42-135-43050
PRODUCING HorizontalHEADLEE
ECTOR County · District 8 · COG OPERATING LLC · SPRABERRY (TREND AREA)
Permits
1
Max Depth
12,000 ft
First Permit
2014-05-12
Latest Activity
2014-05-12
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2014-09-29
Shut-In
—
Plugged
—
P-5 Org Status: X
EWA / Permit operator mismatch
Scheduling: COG OPERATING LLC ≠ Permit: RSP PERMIAN, LLC
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
2010-02
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 (10) Elevation 2,970 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| RUSTLER | 1,942 ft | +1,028 ft |
| YATES | 3,088 ft | -118 ft |
| SEVEN RIVERS | 3,452 ft | -482 ft |
| QUEEN | 4,260 ft | -1,290 ft |
| GRAYBURG | 4,422 ft | -1,452 ft |
| SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres) | 4,861 ft | -1,891 ft |
| CLEARFORK (Clear Fork) | 7,540 ft | -4,570 ft |
| GLORIETA | — | — |
| HOLT | — | — |
| SANTA ROSA BASE (Santa Rosa) | — | — |
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 |
|---|---|
| 8,792–16,130 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 1,657 ft | 1,210 sx |
| 9.625" | 8,379 ft | 650 sx |
| 5.5" | 16,333 ft | 1,600 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
- 3911MS
- Max Depth
- 12,000 ft
- Drill Type
- Horizontal
- County
- ECTOR
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2014-09-29
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
- 4,538