← Wells

42-255-37815

Unperfed Completion Horizontal

MAY-RYAN ABC-ATLAS SA

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

Permits

1

Max Depth

18,000 ft

First Permit

2023-07-17

Latest Activity

2023-07-17

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2023-08-04

Shut-In

—

Plugged

2023-12-09

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2023-08

Last Production

2026-07

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Oil
production & DCA →
Oil
production & DCA →

Formation Tops (10) Elevation 470 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
AUSTIN CHALK - H2S (Austin Chalk)——
CARRIZO ——
EAGLE FORD - H2S (Eagle Ford)——
EDWARDS - H2S (Edwards)——
FRIO - DISPOSAL (Frio)——
QUEEN CITY ——
REKLAW ——
SLIGO - H2S (Sligo)——
WILCOX - DISPOSAL (Wilcox)——
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'Sligo —Frio —Yegua —Edwards —
✓ 42-255-37811 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 —Yegua —
✓ 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'Yegua —Edwards —Frio —Sligo —
✓ 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).

Casing (1)

SizeSet DepthCement
9.625"5,598 ft1,411 sx

Permit History (1)

#891753 Drill Unperfed Completion

MAY-RYAN ABC-ATLAS SA · 18,000 ft

2023-07-17

Spud 2023-08-02

Applications (1)

#891753 A MARATHON OIL EF LLC
received 2023-06-29

Records & Logs

2 completion filings on record.

W-2/G-1 2024-05-14
W-2/G-1 2023-11-20
Completion packets + logs ↗ Wellbore filings ↗

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.

Google Maps → Explorer Map →
Lat 28.828527
Lon -98.047565

Well Details

Well Number
1H
Max Depth
18,000 ft
Drill Type
Horizontal
County
KARNES
District
2
Operator
MARATHON OIL EF LLC
Completed
2023-08-04

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