COBB RANCH #4

API 3514726840 · Washington County, Oklahoma

ACOIL

API

3514726840

Operator

ENTRANSCO ENERGY LLC

County

Washington

Location

Sec 21 24N 14E (IM)

Completion

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

Completion 1

STRAIGHT HOLEACOIL

Spudded

2000-05-19

Drilling finished

2000-05-23

Completed

2000-08-03

Recompleted

2011-06-28

First production

2000-08-03

Total depth

1,380 ft

Operator

ENTRANSCO ENERGY LLC

Intervals

Formation	Produced	Perforated (ft)	Treatment
PERU	GAS	476–492	Acid, Frac
MULKY	GAS	696–706	Acid, Frac

Production test

Tested	Oil (bbl/d)	Gas (MCF/d)	Water (bbl/d)	Gravity (°API)	Shut-in (psi)	Choke
2011-07-13	2	29	58	—	4	—

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)
CONDUCTOR	7	20	J-55	30	3
PRODUCTION	4.5	9.5	J-55	1,377	133

Drilling permits

Oklahoma files 2 applications to drill this well, naming 11 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 2000-05-12

WRADR

Permit API

35147268400000

Operator

OVINTIV MID-CONTINENT INC.

Well type

OIL

Approved

2000-05-12

Expires

2000-11-12

Proposed depth

1,340 ft

Ground elevation

723 ft

Target formations

Formation	Expected top (ft)
PERU	458
OSWEGO	628
MULKY	680
IRON POST	692
CROWEBERG	752
BLUEJACKET	1,026
BARTLESVILLE	1,052
TUCKER	1,242
BURGESS	1,281
MISSISSIPPI	1,320

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 2011-05-27

WRARCStraight hole

Permit API

35147268400001

Operator

CEP MID-CONTINENT LLC

Well type

OIL

Approved

2011-05-27

Expires

2011-11-27

Proposed depth

1,380 ft

Surface casing

1,377 ft

Ground elevation

723 ft

Target formation

Formation	Expected top (ft)
PERU	474

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

36.547755, -95.822497

36.54776, -95.82250 · Surface location as filed with Oklahoma⌘ or Ctrl + scroll to zoom

Every well in Washington County, Oklahoma

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