42-177-34139

PRODUCING Horizontal

BARNHART (EF)

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

Permits

1

Max Depth

22,000 ft

First Permit

2019-04-12

Latest Activity

2019-04-12

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2021-03-29

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2010-11

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 (8) Elevation 242 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
REKLAW 3,106 ft-2,864 ft
CARRIZO 3,703 ft-3,461 ft
WILCOX - DISPOSAL (Wilcox)4,790 ft-4,548 ft
AUSTIN CHALK - H2S (Austin Chalk)10,567 ft-10,325 ft
EAGLE FORD - H2S (Eagle Ford)11,215 ft-10,973 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
42-177-34138 BARNHART (EF) · MARATHON OIL EF LLC
0.0 mi
Reklaw 3,106'Carrizo 3,703'Wilcox 4,790'Austin Chalk 10,604'Eagle Ford 11,259'Edwards Navarro Buda
42-177-34598 BARNHART (EF)-J.M. PRESTON SA9 · MARATHON OIL EF LLC
0.2 mi
Sparta 1,334'Queen City 2,685'Reklaw 3,037'Carrizo 3,705'Wilcox 3,805'Anacacho 10,393'Austin Chalk 10,638'Eagle Ford 11,234'Edwards Buda Navarro
42-177-34597 BARNHART (EF)-J.M. PRESTON SA8 · MARATHON OIL EF LLC
0.2 mi
Reklaw 3,037'Carrizo 3,705'Wilcox 3,805'Austin Chalk 10,648'Eagle Ford 11,259'Buda Edwards Navarro
42-177-34596 BARNHART (EF)-J.M. PRESTON SA7 · MARATHON OIL EF LLC
0.2 mi
Sparta 1,334'Queen City 2,685'Reklaw 3,037'Carrizo 3,705'Wilcox 3,805'Austin Chalk 10,651'Eagle Ford 11,259'Buda Edwards Navarro
42-177-34519 BARNHART GRAND F UNIT-E UNIT SA · MARATHON OIL EF LLC
1.3 mi
Reklaw 3,310'Wilcox 3,875'Carrizo 3,875'Wilcox 4,021'Austin Chalk 11,072'Eagle Ford 11,792'Navarro Buda Edwards
42-177-34520 BARNHART (EF) F UNIT · MARATHON OIL EF LLC
1.3 mi
Reklaw 3,310'Carrizo 3,875'Wilcox 4,021'Austin Chalk 11,075'Eagle Ford 11,793'Edwards NARVARRO EDEARDS - H2S Navarro Buda
42-177-34521 BARNHART (EF) F UNIT · MARATHON OIL EF LLC
1.3 mi
Reklaw 3,310'Carrizo 3,875'Wilcox 4,021'Austin Chalk 11,087'Eagle Ford 11,753'Buda Edwards Navarro
42-177-34522 BARNHART (EF) F UNIT-A UNIT SA · MARATHON OIL EF LLC
1.3 mi
Reklaw 3,310'Carrizo 3,875'Wilcox 4,021'Austin Chalk 11,079'Eagle Ford 11,751'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
11,372–18,594 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"4,430 ft1,276 sx
5.5"18,697 ft3,543 sx

Permit History (1)

Applications (1)

#851871 A MARATHON OIL EF LLC
received 2019-04-08

Records & Logs

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

W-2/G-1 2021-04-20 log on file
W-2/G-1 2020-08-07 log on file
W-2/G-1 2020-06-01 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 29.257422
Lon -97.475619

Well Details

Well Number
49H
Max Depth
22,000 ft
Drill Type
Horizontal
County
GONZALES
District
1
Completed
2021-03-29

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