42-227-40798
PRODUCING HorizontalCLARICE STARLING SUNDOWN B
HOWARD County · District 8 · SM ENERGY COMPANY · SPRABERRY (TREND AREA)
Permits
1
Max Depth
9,000 ft
First Permit
2020-09-25
Latest Activity
2020-09-25
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2021-07-12
Shut-In
—
Plugged
—
P-5 Org Status: Active
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
2020-10
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 2,642 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SANTA ROSA | 829 ft | +1,813 ft |
| RUSTLER | 1,342 ft | +1,300 ft |
| YATES | 1,866 ft | +776 ft |
| SEVEN RIVERS | 1,958 ft | +684 ft |
| SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres) | 3,330 ft | -688 ft |
| GLORIETA | 3,774 ft | -1,132 ft |
| CLEARFORK - SEVERE WATER FLOWS (Clear Fork) | 4,066 ft | -1,424 ft |
| SPRABERRY | 5,719 ft | -3,077 ft |
| DEAN | — | — |
| LEONARD | — | — |
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 |
|---|---|
| 7,306–22,482 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 451 ft | 461 sx |
| 9.625" | 6,193 ft | 795 sx |
| 5.5" | 22,578 ft | 3,130 sx |
Permit History (1)
Applications (1)
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
- 4521LS
- Max Depth
- 9,000 ft
- Drill Type
- Horizontal
- County
- HOWARD
- District
- 8
- Operator
- SM ENERGY COMPANY
- Completed
- 2021-07-12
Operator
- Name
- SM ENGY CO
- Location
- MIDLAND
- P-5 Status
- Active (filed 2025-09-03)
- Cum Oil (all leases)
- 259,095,814 bbl
- Cum Gas (all leases)
- 2,018,206,272 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 2,446