WELL · 42-485-40417 · DISTRICT 9
Krohn W. A. #12
Wichita County · Wichita County Regular field · Vertical
Krohn W. A. #12 (API 42-485-40417) is a plugged well in Wichita County, plugged July 3, 1997, last operated by Tomahawk Petroleum.
The RRC has issued one drilling permit, issued April 26, 1985, permitted to 2,000 ft.
It was permitted by Schalk, Thomas S. and has since transferred to Tomahawk Petroleum on the wellbore schedule.
Completion filings report one formation top, including Cisco.
Its lease has reported 725 barrels of oil and 16 mcf of gas since January 1993, last reporting in August 2003. The lease carries 13 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Schalk, Thomas S.; the EWA schedule now lists a different operator.
Lakehills, TX · P-5 Y, filed Jun 4, 2026
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Tomahawk Petroleum |
| Production reports | Tomahawk Petroleumthrough Nov 1994 |
| Latest permit | Schalk, Thomas S.Apr 26, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,000
- total depth, ft
- 1
- permits on file
- Apr 26, 1985
- last permit issued
- Jul 2, 1985
- completed
- 725
- cumulative oil, bbl
- 16
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Aug 2003
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 2, 1985
- Shut in
- —
- Plugged
- Jul 3, 1997
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 13 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Krohn, W. A. O-13-5568 | Wichita County Regular | Tomahawk Petroleum | 13 | 725 | 16 | Jan 1993 – Aug 2003 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Schalk, Thomas S.Jan 1993 → Apr 1994
- 2Brazos Petroleum, Inc.May 1994 → May 1994
- 3Tomahawk PetroleumOct 1994 → Nov 1994
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 273297-99 | Drill | Schalk, Thomas S. | Apr 18, 1985 | Apr 26, 1985 | — | 2,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-5568 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,780 | 1,795 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 1,855 | 7.875 | 410 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Aug 13, 1985 | Jul 29, 1985 | — |
| 00 | Aug 8, 1985 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-485-40417 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-485-40417 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/48540417, documented in the API reference.