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SPIERS #1-28H

API 3505123700 · Grady County, Oklahoma

EXNT
API
3505123700
Operator
MARATHON OIL COMPANY LLC
County
Grady
Location
Sec 28 05N 06W (IM)

Drilling permits

Oklahoma files 2 applications 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 2013-07-25

WRADRHorizontal hole
Permit API
35051237000000
Operator
MARATHON OIL COMPANY LLC
Well type
NT
Approved
2013-07-25
Expires
2014-01-25
Proposed depth
20,433 ft
Surface casing
1,500 ft
Ground elevation
1,164 ft

Target formation

FormationExpected top (ft)
WOODFORD15,279

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 2013-07-25

WRAAMHorizontal hole
Permit API
35051237000001
Operator
MARATHON OIL COMPANY LLC
Well type
NT
Approved
2013-07-25
Expires
2014-07-25
Proposed depth
20,433 ft
Surface casing
1,500 ft
Ground elevation
1,164 ft

Target formation

FormationExpected top (ft)
WOODFORD15,279

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.

Every well in Grady County, Oklahoma

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