42-317-39459
HorizontalMABEE 239
MARTIN County · District 8 · COG OPERATING LLC · SPRABERRY (TREND AREA)
Permits
3
Max Depth
13,000 ft
First Permit
2014-05-17
Latest Activity
2014-05-17
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2014-12-18
Shut-In
—
Plugged
—
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
2010-02
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 (13) Elevation 2,870 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SANTA ROSA | 1,344 ft | +1,526 ft |
| YATES | 2,931 ft | -61 ft |
| YATES | 3,005 ft | -135 ft |
| QUEEN | 4,023 ft | -1,153 ft |
| GRAYBURG | 4,680 ft | -1,810 ft |
| SAN ANDRES - ACTIVE CO2 FLOOD; H (San Andres) | 4,985 ft | -2,115 ft |
| SPRABERRY | 8,244 ft | -5,374 ft |
| DEAN | 9,534 ft | -6,664 ft |
| WOLFCAMP | 9,725 ft | -6,855 ft |
| WOLFCAMP | 9,726 ft | -6,856 ft |
| CISCO | — | — |
| PENNSYLVANIAN | — | — |
| STRAWN | — | — |
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 |
|---|---|
| 10,075–18,027 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 1,925 ft | 1,515 sx |
| 10.75" | 5,601 ft | 530 sx |
| 5.5" | 18,120 ft | 2,180 sx |
Permit History (3)
Applications (3)
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.
Well Details
- Well Number
- 306WB
- Max Depth
- 13,000 ft
- Drill Type
- Horizontal
- County
- MARTIN
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2014-12-18
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