42-321-31767
Final CompletionTRULL
MATAGORDA County · District 3 · UNDERGROUND SERVICES MARKHAM LLC · MARKHAM
Permits
1
Max Depth
6,500 ft
First Permit
1998-08-21
Latest Activity
1998-08-21
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1999-01-16
Shut-In
—
Plugged
—
EWA / Permit operator mismatch
Scheduling: UNDERGROUND SERVICES MARKHAM LLC ≠ Permit: TEXAS BRINE COMPANY,L.L.C.
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
45,000 bbl/d
Max Pressure
1,980 psi
Injection Interval
2,475–6,300 ft
Injected (12mo)
—
Permitted Volume
—
Max Pressure
—
Injection Interval
—
Injected (12mo)
—
Operator History
originally filed by TEXAS BRINE COMPANY,L.L.C. — 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) | 1,895 ft | -1,862 ft |
| TOP CAPROCK (Caprock) | 1,900 ft | -1,867 ft |
| TOP SALT | 2,000 ft | -1,967 ft |
| TOP SALT | 2,026 ft | -1,993 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 (2)
| Interval | Type |
|---|---|
| 2,450–5,584 ft | Perforated |
| 3,650–6,500 ft | Perforated |
Casing (7)
| Size | Set Depth | Cement |
|---|---|---|
| 42" | 125 ft | — |
| 42" | 155 ft | — |
| 36" | 687 ft | 2,740 sx |
| 30" | 1,559 ft | 1,600 sx |
| 24" | 1,925 ft | 610 sx |
| 20" | 2,482 ft | 2,385 sx |
| 16" | 2,990 ft | 2,500 sx |
Permit History (1)
Applications (1)
Records & Logs
4 completion filings on record · 3 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
- 5A
- Max Depth
- 6,500 ft
- Drill Type
- Vertical
- County
- MATAGORDA
- District
- 3
- Operator
- UNDERGROUND SERVICES MARKHAM LLC
- Completed
- 1999-01-16
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