42-391-01621
Final CompletionOCONNOR THOMAS -B-
REFUGIO County · District 2 · T - C OIL COMPANY · TOM OCONNOR (5800)
Permits
3
Max Depth
5,800 ft
First Permit
1997-05-30
Latest Activity
2005-01-14
Lifespan
8 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
2011-06-23
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
Injection / Disposal
Permitted Volume
6,000 bbl/d
Max Pressure
2,250 psi
Injection Interval
—
Injected (12mo)
—
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 (11) Elevation 45 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LAGARTO | 1 ft | +44 ft |
| LARGARTO (Lagarto) | 1,500 ft | -1,455 ft |
| MIOCENE (Miocene (undifferentiated)) | 2,040 ft | -1,995 ft |
| OAKVILLE | 2,750 ft | -2,705 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 3,300 ft | -3,255 ft |
| CATAHOULA | 3,645 ft | -3,600 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,100 ft | -4,055 ft |
| FRIO-GRETA (OLIGOCENE) (Frio) | 4,365 ft | -4,320 ft |
| GRETA | 4,388 ft | -4,343 ft |
| MIDDLE FRIO (SINTON) (Frio) | 5,000 ft | -4,955 ft |
| LOWER FRIO (OLIGOCENE) (Frio) | 5,849 ft | -5,804 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 |
|---|---|
| 5,018–5,028 ft | Perforated |
| 5,527–5,529 ft | Perforated |
| 5,827–5,842 ft | Perforated |
| ?–5,800 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,118 ft | 500 sx |
| 5" | 5,825 ft | 500 sx |
| 5" | 5,825 ft | 500 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
- 28
- Max Depth
- 5,800 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