By: Rick Andrews Oklahoma Geological Survey · 2009-08-14 · By: Rick Andrews. Oklahoma Geological...

Current Production Trends of the Woodford Shaleand Surface to Subsurface Correlations of Overlying

and Underlying Formation Boundaries

By: Rick AndrewsOklahoma Geological Survey

October 22, 2008

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• Regional distribution of Woodford producing wells

• Surface to subsurface correlation of bounding strata

• Production declines (some of the better wells)

Woodford producing wells in Oklahoma as of 4-08. From IHS Energy Data.

Woodford wells in Wagoner Co. Oklahoma

T.

17

N.

R. 18 E.R. 17 E.

RESOURCES DEVELWCS INCWCT OPERATING

TD ~ 1,000 ft

5-25MMCF cum/well

Woodford wells in Carter Co. Oklahoma

CIMAREXONEAL andCHESAPEAKE

Perf ~4,000 ftMostly older (vert) wellsBoth oil and gas

TEXAS

OKLAHOMA

Woodford wells in Marshall Co. Oklahoma

T.6S.

T.5S.

R. 5 E.R. 4 E. R. 6 E. R. 7 E.

Cimarex & Range ProdOlder wells (vertical)Some poor-producing

horizontal wellsPerf ~4,000 ft T.

7S.

Woodford wells in Oklahoma – Main Deep TrendAtoka Co.

Pittsburg Co.

Hughes Co.

Coal Co.

McIntosh Co.

ChesapeakeContinental

Newfield

DevonSt Mary

Antero

Okfuskee Co.

NewfieldDevon

Pablo

XTO

PetroquestAntero

Metro

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Caney

Sycamore

TXO #1 Smith, SW SW 31, T2S-R2E

~ 1 ¼ miles

6300

6200

6100

6000

5900

Woo

dfor

dS

ycam

ore

0 400 800 CPS

Feet

0

100

200

300

400

GR Den-Neu Resistivity

Chert

Syc

Vio

Woodford – Sycamore Strata S/of Arbuckles

West side I-35SE/4 sec. 25, T2S-R1E

Woodford

West side I-35SE/4 sec. 25, T2S-R1E

Syc

amor

eW

oodf

ord

TXO #1 AE Smith, SW SW 31, T2S-R2E

6200

Woo

dfor

dS

ycam

ore

GR- API Den-Neu Resistivity

Fay’s (1989) top

1 10 10030 20 10 0

Chert and siliceous shale with P nodules grading down into mostly shale

~ 1 ¼ miles

Traditional top

Gre

enis

h-gr

ay s

hale

w

ith li

gniti

c cl

ay

surface GR

Woodford – Sycamore Contact; So of Arbuckles

Chert

6300

Sycamore limestones

Woodford Shale

Greenish-gray, earthy shale below Sycamore carbonates and above Woodford Shale fo

rmati

on co

ntac

t

Cherty Woodford Shale

Greenish-gray shale below Sycamore carbonates and above Woodford cherty beds

form

atio

n co

ntac

t

SE NW NE 30

T 1S R2ESW NE NE 30

T 1S R2E

Placid Oil Company No. 1 JoyceC NE SW 20, T1S-R2E<1 mi

Traditional formation- boundary log picks

Woo

dfor

d Sh

ale

HuntonLs

SycamoreLs

GR Den-Neu Por Resistivity

Surface GR

covered

Hunton/Woodford/Sycamore Strata N/of of Arbuckles

east side of I-35

east SH-77D& W/of I-35

1 10 10030 20 10 0

SW NE NE 30T1S-R2E

East side of I-35


0

20

ft

60

40

80

100

30 20 10 0

Cherty w/Pnods

Mostly chert

Shaly

Cherty

limestone

Woodford

Shale

SycamoreLs

Woodford – Sycamore Contact N/of Arbuckles

Outcrop contact

VeryCherty

limestone

Chert?

Shaly

Surface GR

Shaly?


Low resist shale

Shale

Shaly

Shaly

1 10 100

SE NW NE 30

T 1S R2ESW NE NE 30

T 1S R2E


Traditional formation- boundary log picks

Woo

dfor

d Sh

ale

HuntonLs

SycamoreLs


Surface GR

covered

Hunton/Woodford/Sycamore Strata N/of of Arbuckles

east side of I-35

east SH-77D& W/of I-35

1 10 10030 20 10 0

SE NW NE 30T 1S R2E

Placid Oil Company No. 1 JoyceC NE SW 20, T1S-R2E


<1 mi

Woo

dfor

d Sh

ale

HuntonLs

east SH-77D & W/of I-35

Woodford

Shale

HuntonLs

30 20 10 0 1 10 100

Surface GR

Surface GR

Outcroptop

Gravel lag & shBlack & green earthy shale

Woodford – Hunton Contact N/of Arbuckles

Woodford Shale

Unconformity

conglomerate

Transgressive shale

Note: these beds are overturned

Hunton – lower part (Henryhouse? Fm)

Hunton contact

Up-section

Woodford ShaleTransgressive shale

Hunton contact

Unconformity conglomerate

Up-sectionNote: these beds are overturned

Unconformity conglomerate just above Hunton

TALK OUTLINE




Atoka Co.

Pittsburg Co.

Hughes Co.

McIntosh Co.Okfuskee Co.

Coal Co.

Devon 1-20H Billie JeanNW NW 20, 3N-11E

Newfield 1H-32 WilsonNW NW 32, 2N-11E

Newfield 1H-7 SpragueNE NW 7, 2N-11E

Newfield 1H-20 MelvinNE NE 20, 4N-11E

Newfield 2H-31 PattersonSE SW 31, 4N-11E

Newfield 4H-22 Sherman EllisSW SW 22, 5N-12E

Pay out??







Atoka Co.

Pittsburg Co.

Hughes Co.


Coal Co.

71% decline in 3 m

o

48% decline in 14 mo






Newfield 4H-22 Sherman EllisSW SW 22, 5N-12E Atoka Co.

Pittsburg Co.

Hughes Co.


Coal Co.







Atoka Co.

Pittsburg Co.

Hughes Co.


Coal Co.

Pay-out?69% decline in 15 mo







Atoka Co.

Pittsburg Co.

Hughes Co.


Coal Co.

Pay-out?


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8

7

6

5

NYMEX Henry- Hub natural Gas Prices - 12 previous months$

per

M

MB

tu

Aug Sept Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug

2007 2008

$ p

er

MM

Btu

Unfriendly price for shale gas!

By: Rick Andrews Oklahoma Geological Survey · 2009-08-14 · By: Rick Andrews. Oklahoma Geological...

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Transcript of By: Rick Andrews Oklahoma Geological Survey · 2009-08-14 · By: Rick Andrews. Oklahoma Geological...