42-297-35878

PRODUCING Horizontal

GUAJILLO UNIT 10 SOUTH

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

Permits

2

Max Depth

17,000 ft

First Permit

2017-04-13

Latest Activity

2017-04-13

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2018-06-05

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2017-07

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 265 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
QUEEN CITY 3,085 ft-2,820 ft
WILCOX 5,375 ft-5,110 ft
AUSTIN CHALK 11,124 ft-10,859 ft
EAGLE FORD - H2S (Eagle Ford)11,226 ft-10,961 ft
COOK MOUNTAIN
EDWARDS - H2S (Edwards)
FRIO - DISPOSAL (Frio)
HOCKLEY - DISPOSAL
JACKSON-YEGUA - DISPOSAL (Jackson)
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
42-297-35877 GUAJILLO UNIT 10 SOUTH · MARATHON OIL EF LLC
0.0 mi
Queen City 3,085'Wilcox 5,375'Austin Chalk 11,121'Eagle Ford 11,225'Frio Cook Mountain Edwards HOCKLEY - DISPOSAL Sligo Jackson
42-297-35874 GUAJILLO UNIT 10 SOUTH · MARATHON OIL EF LLC
0.0 mi
Queen City 3,085'Wilcox 5,375'Austin Chalk 11,101'Eagle Ford 11,204'HOCKLEY - DISPOSAL Sligo Cook Mountain Jackson Frio Edwards
42-013-35548 GUAJILLO UNIT 8 NORTH · MARATHON OIL EF LLC
0.7 mi
Queen City 3,027'Reklaw 3,389'Carrizo 4,029'Wilcox 5,317'Anacacho 10,817'Austin Chalk 11,044'Navarro Olmos Bartosh Escondido
42-013-35547 GUAJILLO UNIT 8 NORTH · MARATHON OIL EF LLC
0.7 mi
Queen City 3,027'Reklaw 3,389'Carrizo 4,029'Wilcox 5,317'Anacacho 10,812'Austin Chalk 11,044'Navarro Bartosh Escondido Olmos
42-013-35546 GUAJILLO UNIT 8 NORTH · MARATHON OIL EF LLC
0.7 mi
Queen City 3,027'Reklaw 3,389'Carrizo 4,029'Wilcox 5,317'Anacacho 10,820'Austin Chalk 11,052'Escondido Bartosh Olmos Navarro
42-013-35545 GUAJILLO UNIT 8 NORTH · MARATHON OIL EF LLC
0.7 mi
Queen City 3,027'Reklaw 3,389'Carrizo 4,029'Wilcox 5,317'Anacacho 10,825'Austin Chalk 11,053'Olmos Escondido Bartosh Navarro
42-013-35544 GUAJILLO UNIT 8 NORTH · MARATHON OIL EF LLC
0.7 mi
Queen City 3,027'Reklaw 3,389'Carrizo 4,029'Wilcox 5,317'Anacacho 10,827'Austin Chalk 11,056'Bartosh Escondido Olmos Navarro
42-013-35417 GUAJILLO UNIT 8 SOUTH · MARATHON OIL EF LLC
0.7 mi
Queen City 3,035'Reklaw 3,396'Bartosh 3,795'Carrizo 4,036'Wilcox 5,324'Navarro 8,987'Olmos 9,323'Anacacho 10,788'Austin Chalk 11,026'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
11,372–15,507 ftPerforated

Casing (3)

SizeSet DepthCement
9.625"5,460 ft1,728 sx
9.625"5,503 ft1,728 sx
5.5"15,616 ft2,090 sx

Permit History (2)

Applications (2)

#825200 A MARATHON OIL EF LLC
received 2018-04-24
#825200 A MARATHON OIL EF LLC
received 2017-04-05

Records & Logs

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

W-2/G-1 2018-06-21 log on file
W-2/G-1 2018-04-20 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 28.649836
Lon -98.279239

Well Details

Well Number
5H
Max Depth
17,000 ft
Drill Type
Horizontal
County
LIVE OAK
District
2
Completed
2018-06-05

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