42-507-33477
HorizontalCENIZO A
ZAVALA County · District 1 · TRINITY OPERATING (USG) LLC · BRISCOE RANCH (EAGLEFORD)
Permits
2
Max Depth
8,000 ft
First Permit
2022-09-02
Latest Activity
2022-09-02
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2023-09-23
Shut-In
—
Plugged
—
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
2020-06
Last Production
2026-07
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (9) Elevation 618 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| MIDWAY | 3,266 ft | -2,648 ft |
| ESCONDIDO | 3,661 ft | -3,043 ft |
| OLMOS | 4,730 ft | -4,112 ft |
| SAN MIGUEL | 5,785 ft | -5,167 ft |
| ANACACHO | 6,174 ft | -5,556 ft |
| AUSTIN (Austin Chalk) | 6,525 ft | -5,907 ft |
| UPPER EAGLE FORD (Eagle Ford) | 7,031 ft | -6,413 ft |
| LOWER EAGLE FORD (Eagle Ford) | 7,150 ft | -6,532 ft |
| ESCONDIDO - DISPOSAL (Escondido) | — | — |
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 ↗
Offset Well Tops (nearest 8 wells with tops)
What nearby completed wells reported.
Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).
Perforations (1)
| Interval | Type |
|---|---|
| 7,573–16,862 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 3,358 ft | 851 sx |
| 5.5" | 16,883 ft | 2,682 sx |
Permit History (2)
Applications (2)
Records & Logs
2 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.
Well Details
- Well Number
- 128H
- Max Depth
- 8,000 ft
- Drill Type
- Horizontal
- County
- ZAVALA
- District
- 1
- Operator
- TRINITY OPERATING (USG) LLC
- Completed
- 2023-09-23
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