Transcript Log Curve Amplitude Slicing–Visualization of Well Logs for

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
Today’s Presentation
• Trenton/BR-regional
ORDOVICIAN
• Trenton/BR - field scale
Stoney Point
• Trenton/BR -regional
lithology and exploration
opportunities
Formations
Utica Sh
Collingwood Sh.
Trenton Group
Black River
Trenton/Black River
Outcrops and
Penetrations (>3700)
BLACK RIVER
Utica
Shale
TRENTON
TRENTON
Penetrations
N
50 miles
Trenton Isopach and
Production
CI: 50 ft
N
50 miles
Penetrations
CROSS SECTIONS N-S
Trenton Isopach and
Production
CI: 50 ft
N
50 miles
Penetrations
CROSS SECTIONS W-E
Top Trenton
Subsea Contours
and Production
CI: 500 ft
N
50 miles
ZOOM
IN
Penetrations
Trenton/Black River
Production Detail
100000
10000
Stoney Pt
1000000
AlbioScipio
Annual Oil (bbls)
10000000
Northville
100000000
Deerfield
Plus
Ontario
Fields
1000
30 35 40 45 50 55 60 65 70 75 80 85 90 95 00
Trenton/Black River Production
(through June 2003, Michigan)
Field Name
Albion Scipio 1-6
Stoney Point
Hanover
Northville
Deerfield
Summerfield Sec 19
Summerfield
Henrietta
Tekonsha
Lee Sec 34
Reading
Medina
Summerfield Sec 07
Springport
Hanover Sec 13
Cadmus
Green Oak
Rattle Run
New Boston
Macon Creek
Reading, Sec. 25
Newburg
Blissfield
Olivet
Sumpter Sec 22
Ridgeway Sec 01
Winterfield
Sand Creek
Sumpter
DNR
ProdForm
TRNN
TRNN
TRNN
TRNN
TRNN
TRNN
TRNN
TRNN
TRNN
BKRV
TRNN
TRNN
TRNN
TRNN
TRNN
BKRV
TRNN
BKRV
TRNN
TRNN
TRNN
TRNN
TRNN
TRNN
TRNN
TRNN
BKRV
TRNN
TRNN
Disc Abn Cumulative
Date Date Oil (bbls)
57
132,027,130
83
10,824,153
59
1,349,470
54
1,171,184
20
763,916
82
35,498
58
34,488
79
26,023
59
76
19,309
88
12,324
71
73
5,431
61
5,065
85
4,137
60
70
4,014
82
3,912
85
3,604
67
70
3,315
90
2,363
43
49
2,349
60
1,715
1,230
79
767
62
84
718
69
71
340
41
42
227
54
62
47
81
82
?
87
?
41
?
Cumulative
Gas (mcf)
230,719,075
25,159,460
597,737
14,332,358
?
?
?
?
?
436,114
?
?
?
?
?
156,846
62,671
?
?
?
3,191,410
?
?
?
?
?
106,946
?
?
Log Curve Amplitude Slicing
and Tomography- Review
Southeast
Utica
Shale
– Any
Northwest regularly
sampled
data from
boreholes
Top Trenton
Time-surface
250 ft
Base Trenton/
Top Black River
(e.g. Log or
Lithology
curve data)
– One or
more
100 mi
correlative,
bounding
Slicing downward
from the Top Trenton timesurfaces
at 1 ft increment
Gamma Ray Amplitudes
Producers Trnn
High
GR
Contour
Interval
6 API
Units
Low
GR
N
Clean
Carbonates
Dirty
Carbonates
(GR<24 API)
(GR>36 API)
One Top Down Slice
From
Utica
Gamma Ray Animation
Producers Trnn
High
GR
Contour
Interval
6 API
Units
Low
GR
N
Clean
Carbonates
Dirty
Carbonates
(GR<24 API)
(GR>36 API)
357 Top Down Slices
From
Utica
Today’s Presentation
• Trenton/BR-regional
• Trenton/BR - field
scale Stoney Point
ORDOVICIAN
• Trenton/BR -regional
lithology and exploration
opportunities
Formations
Utica Sh
Collingwood Sh.
