ZEHNDER #1
API 3506120866 · Haskell County, Oklahoma
ACGAS
Drilling permit
Oklahoma files 1 application to drill this well, naming 9 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 1990-08-22
WRADRPermit API
35061208660000
Operator
CHESAPEAKE OPERATING LLC
Well type
GAS
Approved
1990-08-22
Expires
1991-03-08
Proposed depth
7,550 ft
Surface casing
500 ft
Ground elevation
598 ft
Target formations
| Formation | Expected top (ft) |
|---|---|
| ATOKA UP | 2,370 |
| ATOKA MID | 2,570 |
| SPIRO | 3,900 |
| WAPANUCKA | 4,050 |
| CROMWELL | 4,200 |
| HUNTON | 4,850 |
| VIOLA | 4,960 |
| SIMPSON | 5,150 |
| ARBUCKLE | 5,450 |
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
35.220990, -95.111090
35.22099, -95.11109 · Surface location as filed with Oklahoma⌘ or Ctrl + scroll to zoom
Every well in Haskell County, Oklahoma
Oklahoma state record, from OK_wells_rbdms-wells.parquet. Corpus built 2026-09-11.