FOUR SISTERS #1-5H
API 3500322101 · Alfalfa County, Oklahoma
EXNT
Drilling permit
Oklahoma files 1 application to drill this well, naming 4 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 2011-07-12
WRADRHorizontal holePermit API
35003221010000
Operator
SANDRIDGE EXPLORATION & PRODUCTION LLC
Well type
NT
Approved
2011-07-12
Expires
2012-01-12
Proposed depth
10,715 ft
Surface casing
490 ft
Ground elevation
1,261 ft
Target formations
| Formation | Expected top (ft) |
|---|---|
| TONKAWA | 4,090 |
| LANSING-KANSAS CITY | 4,400 |
| DES MOINES | 4,795 |
| MISSISSIPPI | 4,920 |
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 Alfalfa County, Oklahoma
Oklahoma state record, from OK_wells_rbdms-wells.parquet. Corpus built 2026-09-11.