42-321-00149

OHIO SUN UNIT

MATAGORDA County · District 3 · MARATHON OIL COMPANY

Permits

Max Depth

8,900 ft

First Permit

1980-07-09

Latest Activity

1988-06-22

Lifespan

8 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

MARATHON OIL COMPANY 1993-2002→ COMSTOCK OIL & GAS, INC. 2002-2004→ COMSTOCK OIL & GAS, LP 2004-2008→ PREMIER NATURAL RESOURCES, LLC 2009-2010→ ALLEGIANT RESOURCES, LLC 2020-2022

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Oil

production & DCA →

Formation Tops (3) Elevation 59 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
MIOCENE (Miocene (undifferentiated))	2,500 ft	-2,441 ft
ANAHUAC	5,500 ft	-5,441 ft
FRIO (UPPER) (Frio)	6,500 ft	-6,441 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 (3)

Interval	Type
6,881–6,887 ft	Perforated
8,210–8,215 ft	Perforated
8,388–8,393 ft	Perforated

Casing (5)

Size	Set Depth	Cement
10.75"	2,070 ft	1,150 sx
2.875"	8,115 ft	—
2.875"	8,337 ft	—
7"	8,893 ft	1,000 sx
7"	8,893 ft	1,000 sx

Permit History (3)

#347816 Recompletion

OHIO SUN UNIT · 8,900 ft

1988-06-22

#171015 Recompletion Final Completion

OHIO-SUN UNIT · 8,900 ft

1982-09-03

#86065 Recompletion

OHIO-SUN UNIT · 8,900 ft

1980-07-09

Applications (3)

#347816 A MARATHON OIL COMPANY

received 1988-06-16

#171015 A MARATHON OIL COMPANY

received 1982-09-03

#86065 A MARATHON OIL COMPANY

received 1980-07-09

Records & Logs

5 completion filings on record.

W-2/G-1 1997-04-10

W-2/G-1 1982-10-06

W-2/G-1 1981-04-07

W-2/G-1 1969-03-28

W-2/G-1 1984-01-12

Completion packets + logs ↗ Wellbore 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

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in MATAGORDA County.

Well Details

Well Number: 13F
Max Depth: 8,900 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