MALZAHN #1-9

API 3510324307 · Noble County, Oklahoma

ACOIL

API

3510324307

Operator

DAKOTA EXPLORATION LLC

County

Noble

Location

Sec 9 20N 01W (IM)

Completions

Oklahoma files 2 completion reports for this well. 2 carry a production test the operator filed.

Completion 1

STRAIGHT HOLEACOIL

Spudded

2011-09-30

Drilling finished

2011-10-10

Completed

2011-12-25

First production

2011-12-25

Total depth

5,432 ft

Operator

DAKOTA EXPLORATION LLC

Intervals

Formation	Produced	Perforated (ft)	Treatment
MISSISSIPPI LIME	OIL	4,946–5,100	Acid, Frac
VIOLA	OIL	5,266–5,286	Acid, Frac

Production tests

Tested	Oil (bbl/d)	Gas (MCF/d)	Water (bbl/d)	Gravity (°API)	Shut-in (psi)	Choke
2011-11-14	12	40	40	40	380	—
2011-12-23	160	200	300	40	360	14/64

A production test is one measurement the operator made on one day and filed with Oklahoma. It is not a monthly average and it does not describe how the well produced afterwards. The choke size is shown exactly as filed: Oklahoma records it in inches on some reports and in sixty-fourths of an inch on others, and names the unit on neither. A dash is a measurement Oklahoma did not file, or one it filed outside any physically possible range.

Casing

String	Size (in)	Weight (lb/ft)	Grade	Set (ft)	Cement (sacks)
PRODUCTION	4 1/2	11.6	J-55	5,427	300
SURFACE	9 5/8	36	STC	225	120

Completion 2

STRAIGHT HOLEACOIL

Spudded

2011-09-30

Drilling finished

2011-10-10

Completed

2011-12-25

Recompleted

2013-02-07

First production

2011-12-25

Total depth

5,432 ft

Operator

DAKOTA EXPLORATION LLC

Intervals

Formation	Produced	Perforated (ft)	Treatment
BIG LIME	OIL	4,458–4,464	Acid, Frac
MISSISSIPPI LIME	OIL	4,946–5,100	Acid, Frac
VIOLA	OIL	5,266–5,286	Acid, Frac

Production tests

Tested	Oil (bbl/d)	Gas (MCF/d)	Water (bbl/d)	Gravity (°API)	Shut-in (psi)	Choke
2011-12-23	160	200	300	40	360	14/64
2012-11-14	12	40	40	40	380	—
2013-02-07	10	80	15	40	560	—

Casing

String	Size (in)	Weight (lb/ft)	Grade	Set (ft)	Cement (sacks)
PRODUCTION	4 1/2	11.6	J-55	5,427	300
SURFACE	9 5/8	36	STC	225	120

Drilling permits

Oklahoma files 4 applications to drill this well, naming 17 target formations. A permit records what an operator asked to do, not what it did. A target formation is where the operator aimed, and the hole may have missed it, stopped short of it or never been drilled.

Filed 2011-09-15

WRADRStraight hole

Permit API

35103243070000

Operator

DAKOTA EXPLORATION LLC

Well type

OIL

Approved

2011-09-15

Expires

2012-03-15

Proposed depth

5,400 ft

Surface casing

210 ft

Ground elevation

1,050 ft

Target formations

Formation	Expected top (ft)
HOTSON	1,150
RAGAN	1,700
BIG LIME	4,500
OSWEGO	4,555
SKINNER	4,820
MISSISSIPPI LM	5,000
WOODFORD	5,200

An expected top is the depth the operator predicted before drilling, on the application it filed with Oklahoma. It is not a measurement of where the formation was found.

Filed 2011-09-15

WRAAMStraight hole

Permit API

35103243070001

Operator

DAKOTA EXPLORATION LLC

Well type

OIL

Approved

2011-09-15

Expires

2012-03-15

Proposed depth

5,400 ft

Surface casing

210 ft

Ground elevation

1,050 ft

Target formations

Formation	Expected top (ft)
HOTSON	1,150
RAGAN	1,700
BIG LIME	4,500
OSWEGO	4,555
SKINNER	4,820
MISSISSIPPI LM	5,000
WOODFORD	5,200
VIOLA	5,255

An expected top is the depth the operator predicted before drilling, on the application it filed with Oklahoma. It is not a measurement of where the formation was found.

Filed 2013-02-06

WRARCStraight hole

Permit API

35103243070002

Operator

DAKOTA EXPLORATION LLC

Well type

OIL

Approved

2013-02-06

Expires

2013-08-06

Proposed depth

5,432 ft

Surface casing

225 ft

Ground elevation

1,120 ft

Target formation

Formation	Expected top (ft)
BIG LIME	4,500

An expected top is the depth the operator predicted before drilling, on the application it filed with Oklahoma. It is not a measurement of where the formation was found.

Filed 2023-07-27

WRARCStraight hole

Permit API

35103243070003

Operator

DAKOTA EXPLORATION LLC

Well type

OIL

Approved

2023-07-28

Expires

2025-01-28

Proposed depth

5,432 ft

Surface casing

225 ft

Ground elevation

1,120 ft

Target formation

Formation	Expected top (ft)
HOTSON	1,075

An expected top is the depth the operator predicted before drilling, on the application it filed with Oklahoma. It is not a measurement of where the formation was found.

Location

36.226389, -97.301562

36.22639, -97.30156 · Surface location as filed with Oklahoma⌘ or Ctrl + scroll to zoom

Every well in Noble County, Oklahoma

Oklahoma state record, from OK_wells_rbdms-wells.parquet. Corpus built 2026-09-11.