42-003-37877
Final CompletionSHAFTER LAKE CLEARFORK UNIT
ANDREWS County · District 8 · HIGHMARK ENERGY OPERATING LLC · SHAFTER LAKE (CLEAR FORK)
Permits
1
Max Depth
7,200 ft
First Permit
1996-06-03
Latest Activity
1996-06-03
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1996-10-14
Shut-In
—
Plugged
—
EWA / Permit operator mismatch
Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Permit: HENRY PETROLEUM CORP.
Resolved via: production → HIGHMARK ENERGY OPERATING, LLC
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
1995-02
Last Production
2026-07
Injection / Disposal
ANDREWS County disposal market →Permitted Volume
750 bbl/d
Max Pressure
2,850 psi
Injection Interval
5,700–7,000 ft
Injected (12mo)
14 bbl
Monthly injected volume (bbl, from H-10 filings through 2026-03-01)
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 (4) Elevation 3,241 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| YATES | 2,912 ft | +329 ft |
| SAN ANDRES | 4,504 ft | -1,263 ft |
| CLEARFORK (Clear Fork) | 5,805 ft | -2,564 ft |
| TUBB | 6,780 ft | -3,539 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 (4)
| Interval | Type |
|---|---|
| 6,674–6,711 ft | Perforated |
| 6,674–6,858 ft | Perforated |
| 6,808–6,858 ft | Perforated |
| 6,884–6,944 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 1,622 ft | 535 sx |
| 4.5" | 7,050 ft | 1,800 sx |
Permit History (1)
Applications (1)
Records & Logs
6 completion filings on record.
Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 523
- Max Depth
- 7,200 ft
- Drill Type
- Vertical
- County
- ANDREWS
- District
- 8
- Operator
- HIGHMARK ENERGY OPERATING LLC
- Completed
- 1996-10-14
Operator
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-03-09)
- Cum Oil (all leases)
- 4,551,977 bbl
- Cum Gas (all leases)
- 30,465,409 mcf
- Activities
- CSGD/G, G/PUR, GTHS/G, OPRS/G, OPRS/O
- Total Permits
- 15