42-321-00088
Final CompletionOHIO-SUN UNIT
MATAGORDA County · District 3 · ALLEGIANT RESOURCES LLC · MARKHAM N.-BAY CITY N (MCDONALD)
Permits
1
Max Depth
8,520 ft
First Permit
1990-11-07
Latest Activity
1990-11-07
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1968-05-22
Shut-In
—
Plugged
—
EWA / Permit operator mismatch
Scheduling: ALLEGIANT RESOURCES LLC ≠ Permit: MARATHON OIL COMPANY
Resolved via: production → ALLEGIANT RESOURCES, 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
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 (3) Elevation 63 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| MIOCENE (Miocene (undifferentiated)) | 2,500 ft | -2,437 ft |
| ANAHUAC | 5,500 ft | -5,437 ft |
| FRIO | 6,500 ft | -6,437 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 (5)
| Interval | Type |
|---|---|
| 7,790–7,793 ft | Perforated |
| 8,184–8,191 ft | Perforated |
| 8,197–8,204 ft | Perforated |
| 8,220–8,228 ft | Perforated |
| 8,379–8,387 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 2,044 ft | 1,150 sx |
| 7" | 8,507 ft | 1,000 sx |
| 7" | 8,507 ft | 1,000 sx |
Permit History (1)
Applications (1)
Records & Logs
7 completion filings on record · 1 with log images at RRC.
+1 more filings
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
- 21J
- Max Depth
- 8,520 ft
- Drill Type
- Vertical
- County
- MATAGORDA
- District
- 3
- Operator
- ALLEGIANT RESOURCES LLC
- Completed
- 1968-05-22
Operator
- Name
- ALLEGIANT RES, LLC
- Location
- LAFAYETTE
- P-5 Status
- Active (filed 2025-07-22)
- Cum Oil (all leases)
- 3,341,328 bbl
- Cum Gas (all leases)
- 422,488 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 46