42-461-02804
Final CompletionPEGASUS PENNSYLVANIAN UNIT
UPTON County · District 7 · COG OPERATING LLC · PEGASUS (PENNSYLVANIAN)
Permits
3
Max Depth
10,727 ft
First Permit
1978-11-28
Latest Activity
1992-10-15
Lifespan
14 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1992-12-11
Shut-In
—
Plugged
—
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 2,891 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| WOLFCAMP | 9,130 ft | -6,239 ft |
| STRAWN | 10,100 ft | -7,209 ft |
| PENNSYLVANIAN | 10,334 ft | -7,443 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 (3)
| Interval | Type |
|---|---|
| 7,805–8,386 ft | Perforated |
| 9,306–10,012 ft | Perforated |
| 10,632–10,694 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 476 ft | 400 sx |
| 7.625" | 4,710 ft | 2,000 sx |
| 7.625" | 4,726 ft | 2,000 sx |
| 2.375" | 8,445 ft | — |
| 2.375" | 10,147 ft | — |
Permit History (3)
Applications (3)
Records & Logs
6 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
- 5403
- Max Depth
- 10,727 ft
- Drill Type
- Vertical
- County
- UPTON
- District
- 7
- Operator
- COG OPERATING LLC
- Completed
- 1992-12-11
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