42-237-39463
PRODUCINGHENDERSON
JACK County · District 9 · MAMMOTH OPERATING LLC · JACK COUNTY REGULAR
Permits
2
Max Depth
450 ft
First Permit
2011-08-26
Latest Activity
2011-08-26
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2012-07-20
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: MAMMOTH OPERATING LLC ≠ Permit: COMSTOCK ENERGY, LLC
Resolved via: production → MAMMOTH OPERATING 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
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 (2)
CSV| Formation | Top Depth (MD) |
|---|---|
| GUNSIGHT LIME (Gunsight) | 352 ft |
| GUNSIGHT SAND (Gunsight) | 370 ft |
As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. View filings & logs at RRC ↗
Casing (1)
| Size | Set Depth | Cement |
|---|---|---|
| 4.5" | 463 ft | 160 sx |
Permit History (2)
Applications (2)
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 can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 12C
- Max Depth
- 450 ft
- Drill Type
- Vertical
- County
- JACK
- District
- 9
- Operator
- MAMMOTH OPERATING LLC
- Completed
- 2012-07-20
Operator
- Name
- MAMMOTH OPER LLC
- Location
- SPICEWOOD
- P-5 Status
- Active (filed 2025-12-01)
- Cum Oil (all leases)
- 7,282 bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/O
- Total Permits
- 2