BIG IRON 4-21N-1E #1WH

API 3510324619 · Noble County, Oklahoma

ACOIL

API

3510324619

Operator

GREAT HORNED OWLS, LLC

County

Noble

Location

Sec 4 21N 01E (IM)

Completion

Oklahoma files 1 completion report for this well. One carries a production test the operator filed.

Completion 0

HORIZONTAL HOLEACOIL

Spudded

2014-01-26

Drilling finished

2014-02-10

Completed

2014-07-15

First production

2014-07-15

Total depth

10,520 ft

Operator

GREAT HORNED OWLS, LLC

Interval

Formation	Produced	Perforated (ft)	Treatment
WOODFORD	OIL	5,583–10,372	Acid, Frac

Production test

Tested	Oil (bbl/d)	Gas (MCF/d)	Water (bbl/d)	Gravity (°API)	Shut-in (psi)	Choke
2014-07-27	354	1,345	2,584	—	0	0/64

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)
INTERMEDIATE	7"	26#	RYH110	5,533	380
LINER	4.5"	11.6#	RYH110C DC-HTQ	5,115	545
CONDUCTOR	16"	75#	J-55	85	14
SURFACE	9 5/8"	36#	J-55	510	300

Drilling permit

Oklahoma files 1 application to drill this well, naming 6 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 2013-12-31

WRADRHorizontal hole

Permit API

35103246190000

Operator

DEVON ENERGY PRODUCTION COMPANY LP

Well type

OIL

Approved

2013-12-31

Expires

2014-06-30

Proposed depth

10,650 ft

Proposed measured depth

10,520 ft

Proposed true vertical depth

4,885 ft

Proposed lateral

5,616 ft

Surface casing

500 ft

Ground elevation

998 ft

Target formations

Formation	Expected top (ft)
MISSISSIPPIAN	4,667
WOODFORD	4,857
MISENER	4,860
SYLVAN	4,875
VIOLA	4,918
SIMPSON	4,950

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

36.319520, -97.210030

36.31952, -97.21003 · 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.