42-391-01591
Final CompletionOCONNOR THOMAS -B-
REFUGIO County · District 2 · T - C OIL COMPANY · TOM OCONNOR (5800)
Permits
3
Max Depth
5,927 ft
First Permit
2008-02-11
Latest Activity
2011-05-20
Lifespan
3 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1986-09-09
Shut-In
—
Plugged
2021-07-06
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: HILCORP ENERGY COMPANY
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 52 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LARGARTO (Lagarto) | 1,500 ft | -1,448 ft |
| OAKVILLE | 2,750 ft | -2,698 ft |
| OAKVILLE | 2,900 ft | -2,848 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 3,300 ft | -3,248 ft |
| CATAHOULA | 3,600 ft | -3,548 ft |
| ANAHUAC | 4,100 ft | -4,048 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,100 ft | -4,048 ft |
| GRETA | 4,300 ft | -4,248 ft |
| FRIO-GRETA (OLIGOCENE) (Frio) | 4,365 ft | -4,313 ft |
| MIDDLE FRIO (SINTON) (Frio) | 5,000 ft | -4,948 ft |
| UPPER FRIO (Frio) | 5,000 ft | -4,948 ft |
| LOWER FRIO (Frio) | 5,800 ft | -5,748 ft |
| LOWER FRIO (OLIGOCENE) (Frio) | 5,880 ft | -5,828 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 |
|---|---|
| 4,171–4,178 ft | Perforated |
| 4,382–4,388 ft | Perforated |
| 5,822–5,826 ft | Perforated |
| 5,842–5,847 ft | Perforated |
Casing (6)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,118 ft | 528 sx |
| 10.75" | 1,132 ft | 528 sx |
| 10.75" | 1,132 ft | 528 sx |
| 5" | 5,921 ft | 528 sx |
| 5" | 5,921 ft | 528 sx |
| 5" | 5,922 ft | 528 sx |
Permit History (3)
Applications (3)
Records & Logs
7 completion filings on record · 2 with log images at RRC.
+1 more filings
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
- C211
- Max Depth
- 5,927 ft
- Drill Type
- Vertical
- County
- REFUGIO
- District
- 2
- Operator
- T - C OIL COMPANY
- Completed
- 1986-09-09
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