EVANS #4-9-1XH

API 3504323613 · Dewey County, Oklahoma

ACOIL
API
3504323613
Operator
DERBY EXPLORATION LLC
County
Dewey

Completion

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

Completion 0

HORIZONTAL HOLEACOIL
Spudded
2018-05-02
Drilling finished
2018-06-13
Completed
2018-08-14
First production
2018-08-14
Total depth
20,500 ft
Operator
DERBY EXPLORATION LLC

Intervals

FormationProducedPerforated (ft)Treatment
MISSISSIPPIAN (LESS CHESTER)OIL10,512–15,367Acid, Frac
MISSISSIPPIANOIL15,367–20,355Acid, Frac

Production test

TestedOil (bbl/d)Gas (MCF/d)Water (bbl/d)Gravity (°API)Shut-in (psi)Choke
2018-09-065035,804653521,10030/64

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-11020,5002,620
INTERMEDIATE9.62540P-1108,8201,095
SURFACE13.37554.5J-55710490

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 2018-04-20

WRADRHorizontal hole
Permit API
35043236130000
Operator
DERBY EXPLORATION LLC
Well type
OIL
Approved
2018-04-20
Expires
2018-10-20
Proposed depth
19,920 ft
Proposed measured depth
20,500 ft
Proposed true vertical depth
10,036 ft
Proposed lateral
9,929 ft
Surface casing
700 ft
Ground elevation
1,938 ft

Target formation

FormationExpected top (ft)
MISSISSIPPIAN9,362

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

36.043880, -98.702200

36.04388, -98.70220 · Surface location as filed with Oklahoma

Every well in Dewey County, Oklahoma

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