WELL · 42-163-33134 · DISTRICT 1
Shiner Ranch #7
Frio County · Pearsall (Austin Chalk) field · Horizontal
Shiner Ranch #7 (API 42-163-33134) is a plugged horizontal well in Frio County, plugged April 9, 2024, last operated by Blackbrush O & G LLC.
The RRC has issued one drilling permit, issued September 16, 1992, permitted to 7,500 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 Olmos, Anacacho, Austin Chalk.
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 CompanySep 16, 1992 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,500
- total depth, ft
- 1
- permits on file
- Sep 16, 1992
- last permit issued
- Oct 28, 1992
- 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
- Oct 28, 1992
- Shut in
- —
- Plugged
- Apr 9, 2024
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 |
|---|---|---|---|---|---|---|
| 403541-99 | Drill | Gemini Exploration Company | Sep 16, 1992 | Sep 16, 1992 | Sep 20, 1992 | 7,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-12693 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 482 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Olmos | 5,630 | -5,148 |
| Anacacho | 7,007 | -6,525 |
| Austin Chalk | 7,245 | -6,763 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,970 | 9,332 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 844 | 12.25 | 330 S |
| 7 | 6,970 | 8.75 | 640 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 | Mar 30, 1993 | Dec 22, 1992 | Yes |
| 00 | Mar 19, 1993 | — | — |
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 42-163-33134 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-33134 → 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/16333134, documented in the API reference.