42-321-31326
Final CompletionOHIO SUN UNIT
MATAGORDA County · District 3 · MARATHON OIL COMPANY · MARKHAM N.-BAY CITY N(MARK.7900)
Permits
4
Max Depth
8,631 ft
First Permit
1983-08-16
Latest Activity
1997-03-26
Lifespan
14 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1988-09-02
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: MARATHON OIL COMPANY ≠ Production: ALLEGIANT RESOURCES, LLC (reported 2026-04)
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 (7) Elevation 58 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| MIOCENE (Miocene (undifferentiated)) | 1,990 ft | -1,932 ft |
| MIOCENE (Miocene (undifferentiated)) | 2,500 ft | -2,442 ft |
| ANAHUAC | 5,500 ft | -5,442 ft |
| ANAHUAC | 5,700 ft | -5,642 ft |
| FRIO | 6,500 ft | -6,442 ft |
| FRIO (UPPER) (Frio) | 6,570 ft | -6,512 ft |
| FRIO | 6,900 ft | -6,842 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 |
|---|---|
| 7,720–7,734 ft | Perforated |
| 7,912–7,919 ft | Perforated |
| 8,005–8,010 ft | Perforated |
| 8,201–8,210 ft | Perforated |
| 8,239–8,249 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,898 ft | 764 sx |
| 8.625" | 1,898 ft | 714 sx |
| 5.5" | 8,631 ft | 586 sx |
| 5.5" | 8,631 ft | 2,056 sx |
Permit History (4)
OHIO - SUN UNIT · 8,631 ft
1997-03-26
Spud 1997-03-07
OHIO-SUN UNIT · 8,631 ft
1994-02-03
Spud 1993-11-02
OHIO SUN UNIT · 8,631 ft
1988-07-13
OHIO-SUN UNIT · 8,631 ft
1983-08-16
Spud 1983-10-07
Applications (5)
Records & Logs
11 completion filings on record · 5 with log images at RRC.
+5 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
- 30J
- Max Depth
- 8,631 ft
- Drill Type
- Vertical
- County
- MATAGORDA
- District
- 3
- Operator
- MARATHON OIL COMPANY
- Completed
- 1988-09-02
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