42-321-00047
Final CompletionOHIO-SUN UNIT
MATAGORDA County · District 3 · MARATHON OIL COMPANY · MARKHAM N.-BAY CITY N(MARK.7900)
Permits
1
Max Depth
8,125 ft
First Permit
1980-12-23
Latest Activity
1980-12-23
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: MARATHON OIL COMPANY ≠ Production: ALLEGIANT RESOURCES, LLC (reported 2024-06)
Resolved via: scheduling → MARATHON OIL COMPANY
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
No tops on file for this well. Formation tops come from W-2/G-1 completion filings — this well has none yet, which is normal for permits that were never drilled, dry holes plugged without a filing, or wells completed before digital records. Offset-well tops can't be shown either — this well has no surface coordinates on file yet.
Perforations (2)
| Interval | Type |
|---|---|
| 7,666–7,670 ft | Perforated |
| 7,889–7,892 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,517 ft | 800 sx |
| 5.5" | 6,009 ft | — |
| 2.375" | 7,543 ft | — |
| 5.5" | 8,119 ft | 1,000 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
- 12 A
- Max Depth
- 8,125 ft
- Drill Type
- Vertical
- County
- MATAGORDA
- District
- 3
- Operator
- MARATHON OIL COMPANY
Operator
- Name
- MARATHON OIL CO
- Location
- HOUSTON
- P-5 Status
- Active (filed 2025-08-14)
- Cum Oil (all leases)
- 183,150,113 bbl
- Cum Gas (all leases)
- 1,013,063,895 mcf
- Activities
- CSGD/P, G/PUR
- Total Permits
- 3,707