Permits
12
Max Depth
5,980 ft
First Permit
1978-01-03
Latest Activity
2026-07-22
Lifespan
49 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
—
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
15,000 bbl/d
Max Pressure
2,200 psi
Injection Interval
4,450–4,850 ft
Injected (12mo)
—
Monthly injected volume (bbl, from H-10 filings through 2025-11-01)
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (17) Elevation 55 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LARGARTO (Lagarto) | 1,500 ft | -1,445 ft |
| LARGARTO (Lagarto) | 2,750 ft | -2,695 ft |
| OAKVILLE | 2,750 ft | -2,695 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 3,300 ft | -3,245 ft |
| OAKVILLE | 3,300 ft | -3,245 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,100 ft | -4,045 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 4,100 ft | -4,045 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,365 ft | -4,310 ft |
| FRI-GRETA (OLIGOCENE) | 4,365 ft | -4,310 ft |
| FRIO-GRETA (OLIGOCENE) (Frio) | 4,365 ft | -4,310 ft |
| FRIO-GRETA (OLIG) (Frio) | 4,785 ft | -4,730 ft |
| MIDDLE FRIO (SINTON) (Frio) | 5,000 ft | -4,945 ft |
| MIDDLE FRIO (SINTON) (Frio) | 5,400 ft | -5,345 ft |
| LOWER FRIO (OLIGOCENE) (Frio) | 5,880 ft | -5,825 ft |
| FRIO | 5,980 ft | -5,925 ft |
| LOWER FRIO (OLIG) (Frio) | 5,980 ft | -5,925 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 (9)
| Interval | Type |
|---|---|
| 4,120–4,132 ft | Perforated |
| 5,041–5,057 ft | Perforated |
| 5,223–5,233 ft | Perforated |
| 5,473–5,481 ft | Perforated |
| 5,486–5,490 ft | Perforated |
| 5,518–5,523 ft | Perforated |
| 5,683–5,689 ft | Perforated |
| 5,785–5,790 ft | Perforated |
| 5,800–5,808 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,235 ft | 350 sx |
| 7" | 5,952 ft | 750 sx |
Permit History (12)
O'CONNOR, THOMAS -C- · 5,980 ft
2026-07-22
THOMAS O'CONNOR "C" · 5,980 ft
2011-11-08
THOMAS O'CONNOR 'C' · 5,980 ft
2011-11-08
Spud 2012-02-24
THOMAS O'CONNOR 'C' · 5,980 ft
2011-11-08
O'CONNOR, THOMAS "C" · 5,980 ft
2007-03-15
Spud 2007-04-13
TOM O'CONNOR (5800 SD) FLD UNIT · 5,980 ft
2001-12-06
Spud 2002-05-10
O'CONNOR, THOMAS 'C' · 5,980 ft
1999-04-06
Spud 1999-02-11
O'CONNOR, THOMAS "C" · 5,980 ft
1991-11-19
Spud 1991-10-04
O'CONNOR, THOMAS "C" · 5,980 ft
1990-01-10
O'CONNOR, THOMAS "C" · 5,980 ft
1985-11-05
O'CONNOR, THOMAS "C" · 5,980 ft
1984-10-09
O'CONNOR, THOMAS "C" · 5,980 ft
1978-01-03
Applications (12)
Records & Logs
14 completion filings on record · 6 with log images at RRC.
+8 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
- 4G
- Max Depth
- 5,980 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