SEIFERT #4-9-1XH

API 3501124217 · Blaine County, Oklahoma

ACOIL
API
3501124217
Operator
DERBY EXPLORATION LLC
County
Blaine
Location
Sec 4 18N 13W (IM)

Completion

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

Completion 0

HORIZONTAL HOLEACOIL
Spudded
2019-05-26
Drilling finished
2019-06-14
Completed
2021-09-13
First production
2021-09-13
Total depth
16,789 ft
True vertical depth
9,562 ft
Lateral length
7,004 ft
Operator
DERBY EXPLORATION LLC

Interval

FormationProducedPerforated (ft)Treatment
MISSISSIPPIANOIL9,556–16,692Acid, Frac

Production test

TestedOil (bbl/d)Gas (MCF/d)Water (bbl/d)Gravity (°API)Shut-in (psi)Choke
2021-09-172593,2481,95848.82,62030/64

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

StringSize (in)Weight (lb/ft)GradeSet (ft)Cement (sacks)
PRODUCTION5.523P-11016,7892,106
INTERMEDIATE9.62540J-558,202650
SURFACE13.37554.5J-55350355

Drilling permit

Oklahoma files 1 application to drill this well, naming 2 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 2019-05-21

WRADRHHMU
Permit API
35011242170000
Operator
DERBY EXPLORATION LLC
Well type
OIL
Approved
2019-05-21
Expires
2020-11-21
Proposed depth
17,077 ft
Proposed measured depth
18,789 ft
Proposed true vertical depth
9,562 ft
Proposed lateral
7,004 ft
Surface casing
360 ft
Ground elevation
1,576 ft

Target formations

FormationExpected top (ft)
MISSISSIPPIAN8,535
WOODFORD10,005

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

36.071685, -98.584878

36.07169, -98.58488 · Surface location as filed with Oklahoma

Every well in Blaine County, Oklahoma

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