42-479-34371
PRODUCINGHIRSCH ESTATE 1765
WEBB County · District 4 · HILCORP ENERGY COMPANY · BIG COWBOY (LOBO)
Permits
1
Max Depth
9,800 ft
First Permit
1986-04-24
Latest Activity
1986-04-24
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1998-03-24
Shut-In
—
Plugged
—
P-5 Org Status: X
EWA / Permit operator mismatch
Scheduling: HILCORP ENERGY COMPANY ≠ Permit: HNG OIL 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 (6) Elevation 545 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| QUEEN CITY | 2,440 ft | -1,895 ft |
| WILCOX | 4,496 ft | -3,951 ft |
| BASE OF LOWER WILCOX (Wilcox) | 7,250 ft | -6,705 ft |
| WALKER | 7,656 ft | -7,111 ft |
| TD WILCOX | 8,825 ft | -8,280 ft |
| WILLS POINT | 8,825 ft | -8,280 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 (3)
| Interval | Type |
|---|---|
| 7,656–7,690 ft | Perforated |
| 7,720–7,728 ft | Perforated |
| 7,877–7,924 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 506 ft | 225 sx |
| 7" | 7,055 ft | 615 sx |
| 4.5" | 8,825 ft | 300 sx |
Permit History (1)
Applications (1)
Records & Logs
3 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.
No GPS coordinates yet
Well Details
- Well Number
- 1
- Max Depth
- 9,800 ft
- Drill Type
- Vertical
- County
- WEBB
- District
- 4
- Operator
- HILCORP ENERGY COMPANY
- Completed
- 1998-03-24
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
- 3,430