42-013-35552

SHUT IN Horizontal

GUAJILLO EAST

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

Permits

2

Max Depth

20,000 ft

First Permit

2017-11-10

Latest Activity

2017-11-10

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2021-12-07

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2014-03

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 250 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
QUEEN CITY 3,062 ft-2,812 ft
REKLAW 3,424 ft-3,174 ft
BARTOSH 3,822 ft-3,572 ft
CARRIZO 4,064 ft-3,814 ft
WILCOX - DISPOSAL (Wilcox)5,352 ft-5,102 ft
NAVARRO - H2S (Navarro)9,014 ft-8,764 ft
OLMOS - DISPOSAL (Olmos)9,350 ft-9,100 ft
ANACACHO - H2S (Anacacho)10,840 ft-10,590 ft
AUSTIN CHALK - H2S, DISPOSAL (Austin Chalk)11,060 ft-10,810 ft
ESCONDIDO - H2S, DISPOSAL (Escondido)

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
42-013-35553 GUAJILLO EAST · MARATHON OIL EF LLC
0.0 mi
Queen City 3,062'Reklaw 3,424'Bartosh 3,822'Carrizo 4,064'Wilcox 5,352'Navarro 9,014'Olmos 9,350'Anacacho 10,835'Austin Chalk 11,055'Eagle Ford 11,165'Georgetown Edwards +2 more
42-013-35554 GUAJILLO EAST · MARATHON OIL EF LLC
0.0 mi
Queen City 3,062'Reklaw 3,424'Bartosh 3,822'Carrizo 4,064'Wilcox 5,352'Navarro 9,014'Olmos 9,350'Anacacho 10,836'Austin Chalk 11,052'Escondido
42-013-35551 GUAJILLO EAST · MARATHON OIL EF LLC
0.0 mi
Queen City 3,062'Reklaw 3,424'Bartosh 3,822'Carrizo 4,064'Wilcox 5,352'Navarro 9,014'Olmos 9,350'Anacacho 10,828'Austin Chalk 11,051'Escondido
42-013-35550 GUAJILLO EAST · MARATHON OIL EF LLC
0.0 mi
Queen City 3,062'Reklaw 3,424'Bartosh 3,822'Carrizo 4,064'Wilcox 5,352'Navarro 9,014'Olmos 9,350'Anacacho 10,838'Austin Chalk 11,058'Escondido
42-013-35377 GUAJILLO UNIT 7 SOUTH · MARATHON OIL EF LLC
0.0 mi
Queen City 3,034'Reklaw 3,396'Bartosh 3,794'Carrizo 4,035'Wilcox 5,324'Navarro 8,986'Olmos 9,322'Anacacho 10,811'Austin Chalk 11,048'Escondido
42-013-35375 GUAJILLO UNIT 7 SOUTH · MARATHON OIL EF LLC
0.0 mi
Queen City 3,034'Reklaw 3,396'Bartosh 3,794'Carrizo 4,035'Wilcox 5,324'Navarro 8,986'Olmos 9,322'Anacacho 10,815'Austin Chalk 11,047'Escondido
42-013-35376 GUAJILLO UNIT 7 SOUTH · MARATHON OIL EF LLC
0.0 mi
Queen City 3,034'Reklaw 3,396'Bartosh 3,794'Carrizo 4,035'Wilcox 5,324'Navarro 8,986'Olmos 9,322'Anacacho 10,815'Austin Chalk 11,047'Escondido
42-013-35374 GUAJILLO UNIT 7 SOUTH · MARATHON OIL EF LLC
0.0 mi
Queen City 3,034'Reklaw 3,396'Bartosh 3,794'Carrizo 4,035'Wilcox 5,324'Navarro 8,986'Olmos 9,322'Anacacho 10,811'Austin Chalk 11,045'Escondido

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
11,515–17,077 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,364 ft1,740 sx
5.5"17,182 ft2,954 sx

Permit History (2)

Applications (2)

#832678 A MARATHON OIL EF LLC
received 2019-02-12
#832678 A MARATHON OIL EF LLC
received 2017-11-02

Records & Logs

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

W-2/G-1 2022-01-06
W-2/G-1 2018-12-19 log on file
W-2/G-1 2018-09-25 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 28.661394
Lon -98.271539

Well Details

Well Number
39H
Max Depth
20,000 ft
Drill Type
Horizontal
County
ATASCOSA
District
1
Completed
2021-12-07

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