42-391-01714
Final CompletionNORDAN L. A.-OCONNOR THOMAS EST.
REFUGIO County · District 2 · T-C OIL COMPANY LLC · TOM OCONNOR (5900 SAND)
Permits
2
Max Depth
5,775 ft
First Permit
2006-07-31
Latest Activity
2006-07-31
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1979-04-27
Shut-In
—
Plugged
2016-03-28
EWA / Production operator mismatch
Scheduling: T-C OIL COMPANY LLC ≠ Production: HILCORP ENERGY COMPANY (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: T-C OIL COMPANY LLC ≠ Permit: T - C OIL 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
Injection / Disposal
Permitted Volume
5,000 bbl/d
Max Pressure
2,250 psi
Injection Interval
5,777–5,792 ft
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 (13) Elevation 59 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LAGARTO | 1 ft | +58 ft |
| LARGARTO (Lagarto) | 1,500 ft | -1,441 ft |
| MIOCENE (Miocene (undifferentiated)) | 2,272 ft | -2,213 ft |
| OAKVILLE | 2,750 ft | -2,691 ft |
| CATAHOULA(MIOCENE) (Catahoula) | 3,300 ft | -3,241 ft |
| CATAHOULA | 3,625 ft | -3,566 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,100 ft | -4,041 ft |
| FRIO-GRETA (OLIGOCENE) (Frio) | 4,365 ft | -4,306 ft |
| GRETA | 4,370 ft | -4,311 ft |
| FRIO | 4,800 ft | -4,741 ft |
| MIDDLE FRIO (SINTON) (Frio) | 5,000 ft | -4,941 ft |
| LOWER FRIO (OLIGOCENE) (Frio) | 5,880 ft | -5,821 ft |
| NO CHANGE | — | — |
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 |
|---|---|
| 4,380–4,386 ft | Perforated |
| 5,777–5,792 ft | Perforated |
| 5,790–5,896 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,136 ft | 606 sx |
| 10.75" | 1,137 ft | 528 sx |
| 1.5" | 5,733 ft | — |
| 1.5" | 5,872 ft | — |
| 5" | 5,905 ft | 528 sx |
Permit History (2)
Applications (2)
Records & Logs
7 completion filings on record · 1 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
- 5,775 ft
- Drill Type
- Vertical
- County
- REFUGIO
- District
- 2
- Operator
- T-C OIL COMPANY LLC
- Completed
- 1979-04-27
Operator
- Name
- T-C OIL CO, LLC
- Location
- REFUGIO
- P-5 Status
- Active (filed 2025-12-03)
- Cum Oil (all leases)
- 13,683,333 bbl
- Cum Gas (all leases)
- 22,912,895 mcf
- Activities
- CSGD/P, G/PUR, OPRS/G, OPRS/O
- Total Permits
- 283