42-461-31709
Final CompletionNEAL -38-
UPTON County · District 7 · COX JOHN L. · BENEDUM (FUSSELMAN)
Permits
1
Max Depth
11,500 ft
First Permit
1981-01-09
Latest Activity
1981-01-09
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1981-04-15
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: COX JOHN L. ≠ Production: PIONEER NATURAL RES. USA, INC. (reported 2026-04)
Resolved via: production → PIONEER NATURAL RES. USA, INC.
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 (5) Elevation 2,695 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| REDBEDS | 400 ft | +2,295 ft |
| LOWER SPRABERRY (Spraberry) | 7,500 ft | -4,805 ft |
| DEAN | 8,200 ft | -5,505 ft |
| WOLFCAMP | 8,350 ft | -5,655 ft |
| FUSSELMAN | 11,160 ft | -8,465 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 |
|---|---|
| 11,163–11,230 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 526 ft | 500 sx |
| 8.625" | 4,772 ft | 1,000 sx |
| 2.875" | 10,051 ft | — |
| 5.5" | 11,300 ft | 1,250 sx |
Permit History (1)
Applications (1)
Records & Logs
3 completion filings on record.
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
- 11,500 ft
- Drill Type
- Vertical
- County
- UPTON
- District
- 7
- Operator
- COX JOHN L.
- Completed
- 1981-04-15
Operator
- Name
- COX, JOHN L
- Location
- MIDLAND
- P-5 Status
- Inactive (filed 2003-03-21)
- Cum Oil (all leases)
- 15,795,687 bbl
- Cum Gas (all leases)
- 2,577,420 mcf
- Total Permits
- 1,123