42-389-33039
Final Completion HorizontalBIG CHIEF
REEVES County · District 8 · COG OPERATING LLC · WOLFBONE (TREND AREA)
Permits
3
Max Depth
12,000 ft
First Permit
2011-10-11
Latest Activity
2013-04-17
Lifespan
2 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2011-12-23
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: COG OPERATING LLC ≠ Production: SCOUT ENERGY MANAGEMENT LLC (reported 2026-04)
Resolved via: production → SCOUT ENERGY MANAGEMENT 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
2011-06
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 2,932 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| DELAWARE | 5,231 ft | -2,299 ft |
| BONE SPRING | 7,961 ft | -5,029 ft |
| WOLF CAMP | 10,134 ft | -7,202 ft |
| WOLFCAMP | 10,134 ft | -7,202 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 |
|---|---|
| 10,733–14,445 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 1,516 ft | 1,150 sx |
| 13.375" | 1,519 ft | 1,150 sx |
| 9.625" | 5,015 ft | 1,450 sx |
| 9.625" | 5,017 ft | 1,450 sx |
| 7" | 11,107 ft | 1,400 sx |
Permit History (3)
Applications (4)
Records & Logs
3 completion filings on record · 1 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
- 4715H
- Max Depth
- 12,000 ft
- Drill Type
- Horizontal
- County
- REEVES
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2011-12-23
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