42-329-33974
Final CompletionPRESTON SPRABERRY UNIT
MIDLAND County · District 8 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA)
Permits
1
Max Depth
8,800 ft
First Permit
1998-01-07
Latest Activity
1998-01-07
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2014-09-16
Shut-In
—
Plugged
2022-12-07
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 (8) Elevation 2,722 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE DEAN (Dean) | 5,601 ft | -2,879 ft |
| TOP OF UPPER SPRABERRY (Spraberry) | 7,023 ft | -4,301 ft |
| TOP UPPER SPRABERRY (Spraberry) | 7,023 ft | -4,301 ft |
| TOP LOWER SPRABERRY (Spraberry) | 7,734 ft | -5,012 ft |
| TOP OF LOWER SPRABERRY (Spraberry) | 7,734 ft | -5,012 ft |
| TOP DEAN (Dean) | 8,402 ft | -5,680 ft |
| TOP OF DEAN (Dean) | 8,402 ft | -5,680 ft |
| BASE DEAN (Dean) | 8,601 ft | -5,879 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 (2)
| Interval | Type |
|---|---|
| 7,751–7,968 ft | Perforated |
| 8,411–8,595 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 12.75" | 429 ft | 330 sx |
| 4.5" | 8,780 ft | 1,385 sx |
Permit History (1)
Applications (1)
Records & Logs
3 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.
No GPS coordinates yet
Well Details
- Well Number
- 4166A
- Max Depth
- 8,800 ft
- Drill Type
- Vertical
- County
- MIDLAND
- District
- 8
- Operator
- PIONEER NATURAL RES. USA INC.
- Completed
- 2014-09-16
Operator
- Location
- Y SPRING
- P-5 Status
- Active (filed 2025-08-01)
- Cum Oil (all leases)
- 1,771,882,421 bbl
- Cum Gas (all leases)
- 1,763,727,021 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
- Total Permits
- 15,425