42-507-32057
Final Completion HorizontalDirectionalGLASSCOCK RANCH A
ZAVALA County · District 1 · TRINITY OPERATING (USG) LLC · PEARSALL (AUSTIN CHALK)
Permits
3
Max Depth
7,500 ft
First Permit
1984-06-21
Latest Activity
1989-08-03
Lifespan
5 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1989-11-26
Shut-In
—
Plugged
2022-04-18
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 (6) Elevation 665 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| ESCONDIDO | 3,346 ft | -2,681 ft |
| ESCONIDIDO | 3,346 ft | -2,681 ft |
| OLMOS | 4,508 ft | -3,843 ft |
| SAN MIGUEL | 5,311 ft | -4,646 ft |
| ANACACHO | 5,872 ft | -5,207 ft |
| AUSTIN CHALK | 6,200 ft | -5,535 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 |
|---|---|
| 6,200–6,612 ft | Perforated |
| 6,235–6,700 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 251 ft | 235 sx |
| 7" | 6,235 ft | — |
Permit History (3)
Applications (3)
Records & Logs
3 completion filings on record.
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
- 10
- Max Depth
- 7,500 ft
- Drill Type
- Horizontal, Directional
- County
- ZAVALA
- District
- 1
- Operator
- TRINITY OPERATING (USG) LLC
- Completed
- 1989-11-26
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