42-211-31600
Final CompletionISAACS -210-
HEMPHILL County · District 10 · HIGHMARK ENERGY OPERATING LLC · CANADIAN SE (DOUGLAS)
Permits
1
Max Depth
8,100 ft
First Permit
1983-07-07
Latest Activity
1983-07-07
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1983-09-03
Shut-In
—
Plugged
2025-10-08
EWA / Production operator mismatch
Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Production: CHEVRON U. S. A. INC. (reported 2008-03)
EWA / Permit operator mismatch
Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Permit: GULF OIL CORP.
Resolved via: scheduling → 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
1993-01
Last Production
2025-10
Operator History
originally filed by GULF OIL CORP. — asset transferred
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (4) Elevation 2,575 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BROWN DOLOMITE | 3,930 ft | -1,355 ft |
| WOLFCAMP LIME (Wolfcamp) | 4,047 ft | -1,472 ft |
| DOUGLAS | 7,006 ft | -4,431 ft |
| LOWER DOUGLAS (Douglas) | 7,300 ft | -4,725 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 (1)
| Interval | Type |
|---|---|
| 7,110–7,134 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,537 ft | 600 sx |
| 5.5" | 7,451 ft | 600 sx |
Permit History (1)
Applications (1)
Records & Logs
2 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.
No GPS coordinates yet
Well Details
- Well Number
- 5210
- Max Depth
- 8,100 ft
- Drill Type
- Vertical
- County
- HEMPHILL
- District
- 10
- Operator
- HIGHMARK ENERGY OPERATING LLC
- Completed
- 1983-09-03
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