42-255-37622

PRODUCING Horizontal

FORISTER 541 A-B SA

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

Permits

1

Max Depth

22,000 ft

First Permit

2022-09-20

Latest Activity

2022-09-20

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2024-05-06

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2022-11

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 414 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
QUEEN CITY 2,845 ft-2,431 ft
REKLAW 3,391 ft-2,977 ft
CARRIZO 3,928 ft-3,514 ft
WILCOX - DISPOSAL (Wilcox)4,021 ft-3,607 ft
AUSTIN CHALK - H2S (Austin Chalk)10,816 ft-10,402 ft
EAGLE FORD - H2S (Eagle Ford)11,059 ft-10,645 ft
EDWARDS - H2S (Edwards)
FRIO - DISPOSAL (Frio)
SLIGO - H2S (Sligo)
YEGUA - DISPOSAL (Yegua)

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
42-255-37621 FORISTER-JANYSEK UNIT · MARATHON OIL EF LLC
0.0 mi
Queen City 2,845'Reklaw 3,391'Carrizo 3,928'Wilcox 4,021'Austin Chalk 10,853'Eagle Ford 11,081'Yegua Sligo Frio Edwards
42-255-37186 FORISTER 541 UNIT B · MARATHON OIL EF LLC
0.0 mi
Queen City 3,326'Reklaw 3,921'Carrizo 4,406'Wilcox 7,086'Austin Chalk 10,838'Eagle Ford 11,086'Yegua Sligo Frio Edwards
42-255-37187 FORISTER 541 UNIT B · MARATHON OIL EF LLC
0.0 mi
Queen City 3,326'Reklaw 3,921'Carrizo 4,406'Wilcox 7,086'Austin Chalk 10,847'Eagle Ford 11,093'Yegua Frio Edwards Sligo
42-255-37188 FORISTER 541 UNIT B · MARATHON OIL EF LLC
0.0 mi
Queen City 3,326'Reklaw 3,921'Carrizo 4,406'Wilcox 7,996'Austin Chalk 10,857'Eagle Ford 11,100'Frio Yegua Sligo Edwards
42-255-37189 FORISTER 541 UNIT B · MARATHON OIL EF LLC
0.1 mi
Queen City 3,326'Reklaw 3,921'Carrizo 4,406'Wilcox 7,996'Austin Chalk 10,872'Eagle Ford 11,335'Yegua Sligo Frio Edwards
42-255-37190 FORISTER 541 B-M. MOCZYGEMBA SA · MARATHON OIL EF LLC
0.1 mi
Queen City 3,326'Reklaw 3,921'Carrizo 4,406'Wilcox 7,086'Austin Chalk 10,886'Eagle Ford 11,130'Yegua Frio Edwards Sligo
42-255-36555 FORISTER-541 UNIT A · MARATHON OIL EF LLC
0.3 mi
Yegua 1,369'Queen City 3,385'Reklaw 3,720'Carrizo 4,515'Wilcox 5,765'Austin Chalk 10,810'Eagle Ford 11,046'Sligo Frio Edwards
42-255-36556 FORISTER-541 UNIT A · MARATHON OIL EF LLC
0.3 mi
Queen City 3,385'Reklaw 3,720'Carrizo 4,515'Wilcox 5,765'Austin Chalk 10,790'Eagle Ford 11,029'Edwards Yegua Frio Sligo

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
11,499–17,507 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,549 ft1,382 sx
6"17,507 ft2,749 sx

Permit History (1)

Applications (1)

#883795 A MARATHON OIL EF LLC
received 2022-09-08

Records & Logs

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

W-2/G-1 2024-07-09 log on file
W-2/G-1 2023-06-19
W-2/G-1 2023-04-10 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 28.885547
Lon -97.999703

Well Details

Well Number
1H
Max Depth
22,000 ft
Drill Type
Horizontal
County
KARNES
District
2
Completed
2024-05-06

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