WELL · 42-071-31979 · DISTRICT 3
Castro Unit No. 1 #1
Chambers County · Double Bayou (Frio 7) field · Vertical
Castro Unit NO. 1 #1 (API 42-071-31979) is a plugged well in Chambers County, plugged February 17, 2015, last operated by Fort Apache Energy Inc..
The RRC has issued 2 drilling permits between 1991 and 1993, permitted to 9,250 ft.
It was permitted by Apb Oil Corporation and has since transferred to Fort Apache Energy Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Anahuac, Frio.
Its 3 leases have reported 34.1K barrels of oil and 986K mcf of gas since January 1993, last reporting in February 2015. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Apb Oil Corporation; the EWA schedule now lists a different operator.
Boerne, TX · P-5 Y, filed Feb 4, 2026 · 84 permits on file · (713) 201-4361
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Fort Apache Energy Inc. |
| Production reports | Apb Oil Corporationthrough Jul 1995 |
| Latest permit | Apb Oil CorporationAug 5, 1993 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,250
- total depth, ft
- 2
- permits on file
- Aug 5, 1993
- last permit issued
- Nov 15, 1995
- completed
- 34.1K
- cumulative oil, bbl
- 986K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Feb 2015
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 15, 1995
- Shut in
- —
- Plugged
- Feb 17, 2015
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 3 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Castro Unit No. 1 G-3-148001 | Double Bayou (Frio 7) | Fort Apache Energy, Inc. | 1 | 0 | 724K | Sep 1993 – Feb 2015 |
| Castro Unit No. 1 O-3-21395 | Double Bayou (Frio A) | CBN Operating Corp. | 2 | 34.1K | 42.7K | Jan 1993 – Nov 1996 |
| Castro Unit No. 1 G-3-141129 | Daddy Schu (Frio) | Apb Oil Corporation | 1 | 0 | 220K | Jan 1993 – Aug 1993 |
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.
- 1Apb Oil CorporationJan 1993 → Jul 1995
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 414599-99 | Recompletion | Apb Oil Corporation | Aug 4, 1993 | Aug 5, 1993 | Aug 10, 1993 | 9,200 |
| 392820-99 | Drill | Apb Oil Corporation | Oct 11, 1991 | Oct 21, 1991 | Nov 1, 1991 | 9,250 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-141129 | — | — | — | — |
| — | — G-3-148001 | — | — | — | — |
| — | — O-3-21395 | — | — | — | — |
| — | — O-3-21395 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 12 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,375 | 8,379 | Perforated |
| 8,394 | 8,406 | Perforated |
| 9,030 | 9,035 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,075 | 11 | 298 S |
| 8.625 | 1,075 | 11.25 | 298 S |
| 5.5 | 9,200 | 7.875 | 440 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 20, 1996 | Mar 20, 1996 | — |
| 00 | May 4, 1994 | Nov 29, 1993 | Yes |
| 00 | Feb 24, 1994 | — | — |
| 00 | May 14, 1992 | Feb 18, 1992 | Yes |
| 00 | Apr 21, 1992 | Feb 18, 1992 | Yes |
| 00 | Apr 21, 1992 | — | Yes |
| 00 | Apr 10, 1992 | — | — |
| 00 | Mar 23, 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 42-071-31979 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-071-31979 → 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/07131979, documented in the API reference.