WELL · 42-041-31519 · DISTRICT 3
Armstrong Unit #1
Brazos County · Giddings (Buda) field · Horizontal · Sidetrack
Armstrong Unit #1 (API 42-041-31519) is a plugged horizontal well in Brazos County, plugged December 22, 2022, last operated by Baytex Energy USA Inc..
The RRC has issued 2 drilling permits between 1991 and 2000, permitted to 9,900 ft.
It was permitted by Williams, Clayton Energy, Inc. and has since transferred to Baytex Energy USA Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including Pecan Gap, Austin Chalk, False Buda.
Its 2 leases have reported 98.6K barrels of oil and 1.45M mcf of gas since January 1993, last reporting in March 2024. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Williams, Clayton Energy, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 15, 2025
- Permits on file
- 120
- Phone
- (713) 722-6500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Baytex Energy USA Inc. |
| Production reports | Lonestar Operating, LLCthrough May 2020 |
| Latest permit | Williams, Clayton Energy, Inc.Dec 11, 2000 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,900
- total depth, ft
- 2
- permits on file
- Dec 11, 2000
- last permit issued
- Feb 4, 2001
- completed
- 98.6K
- cumulative oil, bbl
- 1.45M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Mar 2024
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 4, 2001
- Shut in
- —
- Plugged
- Dec 22, 2022
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Armstrong Unit O-3-23962 | Giddings (Buda) | Baytex Energy USA, Inc. | 1 | 61.9K | 1.21M | Feb 2001 – Mar 2024 |
| Armstrong Unit O-3-21346 | Giddings (Austin Chalk-3) | Williams, Clayton Energy, Inc. | 1 | 36.7K | 235K | Jan 1993 – Apr 2001 |
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.
- 1Williams, Clayton W., Jr., Inc.Jan 1993 → Apr 1993
- 2Williams, Clayton Energy, L.L.CMay 1993 → May 1993
- 3Williams, Clayton Energy, Inc.Jun 1993 → Feb 2014
- 4Lonestar Operating, LLCMar 2014 → Dec 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 502872-99 | Recompletion · sidetrack | Williams, Clayton Energy, Inc. | Dec 11, 2000 | Dec 11, 2000 | Dec 6, 2000 | 9,900 |
| 390645-99 | Drill | Williams, Clayton W., Jr., Inc. | Aug 7, 1991 | Aug 8, 1991 | Oct 21, 1991 | 9,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 4, 2001 | Armstrong Unit O-3-23962 | Giddings (Buda) | Baytex Energy USA Inc. | Plugged | — |
| Jan 14, 1992 | Armstrong Unit O-3-21346 | Giddings (Austin Chalk-3) | Williams Clayton Energy Inc. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 24 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pecan Gap | 7,848 | -7,824 |
| Austin Chalk | 8,873 | -8,849 |
| False Buda | 9,635 | -9,611 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,865 | 13,239 | Perforated |
| 8,877 | 12,840 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,434 | 14.75 | 1,490 S |
| 7.625 | 8,877 | 9.875 | 1,155 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 17, 2001 | Mar 7, 2001 | Yes |
| 00 | Mar 28, 2001 | Jan 21, 1992 | Yes |
| 00 | Feb 7, 1992 | Jan 21, 1992 | Yes |
| 00 | Feb 4, 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 42-041-31519 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-041-31519 → 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/04131519, documented in the API reference.