42-391-01732
Final CompletionNORDAN L. A.-OCONNOR THOMAS EST.
REFUGIO County · District 2 · T-C OIL COMPANY LLC · TOM OCONNOR (5900 SAND)
Permits
1
Max Depth
4,500 ft
First Permit
1994-06-22
Latest Activity
1994-06-22
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
2016-04-15
EWA / Production operator mismatch
Scheduling: T-C OIL COMPANY LLC ≠ Production: HILCORP ENERGY COMPANY (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: T-C OIL COMPANY LLC ≠ Permit: MELLON OIL UNIT
Resolved via: production → HILCORP ENERGY 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 (11) Elevation 48 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LARGARTO (Lagarto) | 1,500 ft | -1,452 ft |
| LAGARTO | 1,820 ft | -1,772 ft |
| OAKVILLE | 2,750 ft | -2,702 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 3,300 ft | -3,252 ft |
| CATAHOULA | 3,640 ft | -3,592 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,100 ft | -4,052 ft |
| FRIO-GRETA (OLIGOCENE) (Frio) | 4,365 ft | -4,317 ft |
| GRETA | 4,380 ft | -4,332 ft |
| FRIO | 4,800 ft | -4,752 ft |
| MIDDLE FRIO (SINTON) (Frio) | 5,000 ft | -4,952 ft |
| LOWER FRIO (OLIGOCENE) (Frio) | 5,880 ft | -5,832 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 |
|---|---|
| 4,360–4,372 ft | Perforated |
| 4,390–4,394 ft | Perforated |
| ?–5,800 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,189 ft | 528 sx |
| 10.75" | 1,189 ft | 528 sx |
| 7" | 5,911 ft | 528 sx |
| 7" | 5,911 ft | 528 sx |
Permit History (1)
Applications (1)
Records & Logs
5 completion filings on record · 1 with log images at RRC.
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
- 25
- Max Depth
- 4,500 ft
- Drill Type
- Vertical
- County
- REFUGIO
- District
- 2
- Operator
- T-C OIL COMPANY LLC
Operator
- Name
- T-C OIL CO, LLC
- Location
- REFUGIO
- P-5 Status
- Active (filed 2025-12-03)
- Cum Oil (all leases)
- 13,683,333 bbl
- Cum Gas (all leases)
- 22,912,895 mcf
- Activities
- CSGD/P, G/PUR, OPRS/G, OPRS/O
- Total Permits
- 283