42-003-37606
INJECTIONSHAFTER LAKE CLEARFORK UNIT
ANDREWS County · District 8 · HIGHMARK ENERGY OPERATING LLC · SHAFTER LAKE (CLEAR FORK)
Permits
1
Max Depth
7,200 ft
First Permit
1995-02-15
Latest Activity
1995-02-15
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1995-07-14
Shut-In
—
Plugged
—
P-5 Org Status: Active
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)
—
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 (7) Elevation 3,199 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| YATES | 2,845 ft | +354 ft |
| SAN ANDRES | 4,450 ft | -1,251 ft |
| UPPER CLEARFORK (Clear Fork) | 5,773 ft | -2,574 ft |
| UPR. CLFK | 5,773 ft | -2,574 ft |
| LOWER CLEARFORK (Clear Fork) | 6,613 ft | -3,414 ft |
| LWR. CLFK | 6,613 ft | -3,414 ft |
| TUBB | 6,777 ft | -3,578 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 (6)
| Interval | Type |
|---|---|
| 6,670–6,676 ft | Perforated |
| 6,670–6,909 ft | Perforated |
| 6,683–6,690 ft | Perforated |
| 6,805–6,825 ft | Perforated |
| 6,830–6,840 ft | Perforated |
| 6,877–6,909 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 1,810 ft | 950 sx |
| 4.5" | 7,036 ft | 1,900 sx |
Permit History (1)
Applications (1)
Records & Logs
3 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
- 526
- Max Depth
- 7,200 ft
- Drill Type
- Vertical
- County
- ANDREWS
- District
- 8
- Operator
- HIGHMARK ENERGY OPERATING LLC
- Completed
- 1995-07-14
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