Permits
1
Max Depth
13,000 ft
First Permit
2010-06-29
Latest Activity
2010-06-29
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2010-09-01
Shut-In
—
Plugged
2020-03-27
EWA / Permit operator mismatch
Scheduling: COG OPERATING LLC ≠ Permit: RELIANCE ENERGY, 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
2008-04
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 (6) Elevation 2,893 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CLEARFORK (Clear Fork) | 6,931 ft | -4,038 ft |
| SPRABERRY | 8,182 ft | -5,289 ft |
| DEAN | 9,358 ft | -6,465 ft |
| WOLFCAMP | 9,574 ft | -6,681 ft |
| STRAWN | 10,751 ft | -7,858 ft |
| ATOKA | 10,966 ft | -8,073 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 |
|---|---|
| 8,482–10,657 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 360 ft | 375 sx |
| 8.625" | 5,214 ft | 910 sx |
| 5.5" | 11,960 ft | 1,200 sx |
Permit History (1)
Applications (1)
Records & Logs
1 completion filing 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
- 4603R
- Max Depth
- 13,000 ft
- Drill Type
- Vertical
- County
- ANDREWS
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2010-09-01
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
- 4,547