42-163-32860
HorizontalSidetrackWEST SHINER RANCH
FRIO County · District 1 · FIRST ROCK INC. · PEARSALL (AUSTIN CHALK)
Permits
3
Max Depth
8,700 ft
First Permit
1990-09-24
Latest Activity
1991-05-20
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1991-06-20
Shut-In
—
Plugged
2023-08-29
EWA / Permit operator mismatch
Scheduling: FIRST ROCK INC. ≠ Permit: SANCHEZ-O'BRIEN OIL & GAS CORP.
Resolved via: scheduling → FIRST ROCK INC.
Production Summary Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
Cum Oil
— bbl
Cum Gas
— mcf
First Production
1993-01
Last Production
2026-07
Operator History
Chain of Custody
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (7) Elevation 485 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| QUEEN CITY | 1,180 ft | -695 ft |
| CARRIZO | 1,905 ft | -1,420 ft |
| WILCOX | 2,475 ft | -1,990 ft |
| OLMAS | 5,594 ft | -5,109 ft |
| OLMOS | 5,595 ft | -5,110 ft |
| ANACACHO | 6,925 ft | -6,440 ft |
| AUSTIN CHALK | 7,198 ft | -6,713 ft |
As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗
Perforations (2)
| Interval | Type |
|---|---|
| 7,225–8,532 ft | Perforated |
| 7,225–10,987 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 900 ft | 350 sx |
| 7" | 6,858 ft | 242 sx |
Permit History (3)
Applications (3)
Records & Logs
3 completion filings on record · 2 with log images at RRC.
Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 2
- Max Depth
- 8,700 ft
- Drill Type
- Horizontal, Sidetrack
- County
- FRIO
- District
- 1
- Operator
- FIRST ROCK INC.
- Completed
- 1991-06-20
Operator
- Name
- FIRST ROCK, INC
- Location
- CORPUS CHRI, ST
- P-5 Status
- Active (filed 2026-04-06)
- Cum Oil (all leases)
- 1,171,762 bbl
- Cum Gas (all leases)
- 823,441 mcf
- Activities
- CSGD/P, G/PUR, OPRS/O
- Total Permits
- 68