CHIEF #1-18
API 3504522160 · Ellis County, Oklahoma
Drilling permits
Oklahoma files 3 applications to drill this well, naming 11 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 2000-12-27
WRADRTarget formations
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 7,600 |
| COTTAGE GROVE | 8,150 |
| CLEVELAND | 8,700 |
| OSWEGO | 9,100 |
| CHEROKEE | 9,400 |
| ATOKA | 10,150 |
| MORROW | 10,300 |
| CHESTER | 11,350 |
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 2002-12-04
WRARCTarget formation
| Formation | Expected top (ft) |
|---|---|
| CLEVELAND | 8,863 |
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 2004-05-27
WRARCTarget formations
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 7,654 |
| COTTAGE GROVE | 8,202 |
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
36.119309, -99.692350
Every well in Ellis County, Oklahoma
Oklahoma state record, from OK_wells_rbdms-wells.parquet. Corpus built 2026-09-11.