42-391-01664
Final CompletionOCONNOR THOMAS -E-
REFUGIO County · District 2 · T - C OIL COMPANY · TOM OCONNOR (5800)
Permits
1
Max Depth
5,862 ft
First Permit
1979-11-12
Latest Activity
1979-11-12
Lifespan
< 1 yr
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: COPANO 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 (4) Elevation 56 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CATAHOULA | 3,740 ft | -3,684 ft |
| FRIO | 4,488 ft | -4,432 ft |
| JACKSON/YEGUA (Jackson) | — | — |
| 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 (4)
| Interval | Type |
|---|---|
| 5,466–? ft | Perforated |
| 5,806–5,810 ft | Perforated |
| 5,817–5,823 ft | Perforated |
| ?–5,800 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,062 ft | 500 sx |
| 10.75" | 1,063 ft | 632 sx |
| 10.75" | 1,067 ft | — |
| 2.375" | 5,730 ft | — |
| 5.5" | 5,863 ft | 632 sx |
Permit History (1)
Applications (1)
Records & Logs
6 completion filings on record.
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
- E40U
- Max Depth
- 5,862 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