42-173-32662
Final CompletionCALVERLEY
GLASSCOCK County · District 8 · FED OPERATING LLC · COBRA (WOLFCAMP)
Permits
1
Max Depth
8,300 ft
First Permit
1996-07-29
Latest Activity
1996-07-29
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1996-09-04
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: FED OPERATING LLC ≠ Production: DIAMONDBACK E&P LLC (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: FED OPERATING LLC ≠ Permit: DYAD PETROLEUM COMPANY
Resolved via: production → DIAMONDBACK E&P 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
1996-09
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 (4) Elevation 2,545 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CLEARFORK (Clear Fork) | 5,845 ft | -3,300 ft |
| SPRAYBERRY (Spraberry) | 6,110 ft | -3,565 ft |
| DEAN | 7,432 ft | -4,887 ft |
| WOLFCAMP | 7,614 ft | -5,069 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 |
|---|---|
| 7,806–7,837 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 12.75" | 401 ft | 400 sx |
| 8.625" | 3,272 ft | 700 sx |
| 5.5" | 8,200 ft | 730 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 can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 1
- Max Depth
- 8,300 ft
- Drill Type
- Vertical
- County
- GLASSCOCK
- District
- 8
- Operator
- FED OPERATING LLC
- Completed
- 1996-09-04
Operator
- Name
- FED OPER LLC
- Location
- MIDLAND
- P-5 Status
- X (filed 2026-05-07)
- Cum Oil (all leases)
- 241,632 bbl
- Cum Gas (all leases)
- 877,375 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 6