42-177-34370

PRODUCING Horizontal

BARNHART (EF) C-E SA 1

GONZALES County · District 1 · MARATHON OIL EF LLC · EAGLEVILLE (EAGLE FORD-1)

Permits

1

Max Depth

22,000 ft

First Permit

2021-02-23

Latest Activity

2021-02-23

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2024-05-31

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2021-03

Last Production

2026-07

Lease Production

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

Formation Tops (9) Elevation 240 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
AUSTIN CHALK - H2S (Austin Chalk)1,365 ft-1,125 ft
REKLAW 2,832 ft-2,592 ft
CARRIZO 3,429 ft-3,189 ft
WILCOX - DISPOSAL (Wilcox)4,516 ft-4,276 ft
AUSTIN CHALK - H2S (Austin Chalk)10,365 ft-10,125 ft
EAGLE FORD - H2S (Eagle Ford)10,979 ft-10,739 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
42-177-34371 BARNHART (EF) C-E SA 2 · MARATHON OIL EF LLC
0.0 mi
Reklaw 2,832'Carrizo 3,429'Wilcox 4,516'Austin Chalk 10,418'Eagle Ford 10,994'Buda Edwards Navarro
42-177-34372 BARNHART (EF) C-E SA 3 · MARATHON OIL EF LLC
0.0 mi
Reklaw 2,832'Carrizo 3,429'Wilcox 4,516'Austin Chalk 10,461'Eagle Ford 11,020'Edwards Navarro Buda
42-177-34469 BARNHART (EF) 2H UNIT SA · MARATHON OIL EF LLC
0.9 mi
Reklaw 3,319'Carrizo 3,744'Wilcox 3,953'Wilcox 3,959'Austin Chalk 11,037'Eagle Ford 11,676'Edwards Navarro Buda
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'Edwards Navarro Buda
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 Edwards Navarro
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 Navarro Buda
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'Edwards Navarro 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'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
11,432–19,804 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"4,935 ft1,693 sx
5.5"19,804 ft3,716 sx

Permit History (1)

Applications (1)

#867541 A MARATHON OIL EF LLC
received 2021-02-03

Records & Logs

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

W-2/G-1 2024-07-09 log on file
W-2/G-1 2024-02-02
W-2/G-1 2021-12-30
W-2/G-1 2021-07-09
W-2/G-1 2021-04-06 log on file

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.

Lat 29.247872
Lon -97.493919

Well Details

Well Number
1H
Max Depth
22,000 ft
Drill Type
Horizontal
County
GONZALES
District
1
Completed
2024-05-31

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
3,173