42-255-37811

PRODUCING Horizontal

MAY-RYAN UNIT C

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

Permits

1

Max Depth

18,000 ft

First Permit

2023-06-30

Latest Activity

2023-06-30

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2024-03-26

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2012-06

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 471 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SPARTA 2,964 ft-2,493 ft
QUEEN CITY 3,266 ft-2,795 ft
REKLAW 3,798 ft-3,327 ft
CARRIZO 4,446 ft-3,975 ft
WILCOX - DISPOSAL (Wilcox)4,504 ft-4,033 ft
ANACACHO 10,890 ft-10,419 ft
AUSTIN CHALK - H2S (Austin Chalk)11,011 ft-10,540 ft
EAGLE FORD - H2S (Eagle Ford)11,194 ft-10,723 ft
FRIO - DISPOSAL (Frio)
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
42-255-37810 MAY-RYAN UNIT C · MARATHON OIL EF LLC
0.0 mi
Sparta 2,964'Queen City 3,266'Reklaw 3,798'Carrizo 4,446'Wilcox 4,504'Anacacho 10,864'Austin Chalk 11,013'Eagle Ford 11,185'Edwards Frio Yegua Sligo
42-255-37812 MAY-RYAN UNIT C · MARATHON OIL EF LLC
0.0 mi
Sparta 2,964'Queen City 3,266'Reklaw 3,798'Carrizo 4,446'Wilcox 4,504'Anacacho 10,890'Austin Chalk 11,011'Eagle Ford 11,194'Frio Sligo Yegua Edwards
42-255-37815 MAY-RYAN ABC-ATLAS SA · MARATHON OIL EF LLC
0.0 mi
Reklaw Austin Chalk Carrizo Sligo Frio Queen City Yegua Wilcox Edwards Eagle Ford
42-255-37814 MAY-RYAN UNIT C-H.HEDTKE SA · MARATHON OIL EF LLC
0.0 mi
Sparta 2,964'Queen City 3,266'Reklaw 3,798'Carrizo 4,446'Wilcox 4,504'Anacacho 10,874'Austin Chalk 11,023'Eagle Ford 11,201'Yegua Frio Edwards
42-255-37842 MAY-RYAN ABC-ATLAS SA · MARATHON OIL EF LLC
0.0 mi
Sparta 2,964'Queen City 3,266'Reklaw 3,798'Carrizo 4,446'Wilcox 4,504'Anacacho 10,873'Austin Chalk 11,015'Eagle Ford 11,193'Yegua Edwards Frio Sligo
42-255-36296 COY CITY RANCH A UNIT · MARATHON OIL EF LLC
0.6 mi
Yegua 1,296'Queen City 3,429'Reklaw 4,085'Carrizo 4,318'Wilcox 5,737'Austin Chalk 11,000'Eagle Ford 11,186'Sligo Frio Edwards
42-255-36295 COY CITY RANCH A UNIT · MARATHON OIL EF LLC
0.6 mi
Yegua 1,296'Queen City 3,429'Reklaw 4,085'Carrizo 4,318'Wilcox 5,737'Austin Chalk 10,993'Eagle Ford 11,187'Sligo Frio Edwards
42-255-36294 COY CITY RANCH A UNIT · MARATHON OIL EF LLC
0.6 mi
Yegua 1,296'Queen City 3,429'Reklaw 4,085'Carrizo 4,318'Wilcox 5,737'Austin Chalk 10,993'Eagle Ford 11,183'Frio Sligo Carrizo Edwards Reklaw

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
11,646–16,945 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,555 ft1,411 sx
6"16,945 ft2,612 sx

Permit History (1)

Applications (1)

#891737 A MARATHON OIL EF LLC
received 2023-06-29

Records & Logs

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

W-2/G-1 2024-05-08
W-2/G-1 2024-03-13
W-2/G-1 2023-11-27 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 28.828617
Lon -98.047447

Well Details

Well Number
3H
Max Depth
18,000 ft
Drill Type
Horizontal
County
KARNES
District
2
Completed
2024-03-26

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