42-161-31394

Final Completion

DUNLAP GAS UNIT #1

FREESTONE County · District 5 · MARATHON OIL COMPANY · REED (HAYNESVILLE)

Permits

Max Depth

13,000 ft

First Permit

1996-11-15

Latest Activity

2000-02-14

Lifespan

3 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1997-01-16

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: MARATHON OIL COMPANY ≠ Production: HILCORP ENERGY COMPANY (reported 2026-04)

Resolved via: production → HILCORP ENERGY COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1997-01

Last Production

2026-07

Operator History

Chain of Custody

MARATHON OIL COMPANY 1997-2002→ XTO ENERGY INC. 2002-2023→ HILCORP ENERGY COMPANY 2024-2026

Lease Production

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

Formation Tops (8) Elevation 351 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
BUDA	4,773 ft	-4,422 ft
GLEN ROSE	6,097 ft	-5,746 ft
B. MASS. ANHYDRITE	7,234 ft	-6,883 ft
PETTIT	7,898 ft	-7,547 ft
TRAVIS PEAK	8,100 ft	-7,749 ft
COTTON VALLEY	9,695 ft	-9,344 ft
BOSSIER SHALE (Bossier)	11,200 ft	-10,849 ft
COTTON VALLEY LM (Cotton Valley)	12,014 ft	-11,663 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 (8)

Interval	Type
11,024–11,040 ft	Perforated
11,024–11,156 ft	Perforated
11,064–11,082 ft	Perforated
11,100–11,156 ft	Perforated
11,181–11,201 ft	Perforated
11,371–11,386 ft	Perforated
12,022–12,064 ft	Perforated
12,022–12,106 ft	Perforated

Casing (4)

Size	Set Depth	Cement
8.625"	2,582 ft	535 sx
8.625"	2,582 ft	635 sx
4.5"	12,465 ft	800 sx
4.5"	12,465 ft	800 sx

Permit History (2)

#492065 Recompletion Final Completion

DUNLAP GAS UNIT · 12,465 ft

2000-02-14

Spud 1999-09-21

#455180 Drill Final Completion

DUNLAP GAS UNIT #1 · 13,000 ft

1996-11-15

Spud 1996-11-16

Applications (2)

#492065 A MARATHON OIL COMPANY

received 2000-02-14

#455180 A MARATHON OIL COMPANY

received 1996-11-15

Records & Logs

5 completion filings on record · 2 with log images at RRC.

W-2/G-1 2025-06-19

W-2/G-1 1999-12-10 log on file

W-2/G-1 2000-03-30

W-2/G-1 1997-02-07 log on file

W-2/G-1 1997-03-12

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 FREESTONE County.

Well Details

Well Number: 3
Max Depth: 13,000 ft
Drill Type: Vertical
County: FREESTONE
District: 5
Operator: MARATHON OIL COMPANY
Completed: 1997-01-16

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