42-329-42649
Final Completion HorizontalSPANISH TRAIL 3-10 HZ UNIT
MIDLAND County · District 8 · COG OPERATING LLC · SPRABERRY (TREND AREA)
Permits
3
Max Depth
12,000 ft
First Permit
2018-07-24
Latest Activity
2018-12-31
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2019-05-08
Shut-In
—
Plugged
—
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
2016-12
Last Production
2026-07
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (10) Elevation 2,880 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SANTA ROSA | 1,053 ft | +1,827 ft |
| YATES | 2,938 ft | -58 ft |
| SEVEN RIVERS | 3,153 ft | -273 ft |
| QUEEN | 3,801 ft | -921 ft |
| GRAYBURG | 4,199 ft | -1,319 ft |
| SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres) | 4,734 ft | -1,854 ft |
| GLORIETA | 5,480 ft | -2,600 ft |
| CLEARFORK (Clear Fork) | 7,229 ft | -4,349 ft |
| SPRABERRY | 8,119 ft | -5,239 ft |
| SPRABERRY UPPER-DEAN (Spraberry) | 8,319 ft | -5,439 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 ↗
Offset Well Tops (nearest 8 wells with tops)
What nearby completed wells reported.
Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).
Perforations (1)
| Interval | Type |
|---|---|
| 9,554–15,986 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 1,661 ft | 1,120 sx |
| 9.625" | 8,621 ft | 810 sx |
| 5.5" | 16,061 ft | 1,600 sx |
Permit History (3)
Applications (3)
Records & Logs
2 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.
Well Details
- Well Number
- 3421H
- Max Depth
- 12,000 ft
- Drill Type
- Horizontal
- County
- MIDLAND
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2019-05-08
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