42-237-39451
INJECTIONHENDERSON
JACK County · District 9 · MAMMOTH OPERATING LLC · JACK COUNTY REGULAR
Permits
1
Max Depth
450 ft
First Permit
2011-08-29
Latest Activity
2011-08-29
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2013-10-23
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
Injection / Disposal
Permitted Volume
50 bbl/d
Max Pressure
185 psi
Injection Interval
370–430 ft
Injected (12mo)
274 bbl
Monthly injected volume (bbl, from H-10 filings through 2025-10-01)
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) Elevation 979 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| GUNSIGHT LIME (Gunsight) | 315 ft | +664 ft |
| GUNSIGHT SAND (Gunsight) | 370 ft | +609 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 (1)
| Interval | Type |
|---|---|
| 409–414 ft | Perforated |
Casing (1)
| Size | Set Depth | Cement |
|---|---|---|
| 4.5" | 439 ft | 150 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.
No GPS coordinates yet
Well Details
- Well Number
- 1C
- Max Depth
- 450 ft
- Drill Type
- Vertical
- County
- JACK
- District
- 9
- Operator
- MAMMOTH OPERATING LLC
- Completed
- 2013-10-23
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