Permits
4
Max Depth
4,700 ft
First Permit
1984-10-01
Latest Activity
2022-06-03
Lifespan
38 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
1,515 psi
Injection Interval
3,130–4,050 ft
Injected (12mo)
2,106,846 bbl
Monthly injected volume (bbl, from H-10 filings through 2025-11-01)
Seismicity: no M2+ earthquakes recorded within 10 km in the last 24 months · TexNet catalog
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (14) Elevation 55 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| RECENT (WATER SANDS) | 1 ft | +54 ft |
| LARGARTA (Lagarto) | 1,400 ft | -1,345 ft |
| LARGARTO (Lagarto) | 1,500 ft | -1,445 ft |
| OAKVILLE | 2,750 ft | -2,695 ft |
| OAKVILLE | 2,800 ft | -2,745 ft |
| CATAHOULA | 3,300 ft | -3,245 ft |
| CATAHOULA (MIOCENE) (Catahoula) | 3,300 ft | -3,245 ft |
| CATAHOULA | 3,500 ft | -3,445 ft |
| ANAGUAC | 4,050 ft | -3,995 ft |
| ANAHUAC (MIOCENE) (Anahuac) | 4,100 ft | -4,045 ft |
| GRETA | 4,300 ft | -4,245 ft |
| FRIO-GRETA (OLIGOCENE) (Frio) | 4,365 ft | -4,310 ft |
| LOWER FRIO (OLIGOCENE) (Frio) | — | — |
| MIDDLE FRIO (SINTON) (Frio) | — | — |
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 ↗
Offset Well Tops (nearest 8 wells with tops)
What nearby completed wells reported.
Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).
Perforations (4)
| Interval | Type |
|---|---|
| 3,866–3,877 ft | Perforated |
| 3,902–3,930 ft | Perforated |
| 4,382–4,396 ft | Perforated |
| 4,491–4,495 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,533 ft | 845 sx |
| 5.5" | 4,661 ft | 905 sx |
Permit History (4)
WILLIAMS, MAUDE ETAL -A- · 4,665 ft
2022-06-03
WILLIAMS, MAUDE ET AL 'A' · 4,665 ft
2017-06-28
WILLIAMS, MAUDE ET AL 'A' · 4,665 ft
1996-12-17
Spud 1996-12-11
WILLIAMS, MAUDE ET AL "A" · 4,700 ft
1984-10-01
Spud 1984-11-10
Applications (5)
Records & Logs
5 completion filings on record · 1 with log images at RRC.
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.
Well Details
- Well Number
- D136
- Max Depth
- 4,700 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
- 3,428