42-329-37957
PRODUCINGSPANISH TRAIL
MIDLAND County · District 8 · COG OPERATING LLC · SPRABERRY (TREND AREA)
Permits
1
Max Depth
12,000 ft
First Permit
2012-03-13
Latest Activity
2012-03-13
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2012-09-18
Shut-In
—
Plugged
—
P-5 Org Status: X
EWA / Permit operator mismatch
Scheduling: COG OPERATING LLC ≠ Permit: E.G.L. RESOURCES, 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
2008-06
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 (6) Elevation 2,878 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| UPPER SPRABERRY (Spraberry) | 7,947 ft | -5,069 ft |
| LOWER SPRABERRY (Spraberry) | 8,425 ft | -5,547 ft |
| DEAN | 9,412 ft | -6,534 ft |
| UPPER WOLFCAMP (Wolfcamp) | 9,710 ft | -6,832 ft |
| MIDDLE WOLFCAMP (Wolfcamp) | 10,096 ft | -7,218 ft |
| LOWER WOLFCAMP (Wolfcamp) | 10,550 ft | -7,672 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 (6)
| Interval | Type |
|---|---|
| 7,947–8,053 ft | Perforated |
| 8,425–8,982 ft | Perforated |
| 9,412–9,502 ft | Perforated |
| 9,710–9,730 ft | Perforated |
| 10,096–10,116 ft | Perforated |
| 10,300–10,590 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 322 ft | 400 sx |
| 5.5" | 10,806 ft | 1,655 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 can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 3811
- Max Depth
- 12,000 ft
- Drill Type
- Vertical
- County
- MIDLAND
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2012-09-18
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