WELL · 42-163-33093 · DISTRICT 1
Shiner Ranch #3
Frio County · Pearsall (Austin Chalk) field · Horizontal
Shiner Ranch #3 (API 42-163-33093) is a plugged horizontal well in Frio County, plugged September 10, 2019, last operated by Blackbrush O & G LLC.
The RRC has issued one drilling permit, issued August 9, 1991, permitted to 7,600 ft.
It was permitted by Gemini Exploration Company and has since transferred to Blackbrush O & G LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Wilcox, Olmos, Anacacho.
Its lease has reported 871K barrels of oil and 387K mcf of gas since January 1993, last reporting in July 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Gemini Exploration Company; the EWA schedule now lists a different operator.
- Based in
- San Antonio, TX
- P-5 status
- Active (A)
- P-5 last filed
- Sep 16, 2025
- Permits on file
- 339
- Phone
- (210) 495-5577
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Blackbrush O & G LLC |
| Production reports | Blackbrush O & G, LLCthrough Jul 2024 |
| Latest permit | Gemini Exploration CompanyAug 9, 1991 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,600
- total depth, ft
- 1
- permits on file
- Aug 9, 1991
- last permit issued
- Aug 5, 1991
- completed
- 871K
- cumulative oil, bbl
- 387K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 5, 1991
- Shut in
- —
- Plugged
- Sep 10, 2019
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; they carry 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Shiner Ranch O-1-12693 | Pearsall (Austin Chalk) | Blackbrush O & G, LLC | 8 | 871K | 387K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 0 · prior 12 7(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Gemini Exploration CompanyJan 1993 → Apr 1995
- 2Union Pacific Austin Chalk Co.May 1995 → Dec 1996
- 3Costilla Petroleum CorporationJan 1997 → Jan 1997
- 4Costilla Energy, Inc.Feb 1997 → Mar 1999
- 5Petra Oleum Corp.Apr 1999 → May 2001
- 6Arcadia Expl. & Prod. CompanyJun 2001 → Jul 2001
- 7Triumph Petroleum Company,l.l.c.Aug 2001 → Jan 2005
- 8Blackbrush O & G, Inc.Feb 2005 → Apr 2012
- 9Blackbrush O & G, LLCJun 2012 → Jul 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 390764-99 | Drill | Gemini Exploration Company | Aug 9, 1991 | Aug 9, 1991 | Aug 12, 1991 | 7,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-12693 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 480 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,011 | 11,148 | Perforated |
| 7,038 | 11,415 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 797 | 12.25 | 320 S |
| 7 | 6,955 | 8.75 | 280 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 | Nov 25, 1991 | Oct 21, 1991 | Yes |
| 00 | Nov 19, 1991 | — | — |
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 42-163-33093 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-33093 → 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/16333093, documented in the API reference.