42-317-34925
Final CompletionGLASS G.W. B
MARTIN County · District 8 · COG OPERATING LLC · SPRABERRY (TREND AREA)
Permits
1
Max Depth
11,000 ft
First Permit
2007-05-22
Latest Activity
2007-05-22
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2008-07-27
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: COG OPERATING LLC ≠ Production: CUTBOW OPERATING, LLC (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: COG OPERATING LLC ≠ Permit: THOMPSON, J. CLEO
Resolved via: production → CUTBOW 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
1993-01
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 2,843 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| GRAYBURG | 4,428 ft | -1,585 ft |
| UPPER SPRABERRY (Spraberry) | 7,878 ft | -5,035 ft |
| LOWER SPRABERRY (Spraberry) | 8,377 ft | -5,534 ft |
| DEAN | 9,145 ft | -6,302 ft |
| WOLFCAMP | 9,352 ft | -6,509 ft |
| STRAWN | 10,490 ft | -7,647 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 |
|---|---|
| 8,145–10,612 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 360 ft | 400 sx |
| 8.625" | 5,235 ft | 1,200 sx |
| 5.5" | 10,782 ft | 1,200 sx |
Permit History (1)
Applications (1)
Records & Logs
3 completion filings on record · 2 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
- 12
- Max Depth
- 11,000 ft
- Drill Type
- Vertical
- County
- MARTIN
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2008-07-27
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