Regional Trends in the Trenton and Black River of the Michigan Basin Well log tomography and...

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?