42-255-35627

PRODUCING Horizontal

MAY B UNIT

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

Permits

1

Max Depth

22,000 ft

First Permit

2017-09-19

Latest Activity

2017-09-19

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2018-03-06

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2018-03

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 506 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YEGUA - DISPOSAL (Yegua)2,209 ft-1,703 ft
QUEEN CITY 4,606 ft-4,100 ft
REKLAW 5,003 ft-4,497 ft
CARRIZO 5,594 ft-5,088 ft
WILCOX - DISPOSAL (Wilcox)6,766 ft-6,260 ft
AUSTIN CHALK - H2S (Austin Chalk)12,470 ft-11,964 ft
EAGLE FORD - H2S (Eagle Ford)12,555 ft-12,049 ft
EDWARDS - H2S (Edwards)
FRIO - DISPOSAL (Frio)
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
42-255-35628 MAY B UNIT · MARATHON OIL EF LLC
0.0 mi
Yegua 2,209'Queen City 4,606'Reklaw 5,003'Carrizo 5,594'Wilcox 6,766'Austin Chalk 12,476'Eagle Ford 12,563'Sligo Frio Edwards
42-255-35626 MAY B UNIT · MARATHON OIL EF LLC
0.0 mi
Yegua 2,209'Queen City 4,606'Reklaw 5,003'Carrizo 5,594'Wilcox 6,766'Austin Chalk 12,466'Eagle Ford 12,551'Frio Sligo Edwards
42-255-35625 MAY B UNIT · MARATHON OIL EF LLC
0.0 mi
Yegua 2,209'Queen City 4,606'Reklaw 5,003'Carrizo 5,594'Wilcox 6,766'Austin Chalk 12,462'Eagle Ford 12,550'Frio Sligo Edwards
42-255-35641 MAY B UNIT AC · MARATHON OIL EF LLC
0.1 mi
Yegua 2,169'Queen City 4,567'Reklaw 4,964'Carrizo 5,554'Austin Chalk 12,451'Frio Sligo Wilcox Edwards Eagle Ford
42-255-35640 MAY B UNIT · MARATHON OIL EF LLC
0.1 mi
Yegua 2,169'Queen City 4,567'Reklaw 4,964'Carrizo 5,554'Austin Chalk 12,299'Austin Chalk 12,459'Eagle Ford 12,548'Frio Wilcox Edwards Sligo
42-255-35639 MAY B UNIT · MARATHON OIL EF LLC
0.1 mi
Yegua 2,169'Queen City 4,567'Reklaw 4,964'Carrizo 5,554'Austin Chalk 12,455'Eagle Ford 12,548'Frio Sligo Wilcox Edwards
42-255-35638 MAY B UNIT · MARATHON OIL EF LLC
0.1 mi
Yegua 2,169'Queen City 4,567'Reklaw 4,964'Carrizo 5,554'Austin Chalk 12,450'Eagle Ford 12,542'Frio Sligo Wilcox Edwards
42-255-35838 HOLLMAN UNIT · MARATHON OIL EF LLC
1.2 mi
Yegua 1,917'Queen City 4,314'Reklaw 4,711'Carrizo 5,302'Wilcox 6,474'Austin Chalk 12,217'Eagle Ford 12,338'Sligo Frio Edwards

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
12,698–20,933 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,974 ft1,670 sx
5.5"21,043 ft3,621 sx

Permit History (1)

Applications (1)

#830916 A MARATHON OIL EF LLC
received 2017-09-13

Records & Logs

1 completion filing on record · 1 with log images at RRC.

W-2/G-1 2018-04-23 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 28.777553
Lon -97.950425

Well Details

Well Number
22H
Max Depth
22,000 ft
Drill Type
Horizontal
County
KARNES
District
2
Completed
2018-03-06

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