WELL · 42-255-37539 · DISTRICT 2

W.mejor-Dav-Jor-Fra SA #1H

Karnes County · Eagleville (Eagle Ford-2) field · Producing · Horizontal

W.Mejor-Dav-Jor-Fra SA #1H (API 42-255-37539) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed March 4, 2023 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued June 28, 2022, permitted to 27,000 ft.

Completion filings report 10 formation tops, including Queen City, Reklaw, Carrizo, Wilcox.

Its lease has reported 250K barrels of oil and 546K mcf of gas since September 2022, last reporting in July 2026.

Operator of record

Marathon Oil EF LLC

Based in: Houston, TX
P-5 status: Active (A)
P-5 last filed: Sep 26, 2025
Permits on file: 3,191
Phone: (832) 486-2737

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Marathon Oil EF LLC
Production reports	Marathon Oil EF LLCthrough Sep 2025
Latest permit	Marathon Oil EF LLCJun 28, 2022

27,000: total depth, ft
1: permits on file
Jun 28, 2022: last permit issued
Mar 4, 2023: completed
250K: cumulative oil, bbl
546K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Sep 2022 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Mar 4, 2023
Shut in: —
Plugged: —

Operator's P-5 on the schedule: Active (A)

Surface location

28.840006, -97.996144

Google Maps ↗

Permit surface location from the RRC GIS record, in Karnes County.

Lease production

PDQ LEASE REPORTS · REPORTED THROUGH APR 2026

Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
W.mejor-Dav-Jor-Fra SA O-2-12456	Eagleville (Eagle Ford-2)	Marathon Oil EF LLC	1	250K	546K	Sep 2022 – Jul 2026

Oil, barrels lease total

Last 12 months 9,456 · prior 12 40,752(-77%)

Gas, mcf lease total

Last 12 months 19,367 · prior 12 109,612(-82%)

Chain of custody

Every operator that reported production on this well's lease, in order.

1Marathon Oil EF LLCMar 2023 → Sep 2025

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
881590-99	Drill	Marathon Oil EF LLC	Jun 27, 2022	Jun 28, 2022	Sep 7, 2022	27,000

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-2-12456	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 450 ft elevation.Download CSV →

Formation	MD ft	Subsea
Queen City	3,602	-3,152
Reklaw	4,215	-3,765
Carrizo	4,746	-4,296
WilcoxWILCOX - DISPOSAL	4,811	-4,361
Austin ChalkAUSTIN CHALK - H2S	11,457	-11,007
Eagle FordEAGLE FORD - H2S	11,657	-11,207
EdwardsEDWARDS - H2S	—	—
FrioFRIO - DISPOSAL	—	—
SligoSLIGO - H2S	—	—
YeguaYEGUA - DISPOSAL	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
11,850	20,140	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
9.625	5,878	12.25	1,450 S
6	20,140	8.75	3,232 S

Completion filings

W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →

Suffix	Filed	W-2 / G-1 date	Logs referenced
00	Aug 11, 2023	Jun 29, 2023	Yes
00	Nov 16, 2022	Sep 22, 2022	Yes

The source documents

Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.

Wellbore filings for 42-255-37539 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-255-37539 → scanned completion filings

Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.

Nearby wells and their tops

NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM

Draw a cross-section

This well's tops beside its 5 nearest neighbors, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Hedtke-H.henke-Davenport SA42-255-37537

0.0 KM · Marathon Oil EF LLC · Section with this well →

Queen City	3,602	-3,153
Reklaw	4,215	-3,766
Carrizo	4,746	-4,297
Wilcox	4,811	-4,362
Austin Chalk	11,463	-11,014
Eagle Ford	11,653	-11,204
Edwards	—
Frio	—

10 TOPS · FIRST 8

Martinez-H.henke-Hedtke SA42-255-37536

0.0 KM · Marathon Oil EF LLC · Section with this well →

Queen City	3,602	-3,153
Reklaw	4,215	-3,766
Carrizo	4,746	-4,297
Wilcox	4,811	-4,362
Austin Chalk	11,445	-10,996
Eagle Ford	11,645	-11,196
Sligo	—
Edwards	—

10 TOPS · FIRST 8

H.anzaldua-Hedtke SA42-255-37535

0.0 KM · Marathon Oil EF LLC · Section with this well →

Queen City	3,602	-3,153
Reklaw	4,215	-3,766
Carrizo	4,746	-4,297
Wilcox	4,811	-4,362
Austin Chalk	11,435	-10,986
Eagle Ford	11,629	-11,180
Yegua	—
Frio	—

10 TOPS · FIRST 8

Scheele-Huth Unit A42-255-37533

0.0 KM · Marathon Oil EF LLC · Section with this well →

Queen City	3,602	-3,153
Reklaw	4,215	-3,766
Carrizo	4,746	-4,297
Wilcox	4,811	-4,362
Austin Chalk	11,428	-10,979
Eagle Ford	11,620	-11,171
Edwards	—
Yegua	—

10 TOPS · FIRST 8

Pfeifer-Pfeifer Bell SA42-255-37670

0.8 KM · Marathon Oil EF LLC · Section with this well →

Queen City	3,592	-3,118
Reklaw	4,181	-3,707
Carrizo	4,744	-4,270
Wilcox	4,798	-4,324
Austin Chalk	11,370	-10,896
Eagle Ford	11,564	-11,090
Yegua	—
Edwards	—

10 TOPS · FIRST 8

Best Bateman-Best Beard SA42-255-37669

0.8 KM · Marathon Oil EF LLC · Section with this well →

Queen City	3,592	-3,122
Reklaw	4,181	-3,711
Carrizo	4,744	-4,274
Wilcox	4,798	-4,328
Austin Chalk	11,362	-10,892
Eagle Ford	11,559	-11,089
Yegua	—
Edwards	—

10 TOPS · FIRST 8

Hedtke-Henke Unit42-255-37674

0.9 KM · Marathon Oil EF LLC · Section with this well →

Queen City	3,620	-3,166
Reklaw	4,213	-3,759
Carrizo	4,716	-4,262
Wilcox	4,799	-4,345
Austin Chalk	11,408	-10,954
Eagle Ford	11,603	-11,149
Sligo	—
Yegua	—

10 TOPS · FIRST 8

Hedtke-Henke Unit42-255-37675

0.9 KM · Marathon Oil EF LLC · Section with this well →

Queen City	3,620	-3,166
Reklaw	4,213	-3,759
Carrizo	4,716	-4,262
Wilcox	4,799	-4,345
Austin Chalk	11,426	-10,972
Eagle Ford	11,623	-11,169
Yegua	—
Edwards	—

10 TOPS · FIRST 8

About this data

Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.

New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease

Developers: this page as JSON is GET /v1/data/wells/25537539, documented in the API reference.