WELL · 42-493-32331 · DISTRICT 1
Thoms "C" #4
Wilson County · Horizontal
Thoms "C" #4 (API 42-493-32331) is a permitted horizontal well in Wilson County filed by First Rock, Inc.; no completion report is on file yet.
The RRC has issued 3 drilling permits (amended once) between 1992 and 2002, permitted to 9,000 ft.
Completion filings report 6 formation tops, including Lit, Anacacho, Austin Chalk, Eagle Ford.
Its 2 leases have reported 20.8K barrels of oil and 4.15K mcf of gas since January 1993, last reporting in July 2022. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Corpus Christ, TX · P-5 Y, filed Feb 4, 2026 · 68 permits on file · (361) 215-5559
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | First Rock, Inc.through May 2021 |
| Latest permit | First Rock, Inc.Dec 11, 2002 |
- 9,000
- total depth, ft
- 4
- permits on file
- Dec 11, 2002
- last permit issued
- —
- completed
- 20.8K
- cumulative oil, bbl
- 4.15K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2022
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
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 2 leases this well is completed on; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Thoms -C- O-1-13517 | Marcelina Creek (Buda) | First Rock, Inc. | 1 | 9.64K | 795 | Jan 1993 – Jul 2022 |
| Thoms O-1-14402 | Marcelina Creek (Austin Chalk) | First Rock, Inc. | 2 | 11.2K | 3.36K | Oct 2002 – Jul 2022 |
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.
- 1Texlark Exploration Company, IncJan 1993 → Jul 1994
- 2Pedeco, Inc.Mar 1997 → Mar 1997
- 3First Rock, Inc.Feb 2001 → May 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 526099-99 | Recompletion | First Rock, Inc. | Dec 5, 2002 | Dec 11, 2002 | Sep 30, 2002 | 7,500 |
| 469827-98 | Recompletion | Pedeco, Inc. | Mar 17, 1999 | Nov 13, 1997 | — | 8,500 |
| 469827-99 | Recompletion | Pedeco, Inc. | Nov 7, 1997 | Nov 13, 1997 | — | 9,000 |
| 396680-99 | Drill | Texlark Exploration Company, Inc | Feb 14, 1992 | Mar 3, 1992 | Mar 28, 1992 | 7,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-13517 | — | — | — | — |
| — | — O-1-14402 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 408 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Lit | 6,205 | -5,797 |
| Anacacho | 7,070 | -6,662 |
| Austin ChalkAUSTIN | 7,205 | -6,797 |
| Austin Chalk | 7,205 | -6,797 |
| Eagle Ford | 7,490 | -7,082 |
| Buda | 7,550 | -7,142 |
| Del Rio | 7,680 | -7,272 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,359 | 7,489 | Perforated |
| 7,632 | 7,672 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 830 | 12.25 | 325 S |
| 4.5 | 1,000 | 7.875 | 190 S |
| 4.5 | 6,696 | 7.875 | 910 S |
| 4.5 | 7,697 | 7.875 | 190 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 | Apr 9, 2003 | Nov 4, 2002 | Yes |
| 00 | Feb 5, 2003 | — | — |
| 00 | May 22, 1992 | May 13, 1992 | Yes |
| 00 | May 19, 1992 | — | — |
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 42-493-32331 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-493-32331 → 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/49332331, documented in the API reference.