42-013-34543

PRODUCING Horizontal

R. MAY B

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

Permits

Max Depth

18,456 ft

First Permit

2012-06-18

Latest Activity

2014-01-14

Lifespan

2 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2023-11-18

Shut-In

—

Plugged

—

P-5 Org Status: Active

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2012-09

Last Production

2026-07

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 (4) Elevation 285 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
ANACACHO	10,770 ft	-10,485 ft
ANCACHO	10,770 ft	-10,485 ft
AUSTIN CHALK	10,980 ft	-10,695 ft
EAGLE FORD	11,079 ft	-10,794 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 (2)

Interval	Type
11,915–18,384 ft	Perforated
11,945–18,384 ft	Perforated

Casing (2)

Size	Set Depth	Cement
9.625"	4,400 ft	1,550 sx
5.5"	18,506 ft	3,272 sx

Permit History (2)

#776424 Recompletion Final Completion

R. MAY B · 18,456 ft

2014-01-14

Spud 2012-07-16

#742505 Drill Final Completion

R. MAY B · 16,500 ft

2012-06-18

Spud 2012-07-16

Applications (2)

#776424 A MARATHON OIL EF LLC

received 2013-12-31

#742505 A MARATHON OIL EF LLC

received 2012-06-08

Records & Logs

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

W-2/G-1 2024-02-08

W-2/G-1 2020-01-29

W-2/G-1 2014-03-27

W-2/G-1 2013-09-10

W-2/G-1 2013-03-15

W-2/G-1 2013-01-09 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: 1H
Max Depth: 18,456 ft
Drill Type: Horizontal
County: ATASCOSA
District: 1
Operator: MARATHON OIL EF LLC
Completed: 2023-11-18

Operator

Name: MARATHON OIL EF LLC
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