HOLLENBACK #31-1H

API 3509325068 · Major County, Oklahoma

ACOIL

API

3509325068

Operator

COMANCHE EXPLORATION CO LLC

County

Major

Location

Sec 31 21N 16W (IM)

Completion

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

Completion 0

HORIZONTAL HOLEACOIL

Spudded

2017-05-18

Completed

2017-07-19

First production

2017-07-10

Total depth

13,560 ft

Operator

COMANCHE EXPLORATION CO LLC

Interval

Formation	Produced	Perforated (ft)	Treatment
MISSISSIPPIAN	OIL	9,072–13,538	Acid, Frac

Production test

Tested	Oil (bbl/d)	Gas (MCF/d)	Water (bbl/d)	Gravity (°API)	Shut-in (psi)	Choke
2017-07-10	125	1,003	1,925	37.2	2,800	34/64

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	P-110 GBCD	8,950	340
PRODUCTION	4.5	13.5	BT&C	13,560	440
CONDUCTOR	13.375'	48	J-55 ST&C	405	415
CONDUCTOR	20"	—	—	150	10
SURFACE	9.625	36	J-55 LT&C	797	482

Drilling permit

Oklahoma files 1 application to drill this well, naming 1 target formation. 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 2017-05-01

WRADRHorizontal hole

Permit API

35093250680000

Operator

COMANCHE EXPLORATION CO LLC

Well type

OIL

Approved

2017-05-01

Expires

2017-11-01

Proposed depth

13,545 ft

Proposed measured depth

13,560 ft

Proposed true vertical depth

8,957 ft

Proposed lateral

4,936 ft

Surface casing

800 ft

Ground elevation

1,801 ft

Target formation

Formation	Expected top (ft)
MISSISSIPPIAN	7,800

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

36.260554, -98.948396

36.26055, -98.94840 · Surface location as filed with Oklahoma⌘ or Ctrl + scroll to zoom

Every well in Major County, Oklahoma

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