42-013-36105

PRODUCING Horizontal

MIDDLE MCCOWEN

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

Permits

1

Max Depth

22,000 ft

First Permit

2023-09-27

Latest Activity

2023-09-27

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2024-05-20

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2011-08

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 (11) Elevation 233 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
COOK MOUNTAIN 1,248 ft-1,015 ft
QUEEN CITY 2,172 ft-1,939 ft
REKLAW 2,817 ft-2,584 ft
CARRIZO 3,586 ft-3,353 ft
WILCOX - DISPOSAL (Wilcox)3,684 ft-3,451 ft
ANACACHO - H2S (Anacacho)10,040 ft-9,807 ft
AUSTIN CHALK - H2S, DISPOSAL (Austin Chalk)10,284 ft-10,051 ft
BARTOSH
ESCONDIDO - H2S, DISPOSAL (Escondido)
NAVARRO - H2S (Navarro)
OLMOS - DISPOSAL (Olmos)

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
42-013-36106 MIDDLE MCCOWEN · MARATHON OIL EF LLC
0.0 mi
Cook Mountain 1,248'Queen City 2,172'Reklaw 2,817'Carrizo 3,586'Wilcox 3,684'Wilcox 3,684'Anacacho 10,036'Anacacho 10,036'Austin Chalk 10,281'Austin Chalk 10,281'Eagle Ford 10,409'Escondido +3 more
42-013-36104 MIDDLE MCCOWEN · MARATHON OIL EF LLC
0.0 mi
Queen City 1,248'Cook Mountain 1,248'Reklaw 2,817'Carrizo 3,586'Wilcox 3,684'Anacacho 10,035'Austin Chalk 10,286'Bartosh Escondido Olmos Navarro
42-013-36107 MIDDLE MCCOWEN · MARATHON OIL EF LLC
0.0 mi
Queen City 2,172'Reklaw 2,817'Carrizo 3,586'Wilcox 3,684'Anacacho 10,032'Austin Chalk 10,280'Olmos Escondido Bartosh Navarro
42-013-35954 MIDDLE MCCOWEN · MARATHON OIL EF LLC
0.0 mi
Queen City 2,127'Reklaw 2,772'Carrizo 3,541'Wilcox 3,638'Anacacho 10,017'Austin Chalk 10,237'Bartosh Navarro Escondido Olmos
42-013-35955 MIDDLE MCCOWEN · MARATHON OIL EF LLC
0.0 mi
Queen City 2,127'Reklaw 2,772'Carrizo 3,541'Wilcox 3,638'Anacacho 10,013'Austin Chalk 10,269'Olmos Bartosh Escondido Navarro
42-013-35956 MIDDLE MCCOWEN · MARATHON OIL EF LLC
0.0 mi
Queen City 2,127'Reklaw 2,772'Carrizo 3,541'Wilcox 3,638'Anacacho 10,019'Austin Chalk 10,268'Olmos Bartosh Escondido Navarro
42-013-35957 MIDDLE MCCOWEN · MARATHON OIL EF LLC
0.0 mi
Queen City 2,127'Reklaw 2,772'Carrizo 3,541'Wilcox 3,638'Anacacho 10,018'Austin Chalk 10,269'Eagle Ford 10,422'Navarro Bartosh Buda Escondido Olmos
42-013-35953 MIDDLE MCCOWEN · MARATHON OIL EF LLC
0.4 mi
Queen City 2,379'Reklaw 2,818'Carrizo 3,585'Wilcox 3,683'Anacacho 10,033'Austin Chalk 10,283'Navarro Bartosh Escondido Olmos

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
10,888–20,866 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,207 ft1,272 sx
5.5"20,866 ft4,060 sx

Permit History (1)

Applications (1)

#894061 A MARATHON OIL EF LLC
received 2023-09-26

Records & Logs

2 completion filings on record · 1 with log images at RRC.

W-2/G-1 2024-08-06
W-2/G-1 2024-01-29 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 28.671839
Lon -98.361481

Well Details

Well Number
182H
Max Depth
22,000 ft
Drill Type
Horizontal
County
ATASCOSA
District
1
Completed
2024-05-20

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