Trenton Group
Black River
Monthly Volumes (BBLS)
1000000
100000
10000
OIL
GAS
WATER
1000
84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03
Year
Production
Stoney
Point
Producer
T/Trnn
Structure
CI:10 ft
1 mile
N
Stoney Point – Cross Section
T/Trenton Structure
Producer
CI:20 ft
Digital Logs
1 mile
N
Penetration
Stoney Point Cross Section
Gamma Ray 0 to 150 api; gamma ray
amplitude interpolation between wells
WEST
GR
EAST
PEF
DATUM
Hardground/
unconformity
Top
Down
Slicing
Slice
100
TRNN
Bentonites
Millbrig
BKRV
One Gamma Ray Slice
Stoney Point
Wells
(152 with
curves)
High
GR
Contour
Interval
6 API
Units
Low
GR
N
Clean
Carbonates
Dirty
Carbonates
(GR<24 API)
(GR>36 API)
Top Trenton Down
Gamma Ray Animation
Stoney Point
Wells
(182 with
curves)
High
GR
Contour
Interval
6 API
Units
Low
GR
N
350
Slices
Clean
Carbonates
Dirty
Carbonates
(GR<24 API)
(GR>36 API)
Top Trenton Down
Stoney Point Cross Section
Gamma Ray 0 to 150 api; gamma ray
amplitude interpolation between wells
WEST
GR
EAST
PEF
Better
time-line
TRNN
Bottom
Up
Slicing
DATUM
from
Black
River
Shale
(Bentonite)
Gamma Ray Animation
Stoney Point
Wells
(182 with
curves)
High
GR
Contour
Interval
6 API
Units
Low
GR
N
Clean
Carbonates
Dirty
Carbonates
(GR<24 API)
(GR>36 API)
350
Slices
Black River Shale Up
Stoney Point Cross Section
Photoelectric factor 1 to 6 b/e; PEF
amplitude interpolation between wells
WEST
EAST
GR
Lithology
Indicator
PEF
TRNN
Bottom
Up
Slicing
DATUM
from
Black
River
Shale
One PEF Slice – Slice 19
Stoney Point
Wells
(87 with
curves)
High
PE
Contour
Interval
1 barnes
electron
Low
PE
Dolomitic
Limestone
(PEF<4.5 b/e)
(PEF>4.5 b/e)
(cutoffs generalized to Stoney Point)
N
Black River Shale Up
PEF Animation
Stoney Point
Wells
(87 with
curves)
High
PE
Contour
Interval
1 barnes
electron
Low
PE
353
Slices
Dolomitic
Limestone
(PEF<4.5 b/e)
(PEF>4.5 b/e)
(cutoffs generalized to Stoney Point)
N
Black River Shale Up
Today’s Presentation
• Trenton/BR-regional
• Trenton/BR - field scale
Stoney Point
ORDOVICIAN
• Trenton/BR regional lithology
and exploration
opportunities
Formations
Utica Sh
Collingwood Sh.
Trenton Group
Black River
TRNN Lithology Animation
Lithology Control (1800 wells)
LIMESTONE
N
DOLOMITE
Top Trenton Down
Lithology Slices
SHALE
200
Slices
TRNN Cuttings - Rhombic
Producing Wells
Rhombic texture
N
Rhombs described in cuttings
(78 wells, 5 to 320 ft)
TRNN Cuttings - Vugs
Producing Wells
Rhombic
N
Vugs
Vugs described in cuttings
(180 wells, 2 to 400 ft)
TRNN Cuttings - Fractures
Producing Wells
Rhombic
N
Vugs
Fractures
Fractures described in cuttings
(240 wells, 5 to 500 ft)
Basin-scale Faults (JRW)
Faults
Rhombic
Vugs
Fractures
Interpreted Faults from top
mapping, terrain analysis, literature
TRNN Cuttings - Shows
Oil Shows
Rhombic
N
Vugs
Fractures
Shows of Oil (700+ wells)
TRNN Cuttings - Shows
Oil Shows
Rhombic
N
Gas Shows
Vugs
Fractures
Shows of Gas (500 wells)
TRNN Opportunities
Oil Shows
Rhombic
N
Gas Shows
Vugs
CI: 50 ft
Fractures
All Trenton penetrations
and Isopach
TRNN Opportunities
DOLOMITIC CUTTINGS
CI: 50 ft
Oil Shows
Rhombic
N
Vugs
Gas Shows
Fractures
All Trenton penetrations and Isopach
Conclusions\What next?
• Three or more
potential
LCA
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