42-389-31481
PRODUCINGCALDWELL ESTATE 10
REEVES County · District 8 · EXTEX OPERATING COMPANY · SAN MARTINE SW. (WOLFCAMP)
Permits
1
Max Depth
12,100 ft
First Permit
1984-02-10
Latest Activity
1984-02-10
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1984-06-15
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: EXTEX OPERATING COMPANY ≠ Permit: CONOCO INC.
Resolved via: production → 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
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 3,217 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LAMAR | 3,920 ft | -703 ft |
| CHERRY CANYON | 4,810 ft | -1,593 ft |
| BRUSHY CANYON | 5,818 ft | -2,601 ft |
| BONE SPRINGS (Bone Spring) | 6,972 ft | -3,755 ft |
| WOLFCAMP SHALE (Wolfcamp) | 9,154 ft | -5,937 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 (3)
| Interval | Type |
|---|---|
| 10,902–11,073 ft | Perforated |
| 10,908–11,073 ft | Perforated |
| 11,172–11,398 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 353 ft | 400 sx |
| 9.625" | 3,995 ft | 2,555 sx |
| 5.5" | 12,098 ft | 1,050 sx |
Permit History (1)
Applications (1)
Records & Logs
4 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
- 12,100 ft
- Drill Type
- Vertical
- County
- REEVES
- District
- 8
- Operator
- EXTEX OPERATING COMPANY
- Completed
- 1984-06-15
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