42-461-43008
PRODUCING HorizontalBIG BERTHA 0310 F
UPTON County · District 9 · FIREBIRD ENERGY II LLC · SPRABERRY (TREND AREA)
Permits
1
Max Depth
9,100 ft
First Permit
2024-10-30
Latest Activity
2024-10-30
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2026-01-14
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
2026-01
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 2,893 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| YATES | 3,018 ft | -125 ft |
| GRAYBURG | 4,197 ft | -1,304 ft |
| SAN ANDRES - SALTWATER FLOW (San Andres) | 4,512 ft | -1,619 ft |
| SPRABERRY | 7,767 ft | -4,874 ft |
| WOLFCAMP | 9,006 ft | -6,113 ft |
| DEVONIAN | — | — |
| ELLENBURGER | — | — |
| FUSSELMAN | — | — |
| STRAWN | — | — |
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 |
|---|---|
| 9,293–19,861 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 1,262 ft | 1,145 sx |
| 9.625" | 8,155 ft | 1,625 sx |
| 6" | 19,895 ft | 2,385 sx |
Permit History (1)
Applications (1)
Records & Logs
1 completion filing on record · 1 with log images at RRC.
Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.
Well Details
- Well Number
- 401H
- Max Depth
- 9,100 ft
- Drill Type
- Horizontal
- County
- UPTON
- District
- 9
- Operator
- FIREBIRD ENERGY II LLC
- Completed
- 2026-01-14
Operator
- Name
- FIREBIRD ENGY II LLC
- Location
- FORT WORTH
- P-5 Status
- Active (filed 2024-08-12)
- Cum Oil (all leases)
- 23,997,132 bbl
- Cum Gas (all leases)
- 1,871,845 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 261