Field NameDNR
ProdFormDisc Date
Abn Date
Cumulative Oil (bbls)
Cumulative Gas (mcf)
Albion Scipio 1-6 TRNN 57 132,027,130 230,719,075Stoney Point TRNN 83 10,824,153 25,159,460
Hanover TRNN 59 1,349,470 597,737Northville TRNN 54 1,171,184 14,332,358Deerfield TRNN 20 763,916 ?
Summerfield Sec 19 TRNN 82 35,498 ?Summerfield TRNN 58 34,488 ?
Henrietta TRNN 79 26,023 ?Tekonsha TRNN 59 76 19,309 ?
Lee Sec 34 BKRV 88 12,324 436,114Reading TRNN 71 73 5,431 ?Medina TRNN 61 5,065 ?
Summerfield Sec 07 TRNN 85 4,137 ?Springport TRNN 60 70 4,014 ?
Hanover Sec 13 TRNN 82 3,912 ?Cadmus BKRV 85 3,604 156,846
Green Oak TRNN 67 70 3,315 62,671Rattle Run BKRV 90 2,363 ?
New Boston TRNN 43 49 2,349 ?Macon Creek TRNN 60 1,715 ?
Reading, Sec. 25 TRNN 1,230 3,191,410Newburg TRNN 79 767 ?Blissfield TRNN 62 84 718 ?
Olivet TRNN 69 71 340 ?Sumpter Sec 22 TRNN 41 42 227 ?
Ridgeway Sec 01 TRNN 54 62 47 ?Winterfield BKRV 81 82 ? 106,946
Sand Creek TRNN 87 ? ?Sumpter TRNN 41 ? ?
Log Curve Amplitude Slicing and Tomography- Review
Top TrentonTime-surface
– Any regularly sampled data from boreholes
– One or more correlative, bounding time-surfaces
(e.g. Log or Lithology curve data)
100 mi
250 ft Base Trenton/Top Black River
Utica Shale
Slicing downward from the Top Trenton at 1 ft increment
NorthwestSoutheast
Gamma Ray Amplitudes
DirtyCarbonates(GR>36 API)
Clean Carbonates(GR<24 API)
One Top Down Slice
HighGR
LowGR
N From Utica
Contour Interval
6 API Units
Producers - Trnn
Gamma Ray Animation
DirtyCarbonates(GR>36 API)
Clean Carbonates(GR<24 API)
357 Top Down Slices
HighGR
LowGR
Producers -
Trnn
N From Utica
Contour Interval
6 API Units
FormationsUtica ShCollingwood Sh.Trenton GroupBlack RiverO
RD
OV
ICIA
N• Trenton/BR-regional
• Trenton/BR - field scale Stoney Point
• Trenton/BR -regional lithology and exploration opportunities
Today’s Presentation
Stoney Point
N
CI:10 ft1 mile
Producer
T/Trnn Structure
Production
Stoney Point – Cross Section
N
CI:20 ft
1 mile
ProducerT/Trenton Structure
Digital LogsPenetration
-2600
-2520
DATUM
TRNN
BKRV
Bentonites
Stoney Point Cross Section
WEST EAST
GR PEF
Gamma Ray 0 to 150 api; gamma ray amplitude interpolation between wells
Top Down
Slicing
Millbrig
Hardground/unconformity
Slice 100
One Gamma Ray Slice
DirtyCarbonates(GR>36 API)
Clean Carbonates(GR<24 API)
Top Trenton Down
HighGR
LowGR
Wells
N
Stoney Point
Contour Interval
6 API Units
(152 with curves)
Gamma Ray Animation
DirtyCarbonates(GR>36 API)
Clean Carbonates(GR<24 API)
Top Trenton Down
HighGR
LowGR
Wells
N
Stoney Point
Contour Interval
6 API Units
(182 with curves)
350 Slices
DATUM
TRNN
Stoney Point Cross Section
WEST EAST
GR PEF
Gamma Ray 0 to 150 api; gamma ray amplitude interpolation between wells
Bottom Up
Slicing
from Black River Shale
Better time-line
(Bentonite)
Gamma Ray Animation
DirtyCarbonates(GR>36 API)
Clean Carbonates(GR<24 API)
HighGR
LowGR
Wells
N
Stoney Point
Contour Interval
6 API Units
(182 with curves)
Black River Shale Up
350 Slices
DATUM
TRNN
Stoney Point Cross Section
WEST EAST
GR PEF
Photoelectric factor 1 to 6 b/e; PEF amplitude interpolation between wells
Bottom Up
Slicing
from Black River Shale
Lithology Indicator
One PEF Slice – Slice 19
Limestone(PEF>4.5 b/e)
Dolomitic(PEF<4.5 b/e)
Black River Shale Up
HighPE
LowPE
Wells
N
Stoney Point
Contour Interval 1 barneselectron
(87 with curves)
(cutoffs generalized to Stoney Point)
PEF Animation
Limestone(PEF>4.5 b/e)
Dolomitic(PEF<4.5 b/e)
Black River Shale Up
HighPE
LowPE
Wells
N
Stoney Point
Contour Interval 1 barneselectron
(87 with curves)
(cutoffs generalized to Stoney Point)
353 Slices
FormationsUtica ShCollingwood Sh.Trenton GroupBlack RiverO
RD
OV
ICIA
N• Trenton/BR-regional• Trenton/BR - field scale
Stoney Point
• Trenton/BR -regional lithology and exploration opportunities
Today’s Presentation
TRNN Lithology Animation
Top Trenton Down Lithology Slices
Lithology Control (1800 wells)
N 200 Slices
LIMESTONE DOLOMITE SHALE
TRNN Cuttings - Rhombic
Rhombs described in cuttings(78 wells, 5 to 320 ft)
Producing Wells
N
Rhombic texture
TRNN Cuttings - Vugs
Vugs described in cuttings(180 wells, 2 to 400 ft)
Producing Wells
N
VugsRhombic
TRNN Cuttings - Fractures
Fractures described in cuttings(240 wells, 5 to 500 ft)
Producing Wells
N
VugsRhombic Fractures
Basin-scale Faults (JRW)
Interpreted Faults from top mapping, terrain analysis, literature
Faults
VugsRhombic Fractures
TRNN Cuttings - Shows
Shows of Oil (700+ wells)
Oil Shows
N
VugsRhombic Fractures
TRNN Cuttings - Shows
Shows of Gas (500 wells)
Oil Shows
N
VugsRhombic Fractures
Gas Shows
TRNN OpportunitiesOil Shows
N
VugsRhombic Fractures
Gas Shows
All Trenton penetrations and Isopach
CI: 50 ft
TRNN Opportunities
Oil Shows
N
VugsRhombic FracturesGas Shows
All Trenton penetrations and Isopach
CI: 50 ft
DOLOMITIC CUTTINGS
LCA• Three or more potential Trenton-Black River fairways or fault trends defined for further investigation
• Regional trends in cuttings descriptions can reveal potential exploration areas
• Well log tomography can be used with traditional techniques to improve subsurface interpretations
Conclusions\What next?
