42-461-33812
Final CompletionPEGASUS SPRABERRY UNIT
UPTON County · District 7 · COG OPERATING LLC · PEGASUS (CONSOLIDATED)
Permits
1
Max Depth
8,800 ft
First Permit
1997-06-30
Latest Activity
1997-06-30
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1997-10-18
Shut-In
—
Plugged
2023-06-22
EWA / Permit operator mismatch
Scheduling: COG OPERATING LLC ≠ Permit: MOBIL PRODUCING TX. & N.M. INC.
Resolved via: production → COG 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 (3) Elevation 2,863 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CLEARFORK (Clear Fork) | 6,868 ft | -4,005 ft |
| SPRABERRY | 7,664 ft | -4,801 ft |
| JO MILL | 8,484 ft | -5,621 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 (2)
| Interval | Type |
|---|---|
| 7,703–7,869 ft | Perforated |
| 8,493–8,537 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 390 ft | 110 sx |
| 4.5" | 8,650 ft | 1,630 sx |
Permit History (1)
Applications (1)
Records & Logs
3 completion filings on record · 2 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.
No GPS coordinates yet
Well Details
- Well Number
- 4216
- Max Depth
- 8,800 ft
- Drill Type
- Vertical
- County
- UPTON
- District
- 7
- Operator
- COG OPERATING LLC
- Completed
- 1997-10-18
Operator
- Name
- COG OPER LLC
- Location
- MIDLAND
- P-5 Status
- X (filed 2026-06-02)
- Cum Oil (all leases)
- 645,285,792 bbl
- Cum Gas (all leases)
- 305,183,488 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 4,550