WELL · 42-507-32505 · DISTRICT 1
Big Wells (San Miguel) Unit #J101
Zavala County · Big Wells (San Miguel) field · Vertical
Big Wells (San Miguel) Unit #J101 (API 42-507-32505) is a plugged well in Zavala County, plugged June 22, 2021, last operated by Trinity Operating (Usg) LLC.
The RRC has issued one drilling permit, issued November 3, 1994, permitted to 5,700 ft.
It was permitted by Oryx Energy Company and has since transferred to Trinity Operating (Usg) LLC on the wellbore schedule.
Completion filings report one formation top, including San Miguel.
Operator of record
Permitted by Oryx Energy Company; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Nov 4, 2025 · 392 permits on file · (888) 510-9581
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Trinity Operating (Usg) LLC |
| Production reports | Texas American Resources Companythrough Dec 2010 |
| Latest permit | Oryx Energy CompanyNov 3, 1994 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,700
- total depth, ft
- 1
- permits on file
- Nov 3, 1994
- last permit issued
- Dec 20, 1995
- completed
- 0
- cumulative oil, bbl
- 1.06M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 1995 THROUGH Jun 2021
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 20, 1995
- Shut in
- —
- Plugged
- Jun 22, 2021
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 |
|---|---|---|---|---|---|---|
| Big Wells (San Miguel) Unit G-1-157356 | Big Wells (San Miguel) | Trinity Operating (Usg), LLC | 1 | 0 | 1.06M | Dec 1995 – Jun 2021 |
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.
- 1Oryx Energy CompanyDec 1995 → Mar 1999
- 2Kerr-McGee CorporationApr 1999 → Sep 1999
- 3Kerr-McGee Oil & Gas Onshore LLCOct 1999 → Jan 2003
- 4Texas American Resources CompanyFeb 2003 → Dec 2010
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 429699-99 | Drill | Oryx Energy Company | Nov 3, 1994 | Nov 3, 1994 | Oct 7, 1995 | 5,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-1-157356 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 595 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Miguel | 5,324 | -4,729 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,324 | 5,352 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 620 | 12.25 | 425 S |
| 4.5 | 5,600 | 7.875 | 850 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 3, 1996 | Jan 5, 1996 | Yes |
| 00 | Mar 27, 1996 | — | — |
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 42-507-32505 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-32505 → 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/50732505, documented in the API reference.