42-461-00843
Final CompletionWELCH "12"
UPTON County · District 7 · WOLFSON I. J. & GUEST WELDON S. · SPRABERRY (TREND AREA)
Permits
1
Max Depth
10,500 ft
First Permit
2003-09-24
Latest Activity
2003-09-24
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: WOLFSON I. J. & GUEST WELDON S. ≠ Production: DIAMONDBACK E&P LLC (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: WOLFSON I. J. & GUEST WELDON S. ≠ Permit: ENDEAVOR ENERGY RESOURCES L.P.
Resolved via: production → DIAMONDBACK E&P 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
2004-01
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 (4) Elevation 2,643 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| UPPER SPRABERRY (Spraberry) | 6,780 ft | -4,137 ft |
| LOWER SPRABERRY (Spraberry) | 7,365 ft | -4,722 ft |
| DEAN | 8,155 ft | -5,512 ft |
| BASE WOLFCAMP (Wolfcamp) | 9,075 ft | -6,432 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 (1)
| Interval | Type |
|---|---|
| 6,778–9,109 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 347 ft | — |
| 7" | 3,995 ft | 200 sx |
| 4.5" | 9,200 ft | 550 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 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
- 1
- Max Depth
- 10,500 ft
- Drill Type
- Vertical
- County
- UPTON
- District
- 7
- Operator
- WOLFSON I. J. & GUEST WELDON S.
Operator
- Location
- WICHITA FAL, LS
- P-5 Status
- Inactive