42-391-01738
Final CompletionNORDAN L. A.-OCONNOR THOMAS EST.
REFUGIO County · District 2 · T-C OIL COMPANY LLC · TOM OCONNOR (5900 SAND)
Permits
2
Max Depth
5,915 ft
First Permit
1993-04-12
Latest Activity
1994-09-06
Lifespan
1 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
2006-12-07
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: COPANO GAS 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 (7) Elevation 49 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LARGARTO (Lagarto) | 1,500 ft | -1,451 ft |
| OAKVILLE | 2,750 ft | -2,701 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 3,300 ft | -3,251 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,100 ft | -4,051 ft |
| FRIO-GRETA (OLIGOCENE) (Frio) | 4,365 ft | -4,316 ft |
| MIDDLE FRIO (SINTON) (Frio) | 5,000 ft | -4,951 ft |
| LOWER FRIO (OLIGOCENE) (Frio) | 5,880 ft | -5,831 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 (2)
| Interval | Type |
|---|---|
| 5,252–5,256 ft | Perforated |
| 5,764–5,769 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,135 ft | 428 sx |
| 10.75" | 1,135 ft | 528 sx |
| 5" | 5,905 ft | 528 sx |
| 5" | 5,905 ft | 528 sx |
Permit History (2)
Applications (2)
Records & Logs
5 completion filings on record · 3 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
- 20
- Max Depth
- 5,915 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