42-255-37031

PRODUCING Horizontal

MEDINA-JONAS UNIT A

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

Permits

1

Max Depth

22,000 ft

First Permit

2020-11-09

Latest Activity

2020-11-09

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2021-11-27

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2011-11

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 379 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YEGUA - DISPOSAL (Yegua)1,112 ft-733 ft
QUEEN CITY 3,127 ft-2,748 ft
REKLAW 3,463 ft-3,084 ft
CARRIZO 4,258 ft-3,879 ft
WILCOX - DISPOSAL (Wilcox)5,508 ft-5,129 ft
AUSTIN CHALK - H2S (Austin Chalk)11,162 ft-10,783 ft
EAGLE FORD - H2S (Eagle Ford)11,395 ft-11,016 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
42-255-37030 MEDINA-JONAS UNIT A · MARATHON OIL EF LLC
0.0 mi
Yegua 1,112'Queen City 3,127'Reklaw 3,463'Carrizo 4,258'Wilcox 5,508'Austin Chalk 11,232'Eagle Ford 11,389'Frio Edwards Sligo
42-255-37032 MEDINA-JONAS A-SALGE-KINKLER SA · MARATHON OIL EF LLC
0.0 mi
Yegua 1,112'Queen City 3,127'Reklaw 3,463'Carrizo 4,258'Wilcox 5,508'Austin Chalk 11,177'Eagle Ford 11,416'Frio Sligo Edwards
42-255-34444 MEDINA-JONAS UNIT A · MARATHON OIL EF LLC
0.3 mi
Yegua 1,638'Queen City 3,653'Reklaw 3,988'Carrizo 4,784'Wilcox 6,033'Austin Chalk 11,136'Eagle Ford 11,384'Frio Sligo Edwards
42-255-34446 MEDINA-JONAS UNIT A · MARATHON OIL EF LLC
0.3 mi
Yegua 1,638'Queen City 3,653'Reklaw 3,988'Carrizo 4,784'Wilcox 6,033'Austin Chalk 11,125'Eagle Ford 11,358'Frio Sligo Edwards
42-255-37297 MEDINA-JONAS UNIT A · MARATHON OIL EF LLC
0.6 mi
Yegua 1,657'Queen City 3,673'Reklaw 4,008'Carrizo 4,803'Wilcox 5,653'Austin Chalk 11,142'Eagle Ford 11,379'Sligo Frio Edwards
42-255-37299 RODRIGUEZ-TRIAL UNIT · MARATHON OIL EF LLC
0.6 mi
Yegua 1,648'Queen City 3,661'Reklaw 3,995'Carrizo 4,788'Wilcox 5,995'Austin Chalk 11,119'Eagle Ford 11,339'Sligo Frio Edwards
42-255-37298 RODRIGUEZ-TRIAL UNIT · MARATHON OIL EF LLC
0.6 mi
Yegua 1,636'Queen City 3,650'Reklaw 3,984'Carrizo 4,777'Wilcox 6,024'Austin Chalk 11,109'Eagle Ford 11,321'Sligo Frio Edwards
42-255-38058 RIPPSTEIN-HONS RAFTER SA2 · MARATHON OIL EF LLC
0.9 mi
Reklaw 3,763'Carrizo 4,641'Wilcox 4,771'Austin Chalk 11,282'Eagle Ford 11,490'Frio Queen City Yegua Sligo 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
11,774–17,518 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,764 ft1,435 sx
5.5"17,518 ft3,170 sx

Permit History (1)

Applications (1)

#865858 A MARATHON OIL EF LLC
received 2020-10-29

Records & Logs

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

W-2/G-1 2021-12-10 log on file
W-2/G-1 2022-02-17 log on file
W-2/G-1 2021-02-04 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 28.892647
Lon -97.965421

Well Details

Well Number
6H
Max Depth
22,000 ft
Drill Type
Horizontal
County
KARNES
District
2
Completed
2021-11-27

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