42-297-36419

PRODUCING Horizontal

GUAJILLO-STCH SA4

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

Permits

1

Max Depth

22,000 ft

First Permit

2024-03-07

Latest Activity

2024-03-07

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2024-08-09

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2024-06

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 234 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
QUEEN CITY 2,746 ft-2,512 ft
WILCOX 4,052 ft-3,818 ft
EAGLE FORD - H2S (Eagle Ford)11,015 ft-10,781 ft
AUSTIN CHALK
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
42-297-36418 GUAJILLO-IDYLWOOD SA3 · MARATHON OIL EF LLC
0.0 mi
Queen City 2,746'Wilcox 4,052'Austin Chalk 10,931'Eagle Ford 11,021'Cook Mountain Jackson Sligo Edwards Frio HOCKLEY - DISPOSAL
42-297-36417 GUAJILLO-STCH SA2 · MARATHON OIL EF LLC
0.0 mi
Queen City 2,746'Wilcox 4,052'Austin Chalk 10,934'Eagle Ford 11,027'Jackson HOCKLEY - DISPOSAL Sligo Frio Cook Mountain Edwards
42-297-36416 GUAJILLO-WHITSETT POSEY SA1 · MARATHON OIL EF LLC
0.0 mi
Queen City 2,746'Wilcox 4,052'Austin Chalk 10,928'Eagle Ford 11,020'HOCKLEY - DISPOSAL Sligo Jackson Frio Cook Mountain Edwards
42-297-35886 GUAJILLO WEST · MARATHON OIL EF LLC
0.1 mi
Queen City 2,950'Wilcox 5,240'Austin Chalk 10,910'Eagle Ford 11,029'HOCKLEY - DISPOSAL Edwards Cook Mountain Jackson Sligo Frio
42-297-35885 GUAJILLO WEST · MARATHON OIL EF LLC
0.1 mi
Queen City 2,950'Wilcox 5,240'Austin Chalk 10,911'Eagle Ford 11,030'Cook Mountain Frio Jackson Edwards Sligo HOCKLEY - DISPOSAL
42-297-35884 GUAJILLO WEST · MARATHON OIL EF LLC
0.1 mi
Queen City 2,950'Wilcox 5,240'Austin Chalk 10,928'Eagle Ford 11,048'Jackson Sligo HOCKLEY - DISPOSAL Frio Cook Mountain Edwards
42-297-35883 GUAJILLO WEST · MARATHON OIL EF LLC
0.1 mi
Queen City 2,950'Wilcox 5,240'Austin Chalk 10,927'Eagle Ford 11,043'Cook Mountain Sligo HOCKLEY - DISPOSAL Jackson Frio Edwards
42-297-35982 74 RANCH-GUAJILLO UNIT A AC · MARATHON OIL EF LLC
0.1 mi
Queen City 3,091'Wilcox 5,499'Austin Chalk 10,958'Austin Chalk 11,014'HOCKLEY - DISPOSAL Edwards Eagle Ford Cook Mountain Jackson Sligo Frio

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
11,537–19,520 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,715 ft1,375 sx
5.5"19,517 ft2,780 sx

Permit History (1)

Applications (1)

#897444 A MARATHON OIL EF LLC
received 2024-02-16

Records & Logs

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

W-2/G-1 2024-12-26
W-2/G-1 2024-09-28 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 28.636731
Lon -98.298061

Well Details

Well Number
4H
Max Depth
22,000 ft
Drill Type
Horizontal
County
LIVE OAK
District
2
Completed
2024-08-09

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