GRAFF 31 #2
API 3505921725 · Harper County, Oklahoma
Drilling permits
Oklahoma files 5 applications to drill this well, naming 12 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 1991-01-11
WRAAMTarget formations
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 5,300 |
| OSWEGO | 5,950 |
| CHESTER LM | 6,520 |
| HUNTON | 8,500 |
| SIMPSON GP | 8,650 |
| ARBUCKLE | 8,750 |
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 2001-06-14
WRARCTarget formations
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 5,300 |
| OSWEGO | 5,950 |
| CHESTER LM | 6,520 |
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 2005-09-15
WRARCTarget formation
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 5,350 |
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 2009-01-14
WRARCStraight holeTarget formation
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 5,350 |
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.
Application
REJRCStraight holeTarget formation
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 5,350 |
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.
Location
36.687309, -99.495860
Every well in Harper County, Oklahoma
Oklahoma state record, from OK_wells_rbdms-wells.parquet. Corpus built 2026-09-11.