← Wells

42-177-33740

Final Completion Horizontal

BARNHART (EF) G

GONZALES County · District 1 · MARATHON OIL EF LLC

Permits

2

Max Depth

20,000 ft

First Permit

2016-08-29

Latest Activity

2018-08-31

Lifespan

2 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2013-12

Last Production

2026-07

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 (9) Elevation 250 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
REKLAW 3,384 ft-3,134 ft
REKLAW 3,838 ft-3,588 ft
CARRIZO 4,216 ft-3,966 ft
WILCOX - DISPOSAL (Wilcox)5,286 ft-5,036 ft
AUSTIN CHALK - H2S (Austin Chalk)11,077 ft-10,827 ft
EAGLE FORD - H2S (Eagle Ford)11,659 ft-11,409 ft
BUDA - H2S, DISPOSAL (Buda)——
EDWARDS - H2S (Edwards)——
NAVARRO ——

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 ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section
✓ 42-177-33741 BARNHART (EF) G · MARATHON OIL EF LLC
0.0 mi
Reklaw 3,838'Carrizo 4,215'Wilcox 5,285'Austin Chalk 11,056'Eagle Ford 11,655'Buda —Edwards —Navarro —
✓ 42-177-33682 WALKER · EOG RESOURCES, INC.
0.7 mi
Reklaw 3,480'Wilcox 3,877'Carrizo 4,059'Navarro 9,030'Anacacho 10,434'Austin Chalk 10,783'Eagle Ford 11,229'Edwards —Buda —
✓ 42-177-34472 BARNHART (EF) 2H UNIT-J UNIT SA · MARATHON OIL EF LLC
0.9 mi
Reklaw 3,319'Carrizo 3,744'Wilcox 3,953'Austin Chalk 11,001'Eagle Ford 11,667'Buda —Navarro —Edwards —
✓ 42-177-34467 BARNHART (EF) · MARATHON OIL EF LLC
0.9 mi
Reklaw 3,319'Carrizo 3,744'Wilcox 3,953'Austin Chalk 10,990'Eagle Ford 11,598'Buda —Navarro —Edwards —
✓ 42-177-34471 BARNHART (EF) 2H UNIT · MARATHON OIL EF LLC
0.9 mi
Reklaw 3,319'Carrizo 3,744'Wilcox 3,853'Austin Chalk 10,999'Eagle Ford 11,662'Edwards —Buda —Navarro —
✓ 42-177-34468 BARNHART (EF) · MARATHON OIL EF LLC
0.9 mi
Reklaw 3,319'Carrizo 3,744'Wilcox 3,953'Austin Chalk 10,999'Eagle Ford 11,626'Buda —Navarro —Edwards —
✓ 42-177-34470 BARNHART (EF) 2H UNIT · MARATHON OIL EF LLC
0.9 mi
Reklaw 3,319'Carrizo 3,744'Wilcox 3,953'Austin Chalk 11,008'Eagle Ford 11,663'Buda —Edwards —Navarro —
✓ 42-177-34469 BARNHART (EF) 2H UNIT SA · MARATHON OIL EF LLC
1.0 mi
Reklaw 3,319'Carrizo 3,744'Wilcox 3,953'Wilcox 3,959'Austin Chalk 11,037'Eagle Ford 11,676'Edwards —Navarro —Buda —

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Perforations (1)

IntervalType
11,805–17,710 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,305 ft1,575 sx
5.5"17,808 ft3,150 sx

Permit History (2)

#844199 Drill Final Completion

BARNHART (EF) G · 20,000 ft

2018-08-31

Spud 2019-04-26

#817907 Drill

BARNHART (EF) G · 18,300 ft

2016-08-29

Applications (2)

#844199 A MARATHON OIL EF LLC
received 2018-08-30
#817907 A MARATHON OIL EF LLC
received 2016-08-22

Records & Logs

3 completion filings on record · 3 with log images at RRC.

W-2/G-1 2019-09-23 log on file
W-2/G-1 2019-05-28 log on file
W-2/G-1 2018-10-25 log on file
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.

Google Maps → Explorer Map →
Lat 29.221361
Lon -97.498259

Well Details

Well Number
6H
Max Depth
20,000 ft
Drill Type
Horizontal
County
GONZALES
District
1
Operator
MARATHON OIL EF LLC

Operator

Location
HOUSTON
P-5 Status
Active (filed 2025-09-26)
Cum Oil (all leases)
409,189,156 bbl
Cum Gas (all leases)
1,029,735,602 mcf
Activities
CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits
3,166