42-255-35881

PRODUCING Horizontal

BROWN DUPNIK B-A PSA

KARNES County · District 2 · MARATHON OIL EF LLC · EAGLEVILLE (EAGLE FORD-2)

Permits

1

Max Depth

20,000 ft

First Permit

2018-04-13

Latest Activity

2018-04-13

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2022-06-08

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2018-08

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 (10) Elevation 404 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YEGUA - DISPOSAL (Yegua)1,917 ft-1,513 ft
QUEEN CITY 4,314 ft-3,910 ft
REKLAW 4,711 ft-4,307 ft
CARRIZO 5,302 ft-4,898 ft
WILCOX - DISPOSAL (Wilcox)6,474 ft-6,070 ft
AUSTIN CHALK - H2S (Austin Chalk)11,618 ft-11,214 ft
EAGLE FORD - H2S (Eagle Ford)11,804 ft-11,400 ft
EDWARDS - H2S (Edwards)
FRIO - DISPOSAL (Frio)
SLIGO - H2S (Sligo)

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
42-255-35880 B. DUPNIK A-H. BROWN PSA · MARATHON OIL EF LLC
0.0 mi
Yegua 1,917'Queen City 4,314'Reklaw 4,711'Carrizo 5,302'Wilcox 6,474'Austin Chalk 11,648'Eagle Ford 11,833'Frio Edwards Sligo
42-255-33995 HOLLAND-BROWN UNIT · MARATHON OIL EF LLC
0.0 mi
Austin Chalk 1,161'Yegua 1,917'Queen City 4,314'Reklaw 4,711'Carrizo 5,302'Wilcox 6,474'Austin Chalk 11,161'Austin Chalk 11,661'Eagle Ford 11,858'Frio Sligo Edwards
42-255-33994 HOLLAND-BROWN UNIT · MARATHON OIL EF LLC
0.0 mi
Yegua 1,777'Yegua 1,917'Queen City 3,900'Queen City 4,314'Reklaw 4,397'Reklaw 4,711'Carrizo 5,036'Carrizo 5,302'Wilcox 6,350'Wilcox 6,474'Austin Chalk 11,674'Eagle Ford 11,857' +3 more
42-255-33993 HOLLAND-BROWN UNIT · MARATHON OIL EF LLC
0.0 mi
Yegua 1,777'Yegua 1,917'Queen City 3,900'Queen City 4,314'Reklaw 4,397'Reklaw 4,711'Carrizo 5,036'Carrizo 5,302'Wilcox 6,350'Wilcox 6,474'Austin Chalk 11,687'Eagle Ford 11,867' +3 more
42-255-33996 HOLLAND-BROWN UNIT · MARATHON OIL EF LLC
0.0 mi
Yegua 1,777'Yegua 1,917'Queen City 3,900'Queen City 4,314'Reklaw 4,397'Reklaw 4,711'Carrizo 5,036'Carrizo 5,302'Wilcox 6,350'Wilcox 6,474'Austin Chalk 11,690'Eagle Ford 11,879' +3 more
42-255-38009 KIMBLE-GILLEY GILLEY SA · MARATHON OIL EF LLC
0.5 mi
Queen City 3,450'Reklaw 3,969'Carrizo 4,914'Wilcox 5,006'Austin Chalk 11,700'Eagle Ford 11,901'Yegua Frio Sligo Edwards
42-255-38008 BRYSCH ADAMS-BRYSCH JONAS C SA1 · MARATHON OIL EF LLC
0.5 mi
Queen City 3,450'Carrizo 3,914'Reklaw 3,969'Carrizo 4,914'Wilcox 5,006'Austin Chalk 11,790'Eagle Ford 11,978'Sligo Frio Edwards Yegua
42-255-37002 JORDAN-BUEHRING UNIT SA · MARATHON OIL EF LLC
0.8 mi
Yegua 1,750'Queen City 3,680'Reklaw 4,270'Carrizo 4,860'Wilcox 4,910'Austin Chalk 11,621'Eagle Ford 11,809'Frio Sligo Edwards

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 (2)

IntervalType
12,163–18,467 ftPerforated
12,168–18,467 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,969 ft1,752 sx
5.5"18,566 ft3,065 sx

Permit History (1)

Applications (1)

#838255 A MARATHON OIL EF LLC
received 2018-04-02

Records & Logs

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

W-2/G-1 2022-08-18
W-2/G-1 2021-08-11 log on file
W-2/G-1 2020-08-21
W-2/G-1 2019-01-03 log on file
W-2/G-1 2018-10-06 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 28.835567
Lon -97.975289

Well Details

Well Number
1H
Max Depth
20,000 ft
Drill Type
Horizontal
County
KARNES
District
2
Completed
2022-06-08

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