42-255-37187

PRODUCING Horizontal

FORISTER 541 UNIT B

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

Permits

1

Max Depth

22,000 ft

First Permit

2021-04-30

Latest Activity

2021-04-30

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2022-05-09

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2011-12

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 413 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
QUEEN CITY 3,326 ft-2,913 ft
REKLAW 3,921 ft-3,508 ft
CARRIZO 4,406 ft-3,993 ft
WILCOX - DISPOSAL (Wilcox)7,086 ft-6,673 ft
AUSTIN CHALK - H2S (Austin Chalk)10,847 ft-10,434 ft
EAGLE FORD - H2S (Eagle Ford)11,093 ft-10,680 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
42-255-37188 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'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
42-255-37189 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 10,872'Eagle Ford 11,335'Yegua Frio Edwards Sligo
42-255-37190 FORISTER 541 B-M. MOCZYGEMBA SA · MARATHON OIL EF LLC
0.0 mi
Queen City 3,326'Reklaw 3,921'Carrizo 4,406'Wilcox 7,086'Austin Chalk 10,886'Eagle Ford 11,130'Frio Yegua Sligo Edwards
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
42-255-37622 FORISTER 541 A-B SA · MARATHON OIL EF LLC
0.0 mi
Queen City 2,845'Reklaw 3,391'Carrizo 3,928'Wilcox 4,021'Austin Chalk 10,816'Eagle Ford 11,059'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
11,500–18,703 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,476 ft1,606 sx
5.5"18,740 ft2,962 sx

Permit History (1)

Applications (1)

#869421 A MARATHON OIL EF LLC
received 2021-04-26

Records & Logs

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

W-2/G-1 2022-07-11 log on file
W-2/G-1 2022-03-10
W-2/G-1 2021-08-19 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 28.885231
Lon -97.999102

Well Details

Well Number
3H
Max Depth
22,000 ft
Drill Type
Horizontal
County
KARNES
District
2
Completed
2022-05-09

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