42-501-33620
Final CompletionMAHONEY H. O.
YOAKUM County · District 8 · HILCORP ENERGY COMPANY · WASSON 72
Permits
1
Max Depth
8,500 ft
First Permit
1990-10-19
Latest Activity
1990-10-19
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1999-08-19
Shut-In
—
Plugged
2025-01-03
EWA / Permit operator mismatch
Scheduling: HILCORP ENERGY COMPANY ≠ Permit: MOBIL PRODUCING TX. & N.M. INC.
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 (5) Elevation 3,546 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| RUSTLER | 2,350 ft | +1,196 ft |
| YATES | 3,145 ft | +401 ft |
| SAN ANDRES | 4,599 ft | -1,053 ft |
| UPPER CLEARFORK (Clear Fork) | 6,750 ft | -3,204 ft |
| LOWER CLEARFORK (Clear Fork) | 7,656 ft | -4,110 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 |
|---|---|
| 7,718–7,747 ft | Perforated |
| 7,734–8,107 ft | Perforated |
| 7,984–8,015 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 500 ft | 500 sx |
| 8.625" | 5,400 ft | 2,150 sx |
| 8.625" | 5,400 ft | 2,150 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
- 77
- Max Depth
- 8,500 ft
- Drill Type
- Vertical
- County
- YOAKUM
- District
- 8
- Operator
- HILCORP ENERGY COMPANY
- Completed
- 1999-08-19
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
- 3,439