42-173-37725
PRODUCING HorizontalCALVERLEY 37-36
GLASSCOCK County · District 8 · COG OPERATING LLC · SPRABERRY (TREND AREA)
Permits
1
Max Depth
12,000 ft
First Permit
2017-10-18
Latest Activity
2017-10-18
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2018-12-19
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
2017-12
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 2,708 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SANTA ROSA | 1,431 ft | +1,277 ft |
| YATES | 2,069 ft | +639 ft |
| SEVEN RIVERS | 2,115 ft | +593 ft |
| QUEEN | 2,615 ft | +93 ft |
| GLORIETA | 3,180 ft | -472 ft |
| GRAYBURG | 3,333 ft | -625 ft |
| SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres) | 3,800 ft | -1,092 ft |
| CLEARFORK (Clear Fork) | 5,496 ft | -2,788 ft |
| SPRABERRY | 6,613 ft | -3,905 ft |
| WICHITA ALBANY (Wichita-Albany) | 7,210 ft | -4,502 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 |
|---|---|
| 8,959–18,887 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 519 ft | 540 sx |
| 9.625" | 8,046 ft | 710 sx |
| 5.5" | 18,979 ft | 2,050 sx |
Permit History (1)
Applications (1)
Records & Logs
2 completion filings 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.
Well Details
- Well Number
- 4H
- Max Depth
- 12,000 ft
- Drill Type
- Horizontal
- County
- GLASSCOCK
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2018-12-19
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