42-391-00481
Final CompletionTOM OCONNOR (5800 SD) FLD. UNIT
REFUGIO County · District 2 · HILCORP ENERGY COMPANY · TOM OCONNOR (5800)
Permits
2
Max Depth
5,918 ft
First Permit
1999-04-01
Latest Activity
2000-03-03
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
—
EWA / Permit operator mismatch
Scheduling: HILCORP ENERGY 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
3,500 bbl/d
Max Pressure
2,896 psi
Injection Interval
5,792–5,830 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 (9) Elevation 54 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SURFACE SAND CLAY | 1,500 ft | -1,446 ft |
| LARGARTO (Lagarto) | 2,750 ft | -2,696 ft |
| OAKVILLE | 3,300 ft | -3,246 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 4,100 ft | -4,046 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,365 ft | -4,311 ft |
| FRIO-GRETA (OLIG) (Frio) | 4,785 ft | -4,731 ft |
| MIDDEL FRIO (SINTON) | 5,400 ft | -5,346 ft |
| MUDDLE FRIO (SINTON) | 5,400 ft | -5,346 ft |
| LOWER FRIO (OLIG) (Frio) | 5,918 ft | -5,864 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 (1)
| Interval | Type |
|---|---|
| 5,801–5,811 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,192 ft | 350 sx |
| 5.5" | 5,915 ft | 500 sx |
Permit History (2)
Applications (2)
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
- 51A
- Max Depth
- 5,918 ft
- Drill Type
- Vertical
- County
- REFUGIO
- District
- 2
- Operator
- HILCORP ENERGY COMPANY
Operator
- Name
- HILCORP ENGY CO
- Location
- HOUSTON
- P-5 Status
- X (filed 2026-03-27)
- Cum Oil (all leases)
- 75,699,281 bbl
- Cum Gas (all leases)
- 1,779,939,645 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
- Total Permits
- 3,436