42-055-32037
UCOSEY-DORN -A-
CALDWELL County · District 1 · MILLENNIUM EXPLORATION CO. LLC · LULING-BRANYON
Permits
1
Max Depth
2,150 ft
First Permit
1981-06-03
Latest Activity
1981-06-03
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
2022-02-22
EWA / Permit operator mismatch
Scheduling: MILLENNIUM EXPLORATION CO. LLC ≠ Permit: MARGO DRILLING COMPANY
Resolved via: scheduling → MILLENNIUM EXPLORATION CO. 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
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 (6) Elevation 445 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| AUSTIN (Austin Chalk) | 1,782 ft | -1,337 ft |
| EAGLEFORD (Eagle Ford) | 1,956 ft | -1,511 ft |
| BUDA | 1,982 ft | -1,537 ft |
| DEL RIO | 2,050 ft | -1,605 ft |
| GEORGETOWN | 2,098 ft | -1,653 ft |
| EDWARDS | 2,145 ft | -1,700 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 ↗
Casing (1)
| Size | Set Depth | Cement |
|---|---|---|
| 4.5" | 2,088 ft | 389 sx |
Permit History (1)
Applications (1)
Records & Logs
2 completion filings on record.
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
- 18
- Max Depth
- 2,150 ft
- Drill Type
- Vertical
- County
- CALDWELL
- District
- 1
- Operator
- MILLENNIUM EXPLORATION CO. LLC
Operator
- Location
- SAN ANTONIO
- P-5 Status
- Active (filed 2025-12-04)
- Cum Oil (all leases)
- 352,075 bbl
- Cum Gas (all leases)
- 783,959 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 41