42-391-01619
Final CompletionOCONNOR THOMAS -B-
REFUGIO County · District 2 · T - C OIL COMPANY · TOM OCONNOR (5800)
Permits
1
Max Depth
5,748 ft
First Permit
2004-11-29
Latest Activity
2004-11-29
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
2018-04-24
EWA / Production operator mismatch
Scheduling: T - C OIL COMPANY ≠ Production: HILCORP ENERGY COMPANY (reported 2026-04)
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 (13) Elevation 45 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LAGARTO | 1 ft | +44 ft |
| MIOCENE (Miocene (undifferentiated)) | 2,042 ft | -1,997 ft |
| LARGARTO (Lagarto) | 2,750 ft | -2,705 ft |
| OAKVILLE | 3,300 ft | -3,255 ft |
| CATAHOULA | 3,685 ft | -3,640 ft |
| CATAHOULA | 4,100 ft | -4,055 ft |
| ANAHUAC | 4,365 ft | -4,320 ft |
| GRETA | 4,400 ft | -4,355 ft |
| MIDDLE FRIO (Frio) | 4,785 ft | -4,740 ft |
| FRIO | 4,830 ft | -4,785 ft |
| LOWER FRIO (Frio) | 5,400 ft | -5,355 ft |
| LAGARTO | — | — |
| LOWER FRIO TD (Frio) | — | — |
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 |
|---|---|
| 5,012–5,018 ft | Perforated |
| 5,020–5,024 ft | Perforated |
| ?–5,800 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,128 ft | 500 sx |
| 10.75" | 1,128 ft | 500 sx |
| 10.75" | 1,130 ft | 528 sx |
| 5" | 5,853 ft | 500 sx |
| 5" | 5,853 ft | 500 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
- 27
- Max Depth
- 5,748 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