42-163-34355
SHUT IN HorizontalMARRS MCLEAN
FRIO County · District 1 · TRAILBLAZER ENERGY RESOURCES LLC · BRISCOE RANCH (EAGLEFORD)
Permits
1
Max Depth
6,645 ft
First Permit
2025-03-11
Latest Activity
2025-03-11
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2025-04-05
Shut-In
—
Plugged
—
P-5 Org Status: Active
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
2013-09
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 (11) Elevation 610 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| MIDWAY SHALE (Midway) | 2,989 ft | -2,379 ft |
| ESCONDIDO | 3,175 ft | -2,565 ft |
| OLMOS | 4,300 ft | -3,690 ft |
| ANACACHO | 5,297 ft | -4,687 ft |
| AUSTIN CHALK - H2S (Austin Chalk) | 5,709 ft | -5,099 ft |
| EAGLE FORD - H2S (Eagle Ford) | 6,278 ft | -5,668 ft |
| BUDA - H2S (Buda) | — | — |
| GEORGETOWN - H2S (Georgetown) | — | — |
| NAVARRO | — | — |
| PEARSALL | — | — |
| QUEEN CITY | — | — |
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 |
|---|---|
| 6,516–19,689 ft | Open hole |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 2,861 ft | 690 sx |
| 9.625" | 2,864 ft | 690 sx |
| 5.5" | 19,710 ft | 3,575 sx |
| 5.5" | 19,748 ft | 3,575 sx |
Permit History (1)
Applications (1)
Records & Logs
2 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.
Well Details
- Well Number
- 12H
- Max Depth
- 6,645 ft
- Drill Type
- Horizontal
- County
- FRIO
- District
- 1
- Operator
- TRAILBLAZER ENERGY RESOURCES LLC
- Completed
- 2025-04-05
Operator
- Location
- TULSA
- P-5 Status
- Active (filed 2025-10-16)
- Cum Oil (all leases)
- 2,366,578 bbl
- Cum Gas (all leases)
- 3,279,529 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/G, OPRS/G, OPRS/O
- Total Permits
- 28