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DERBY #1-4H

API 3514921404 · Washita County, Oklahoma

ACGAS
API
3514921404
Operator
UNBRIDLED RESOURCES LLC
County
Washita
Location
Sec 4 11N 17W (IM)

Drilling permit

Oklahoma files 1 application to drill this well, naming 3 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 2008-08-27

WRADRHorizontal hole
Permit API
35149214040000
Operator
CHESAPEAKE OPERATING LLC
Well type
GAS
Approved
2008-08-27
Expires
2009-02-27
Proposed depth
17,500 ft
Surface casing
1,500 ft
Ground elevation
1,643 ft

Target formations

FormationExpected top (ft)
VIRGILIAN8,930
MISSOURIAN10,230
DES MOINES12,160

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

35.451277, -99.008837

35.45128, -99.00884 · Surface location as filed with Oklahoma

Every well in Washita County, Oklahoma

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