42-507-32335
Final Completion HorizontalGLASSCOCK RANCH A
ZAVALA County · District 1 · TRINITY OPERATING (USG) LLC · PEARSALL (AUSTIN CHALK)
Permits
3
Max Depth
7,000 ft
First Permit
1990-06-08
Latest Activity
1992-10-01
Lifespan
2 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1990-09-03
Shut-In
—
Plugged
2022-05-03
EWA / Production operator mismatch
Scheduling: TRINITY OPERATING (USG) LLC ≠ Production: MATADOR PRODUCTION COMPANY (reported 2021-07)
EWA / Permit operator mismatch
Scheduling: TRINITY OPERATING (USG) LLC ≠ Permit: WINN EXPLORATION CO., INC.
Resolved via: scheduling → TRINITY OPERATING (USG) LLC
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
2024-05
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 (2) Elevation 678 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SAN MIGUEL | 5,304 ft | -4,626 ft |
| AUSTIN CHALK | 6,184 ft | -5,506 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 (3)
| Interval | Type |
|---|---|
| 5,304–5,360 ft | Perforated |
| 5,886–9,938 ft | Perforated |
| 6,184–9,596 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 749 ft | — |
| 7" | 5,886 ft | — |
Permit History (3)
Applications (3)
Records & Logs
4 completion filings on record · 1 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
- 28
- Max Depth
- 7,000 ft
- Drill Type
- Horizontal
- County
- ZAVALA
- District
- 1
- Operator
- TRINITY OPERATING (USG) LLC
- Completed
- 1990-09-03
Operator
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-01-28)
- Cum Oil (all leases)
- 22,515,031 bbl
- Cum Gas (all leases)
- 284,930,581 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 391