42-461-34722
PRODUCING HorizontalRAILWAY RANCH 21 A UNIT
UPTON County · District 7 · EXTEX OPERATING COMPANY · DAVIS (DEVONIAN)
Permits
2
Max Depth
12,700 ft
First Permit
2005-01-18
Latest Activity
2005-01-18
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2005-11-07
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: EXTEX OPERATING COMPANY ≠ Permit: EOG RESOURCES, INC.
Resolved via: scheduling → EXTEX OPERATING COMPANY
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
2005-11
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 (6) Elevation 2,846 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BURNETT SHALE | 10,750 ft | -7,904 ft |
| WOODFORD | 11,410 ft | -8,564 ft |
| DEVONIAN | 11,540 ft | -8,694 ft |
| UPPER DEVONIAN (Devonian) | 11,890 ft | -9,044 ft |
| LOWER DEVONIAN (Devonian) | 12,000 ft | -9,154 ft |
| ESTIMATED TOPS | — | — |
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 |
|---|---|
| 12,260–15,138 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 365 ft | 400 sx |
| 9.625" | 5,202 ft | 1,650 sx |
| 7" | 11,665 ft | 980 sx |
Permit History (2)
Applications (2)
Records & Logs
2 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 H
- Max Depth
- 12,700 ft
- Drill Type
- Horizontal
- County
- UPTON
- District
- 7
- Operator
- EXTEX OPERATING COMPANY
- Completed
- 2005-11-07
Operator
- Name
- EXTEX OPER CO
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-01-07)
- Cum Oil (all leases)
- 5,887,486 bbl
- Cum Gas (all leases)
- 10,031,045 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 117