42-391-01609
Final CompletionOCONNOR THOMAS -B-
REFUGIO County · District 2 · T - C OIL COMPANY · TOM OCONNOR (5800)
Permits
3
Max Depth
5,931 ft
First Permit
1977-08-02
Latest Activity
1986-05-01
Lifespan
9 yrs
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
Injection / Disposal
Permitted Volume
6,000 bbl/d
Max Pressure
2,250 psi
Injection Interval
5,852–5,870 ft
Injected (12mo)
—
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (7) Elevation 48 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LARGARTO (Lagarto) | 1,500 ft | -1,452 ft |
| OAKVILLE | 2,750 ft | -2,702 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 3,300 ft | -3,252 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,100 ft | -4,052 ft |
| FRIO-GRETA (OLIGOCENE) (Frio) | 4,365 ft | -4,317 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 (2)
| Interval | Type |
|---|---|
| 5,438–5,445 ft | Perforated |
| 5,852–5,856 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,132 ft | 478 sx |
| 10.75" | 1,132 ft | 528 sx |
| 5.5" | 5,909 ft | 528 sx |
| 5" | 5,909 ft | 528 sx |
Permit History (3)
Applications (3)
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
- C229
- Max Depth
- 5,931 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