ARMSTRONG #4B
API 3503921763 · Custer County, Oklahoma
Drilling permits
Oklahoma files 3 applications to drill this well, naming 21 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 1998-05-08
WRADRTarget formations
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 9,000 |
| COTTAGE GROVE | 9,730 |
| HOGSHOOTER | 10,260 |
| CHECKERBOARD | 10,710 |
| CLEVELAND | 10,865 |
| CHEROKEE | 12,895 |
| ATOKA | 14,200 |
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 1998-05-08
WRAAMTarget formations
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 9,000 |
| COTTAGE GROVE | 9,730 |
| HOGSHOOTER | 10,260 |
| CHECKERBOARD | 10,710 |
| CLEVELAND | 10,865 |
| CHEROKEE | 12,895 |
| ATOKA | 14,200 |
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 1998-05-08
WRAAMTarget formations
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 9,000 |
| COTTAGE GROVE | 9,730 |
| HOGSHOOTER | 10,260 |
| CHECKERBOARD | 10,710 |
| CLEVELAND | 10,865 |
| CHEROKEE | 12,895 |
| ATOKA | 14,200 |
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
35.546826, -99.218225
Every well in Custer County, Oklahoma
Oklahoma state record, from OK_wells_rbdms-wells.parquet. Corpus built 2026-09-11.