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42-013-34675

SHUT IN Horizontal

MIDDLE MCCOWEN

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

Permits

1

Max Depth

16,500 ft

First Permit

2013-02-25

Latest Activity

2013-02-25

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2020-12-01

Shut-In

—

Plugged

—

P-5 Org Status: Active

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2011-08

Last Production

2026-07

Injection / Disposal

H-1 Injection Cancelled 2018-03-21 UIC #000115652 permitted 2017-09-25

Permitted Volume

2,000 mcf/d

Max Pressure

—

Injection Interval

10,746–10,924 ft

Injected (12mo)

—

Operator History

Chain of Custody

HILCORP ENERGY COMPANY 2011-2011→ MARATHON OIL EF LLC 2011-2026

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 (3) Elevation 283 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
ANACACHO 10,507 ft-10,224 ft
AUSTIN CHALK 10,748 ft-10,465 ft
EAGLE FORD 10,850 ft-10,567 ft

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 ↗

Perforations (1)

IntervalType
11,209–17,178 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,294 ft1,890 sx
5.5"17,350 ft2,020 sx

Permit History (1)

#757240 Drill Final Completion

MIDDLE MCCOWEN · 16,500 ft

2013-02-25

Spud 2013-05-31

Applications (1)

#757240 A MARATHON OIL EF LLC
received 2013-02-21

Records & Logs

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

W-2/G-1 2021-01-11
W-2/G-1 2017-02-15
W-2/G-1 2017-01-25
W-2/G-1 2013-07-23 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.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in ATASCOSA County.

Well Details

Well Number
37H
Max Depth
16,500 ft
Drill Type
Horizontal
County
ATASCOSA
District
1
Operator
MARATHON OIL EF LLC
Completed
2020-12-01

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
3,175