Permits
5
Max Depth
16,528 ft
First Permit
1988-12-06
Latest Activity
2012-05-10
Lifespan
23 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
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
1993-01
Last Production
2014-02
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 (7) Elevation 2,793 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| DELAWARE MOUNTAIN GROUP (Delaware) | 4,910 ft | -2,117 ft |
| DELAWARE MTN GROUP (Delaware) | 4,910 ft | -2,117 ft |
| WOLFCAMP | 10,983 ft | -8,190 ft |
| MISSISSIPPIAN | 14,370 ft | -11,577 ft |
| MISSISSIPPIAN LIME (Mississippian) | 14,808 ft | -12,015 ft |
| DEVONIAN | 15,814 ft | -13,021 ft |
| FUSSELMAN | 16,180 ft | -13,387 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 (4)
| Interval | Type |
|---|---|
| 7,782–7,820 ft | Perforated |
| 8,122–8,136 ft | Perforated |
| 11,892–12,049 ft | Perforated |
| 16,272–16,497 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 20" | 30 ft | 200 sx |
| 10" | 30 ft | 200 sx |
| 2.875" | 1,478 ft | — |
| 13.375" | 2,794 ft | 2,300 sx |
| 9.625" | 11,459 ft | 2,000 sx |
Permit History (5)
UNIVERSITY BLK 21 · 9,000 ft
2012-05-10
UNIVERSITY BLK 21 · 9,000 ft
2012-05-10
UNIVERSITY BLK 21 GU · 16,528 ft
2003-08-04
Spud 2003-09-23
UNIV. BLK. 21 GU · 8,580 ft
1994-09-26
Spud 1994-01-13
UNIV. BLK. 21 GU · 13,500 ft
1988-12-06
Applications (5)
Records & Logs
8 completion filings on record · 2 with log images at RRC.
+2 more filings
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
- 221
- Max Depth
- 16,528 ft
- Drill Type
- Vertical
- County
- WINKLER
- District
- 8
- Operator
- SANDRIDGE EXPL. AND PROD., LLC
Operator
- Location
- OKLAHOMA CI, TY
- P-5 Status
- Active (filed 2025-09-10)
- Cum Oil (all leases)
- 34,273,053 bbl
- Cum Gas (all leases)
- 570,818,154 mcf
- Activities
- OPRS/O
- Total Permits
- 3,454