42-391-01650
Final CompletionOCONNOR THOMAS -E-
REFUGIO County · District 2 · T - C OIL COMPANY · TOM OCONNOR (5800)
Permits
1
Max Depth
6,027 ft
First Permit
1995-07-07
Latest Activity
1995-07-07
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: T - C OIL COMPANY ≠ Production: HILCORP ENERGY COMPANY (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: T - C OIL COMPANY ≠ Permit: QUINTANA PET. CORP.
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 62 ft (KB)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LARGARTO (Lagarto) | 1,500 ft | -1,438 ft |
| OAKVILLE | 2,750 ft | -2,688 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 3,300 ft | -3,238 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,100 ft | -4,038 ft |
| FRIO-GRETA (OLIGOCENE) (Frio) | 4,365 ft | -4,303 ft |
| MIDDLE FRIO (SINTON) (Frio) | 5,000 ft | -4,938 ft |
| LOWER FRIO (OLIGOCENE) (Frio) | 5,880 ft | -5,818 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 (4)
| Interval | Type |
|---|---|
| 5,500–5,504 ft | Perforated |
| 5,842–5,848 ft | Perforated |
| ?–5,443 ft | Perforated |
| ?–5,800 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,060 ft | 400 sx |
| 10.75" | 1,061 ft | 632 sx |
| 5.5" | 5,916 ft | 632 sx |
| 5.5" | 5,916 ft | 632 sx |
Permit History (1)
Applications (1)
Records & Logs
4 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
- C426
- Max Depth
- 6,027 ft
- Drill Type
- Vertical
- County
- REFUGIO
- District
- 2
- Operator
- T - C OIL COMPANY
Operator
- Name
- T - C OIL CO
- Location
- REFUGIO
- P-5 Status
- Inactive (filed 2011-11-07)
- Cum Oil (all leases)
- 15,292,994 bbl
- Cum Gas (all leases)
- 112,873,669 mcf
- Total Permits
- 1,009