42-321-31594
Final CompletionHILTPOLD
MATAGORDA County · District 3 · UNDERGROUND SERVICES MARKHAM LLC · MARKHAM
Permits
1
Max Depth
6,600 ft
First Permit
1989-08-09
Latest Activity
1989-08-09
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2005-04-07
Shut-In
—
Plugged
—
EWA / Permit operator mismatch
Scheduling: UNDERGROUND SERVICES MARKHAM LLC ≠ Permit: TEXAS BRINE CORPORATION
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
250,000 mcf/d
Max Pressure
—
Injection Interval
3,475–4,590 ft
Injected (12mo)
—
Operator History
originally filed by TEXAS BRINE CORPORATION — asset transferred
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (13) Elevation 32 ft (KB)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CAPROCK | 2,406 ft | -2,374 ft |
| CAPROCK - DISPOSAL (Caprock) | 2,406 ft | -2,374 ft |
| SALT DOME | 2,548 ft | -2,516 ft |
| TOP SALT | 2,548 ft | -2,516 ft |
| ANAHUAC | — | — |
| FRIO - DISPOSAL (Frio) | — | — |
| FRIO, LOWER (Frio) | — | — |
| GRANT - DISPOSAL | — | — |
| GRETTA - DISPOSAL | — | — |
| MIOCENE - DISPOSAL (Miocene (undifferentiated)) | — | — |
| NODOSARIA | — | — |
| TEX MISS | — | — |
| WILLIS - DISPOSAL | — | — |
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 |
|---|---|
| 3,418–4,823 ft | Open hole |
| 3,418–5,444 ft | Perforated |
| 3,418–6,568 ft | Open hole |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 30" | 809 ft | 1,910 sx |
| 24" | 2,387 ft | 3,686 sx |
| 20" | 2,805 ft | 576 sx |
| 13.375" | 3,418 ft | 3,965 sx |
Permit History (1)
Applications (1)
Records & Logs
5 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
- 4
- Max Depth
- 6,600 ft
- Drill Type
- Vertical
- County
- MATAGORDA
- District
- 3
- Operator
- UNDERGROUND SERVICES MARKHAM LLC
- Completed
- 2005-04-07
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