WELL · 42-163-31940 · DISTRICT 1
Cook #1
Frio County · Pearsall (Austin Chalk) field · Horizontal
Cook #1 (API 42-163-31940) is a plugged horizontal well in Frio County, plugged October 1, 2012, last operated by Texokan Operating Inc..
The RRC has issued 2 drilling permits (amended once) between 1981 and 1990, permitted to 9,500 ft.
It was permitted by Weber Energy Corporation and has since transferred to Texokan Operating Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including San Miguel, Anacacho, Austin Chalk.
Its lease has reported 31.6K barrels of oil and 131 mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Permitted by Weber Energy Corporation; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed May 29, 2025 · 9 permits on file · (214) 769-4400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Texokan Operating Inc. |
| Production reports | Botasch Operating, LLCthrough Nov 2009 |
| Latest permit | Weber Energy CorporationApr 10, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,500
- total depth, ft
- 3
- permits on file
- Apr 10, 1990
- last permit issued
- Jul 3, 1990
- completed
- 31.6K
- cumulative oil, bbl
- 131
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 3, 1990
- Shut in
- —
- Plugged
- Oct 1, 2012
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cook O-1-12611 | Pearsall (Austin Chalk) | Texokan Operating, Inc. | 1 | 31.6K | 131 | Jan 1993 – Jul 2026 |
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.
- 1Weber Energy CorporationJan 1993 → Mar 1995
- 2Vermillion Production, Inc.Apr 1995 → Jun 1997
- 3Jab Operating, Inc.Jul 1997 → Mar 1999
- 4Core Energy CorporationMay 1999 → Jun 1999
- 5Core E & P Corp.Jul 1999 → Aug 2002
- 6Thalmann, David Vac Service IncFeb 2005 → Oct 2006
- 7Botasch Operating, LLCNov 2006 → Nov 2009
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 372025-98 | Reenter | Weber Energy Corporation | Aug 10, 1990 | Apr 10, 1990 | — | 9,500 |
| 372025-99 | Reenter | Weber Energy Corporation | Apr 10, 1990 | Apr 10, 1990 | — | 9,500 |
| 107289-99 | Drill | Dilley Production Co. | Feb 2, 1981 | Feb 2, 1981 | — | 7,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-12611 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 579 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Miguel | 6,000 | -5,421 |
| Anacacho | 6,785 | -6,206 |
| Austin ChalkTOP AUSTIN | 7,035 | -6,456 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,035 | 9,375 | Perforated |
| 7,107 | 7,508 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 132 | 14.75 | 135 S |
| 2.875 | 6,510 | — | — |
| 7 | 6,916 | 9.875 | 1,900 S |
| 4.5 | 7,560 | 6.125 | 130 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 | Sep 17, 1990 | Jul 16, 1990 | Yes |
| 00 | Aug 31, 1990 | — | — |
| 00 | Jan 12, 1984 | Jun 5, 1981 | — |
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 42-163-31940 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-31940 → 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/16331940, documented in the API reference.