42-391-30336
Final CompletionWILLIAMS MAUDE ETAL -A-
REFUGIO County · District 2 · HILCORP ENERGY COMPANY · LAKE PASTURE (H-440 SAND)
Permits
2
Max Depth
4,650 ft
First Permit
2007-10-18
Latest Activity
2023-06-08
Lifespan
16 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1974-12-09
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
10,000 bbl/d
Max Pressure
1,482 psi
Injection Interval
2,964–4,030 ft
Injected (12mo)
—
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 (3) Elevation 52 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| MIOCENE (Miocene (undifferentiated)) | 2,252 ft | -2,200 ft |
| CATAHOULA | 3,609 ft | -3,557 ft |
| GRETA | 4,362 ft | -4,310 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 ↗
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 (3)
| Interval | Type |
|---|---|
| 3,548–3,555 ft | Perforated |
| 4,435–4,452 ft | Perforated |
| 4,508–4,512 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,534 ft | 550 sx |
| 9.625" | 1,535 ft | 550 sx |
| 5.5" | 4,638 ft | 1,035 sx |
| 5.5" | 4,642 ft | 1,035 sx |
Permit History (2)
Applications (2)
Records & Logs
4 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.
Well Details
- Well Number
- D 81
- Max Depth
- 4,650 ft
- Drill Type
- Vertical
- County
- REFUGIO
- District
- 2
- Operator
- HILCORP ENERGY COMPANY
- Completed
- 1974-12-09
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