WELL · 42-059-35691 · DISTRICT 7
Isenhower #12
Callahan County · Callahan County Regular field · Vertical
Isenhower #12 (API 42-059-35691) is a plugged well in Callahan County, plugged May 8, 2008, last operated by Clausen A. G..
The RRC has issued one drilling permit, issued November 26, 1986, permitted to 500 ft.
It was permitted by A.E.N. Energy, Inc. and has since transferred to Clausen A. G. on the wellbore schedule.
Completion filings report one formation top, including Cook Sand.
Its lease has reported 9.76K barrels of oil and 59 mcf of gas since January 1993, last reporting in July 2026. The lease carries 15 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by A.E.N. Energy, Inc.; the EWA schedule now lists a different operator.
Cross Plains, TX · P-5 Y, filed Dec 4, 2025 · 4 permits on file · (325) 260-6525
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Clausen A. G. |
| Production reports | Clausen, A. G.through Mar 2026 |
| Latest permit | A.E.N. Energy, Inc.Nov 26, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 500
- total depth, ft
- 1
- permits on file
- Nov 26, 1986
- last permit issued
- Sep 9, 1991
- completed
- 9.76K
- cumulative oil, bbl
- 59
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 9, 1991
- Shut in
- —
- Plugged
- May 8, 2008
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 15 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Isenhower O-8-18925 | Callahan County Regular | Clausen, A. G. | 15 | 9.76K | 59 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 13 · prior 12 46(-72%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1A.E.N. Energy, Inc.Jan 1993 → Oct 1995
- 2A.E.N. EnergyNov 1995 → Oct 1997
- 3Crude Production CompanyDec 1997 → Mar 2005
- 4Clausen, A. G.Sep 2008 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 323561-99 | Drill | A.E.N. Energy, Inc. | Nov 25, 1986 | Nov 26, 1986 | — | 500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-18925 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,630 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Cook Sand | 440 | 1,190 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 326 | 358 | Perforated |
| 440 | 446 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 490 | 7.875 | 90 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 | May 12, 1992 | Mar 16, 1992 | — |
| 00 | May 19, 1987 | Apr 28, 1987 | Yes |
| 00 | May 13, 1987 | — | — |
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 42-059-35691 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-059-35691 → 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/05935691, documented in the API reference.