42-321-32051
Final CompletionHILTPOLD
MATAGORDA County · District 3 · UNDERGROUND SERVICES MARKHAM LLC · MARKHAM
Permits
2
Max Depth
6,850 ft
First Permit
2005-02-25
Latest Activity
2005-02-25
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2007-05-02
Shut-In
—
Plugged
—
EWA / Permit operator mismatch
Scheduling: UNDERGROUND SERVICES MARKHAM LLC ≠ Permit: UNDERGROUND SERVICES MARKHAM, LP
Resolved via: scheduling → UNDERGROUND SERVICES MARKHAM 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
2026-07
Injection / Disposal
Permitted Volume
40,000 bbl/d
Max Pressure
2,160 psi
Injection Interval
3,500–6,600 ft
Injected (12mo)
—
Operator History
originally filed by UNDERGROUND SERVICES MARKHAM, LP — 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 33 ft (KB)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| TOP CAPROCK (Caprock) | 2,800 ft | -2,767 ft |
| TOP OF CAPROCK (Caprock) | 2,800 ft | -2,767 ft |
| TOP OF SALT | 2,914 ft | -2,881 ft |
| TOP SALT | 2,914 ft | -2,881 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 |
|---|---|
| 3,500–6,600 ft | Perforated |
Casing (9)
| Size | Set Depth | Cement |
|---|---|---|
| 42" | 170 ft | — |
| 36" | 920 ft | 5,195 sx |
| 36" | 952 ft | 5,195 sx |
| 30" | 2,524 ft | 4,880 sx |
| 30" | 2,556 ft | 4,880 sx |
| 20" | 3,078 ft | 4,715 sx |
| 20" | 3,110 ft | 4,715 sx |
| 16" | 3,384 ft | 2,100 sx |
| 16" | 3,416 ft | 2,100 sx |
Permit History (2)
Applications (2)
Records & Logs
6 completion filings on record · 4 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
- 8
- Max Depth
- 6,850 ft
- Drill Type
- Vertical
- County
- MATAGORDA
- District
- 3
- Operator
- UNDERGROUND SERVICES MARKHAM LLC
- Completed
- 2007-05-02
Operator
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-03-04)
- Cum Oil (all leases)
- — bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/O
- Total Permits
- 8