TEXAS · WELLS · KARNES COUNTY · API 42-255-38265 · DISTRICT 02

Miller Ridout Mikkelson SA3 #3H

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

Miller Ridout Mikkelson Sa3 #3H (API 42-255-38265) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed September 8, 2025 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued June 18, 2025, permitted to 12,410 ft.

Completion filings report 10 formation tops, including Frio, Yegua, Queen City, Reklaw.

No lease production has been reported under this well’s leases.

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

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SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Marathon Oil EF LLC
Production reports	none
Latest permit	Marathon Oil EF LLCJun 18, 2025

12,410: total depth, ft
1: permits on file
Jun 18, 2025: last permit issued
Sep 8, 2025: completed
—: cumulative oil, bbl
—: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Sep 8, 2025
Shut in: —
Plugged: —

Operator's P-5 on the schedule: Active – Extension (X)

Surface location

28.870219, -97.927314 NAD27, as filed

28.870475, -97.927594 WGS84

Google Maps ↗

Permit surface location from the RRC GIS record, referenced to NAD27 as the RRC files it; the WGS84 pair is the same point through NOAA's NADCON grid, and the map link uses it, in Karnes County.

Wells nearby

Withinmiles

Every well with a location on file around this well, in any state, nearest first.

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Open the full map →

Texas locations come from drilling permits, so most older Texas wells have none and are not listed.

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
907713-99	Drill	Marathon Oil EF LLC	May 1, 2025	Jun 18, 2025	Jun 24, 2025	17,500

Completions

Completed	Lease	Field	Operator	Status	Depth
Sep 8, 2025	Miller Ridout Mikkelson SA3 O-2-13241	Eagleville (Eagle Ford-2)	Marathon Oil EF LLC	Producing	12,410

Formation tops

As filed on W-2/G-1. Subsea from 406 ft elevation.Download CSV →

Formation	MD ft	Subsea
FrioFRIO - DISPOSAL	605	-199
YeguaYEGUA - DISPOSAL	1,954	-1,548
Queen City	3,968	-3,562
Reklaw	4,769	-4,363
Carrizo	4,987	-4,581
WilcoxWILCOX - DISPOSAL	5,157	-4,751
Austin ChalkAUSTIN CHALK - H2S	11,885	-11,479
Eagle FordEAGLE FORD - H2S	12,055	-11,649
EdwardsEDWARDS - H2S	—	—
SligoSLIGO - H2S	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
12,229	18,302	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
9.625	6,097	12.25	1,820 S
5.5	18,283	8.75	3,018 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →

Suffix	RRC record date	W-2 / G-1 date	Logs referenced
00	Oct 7, 2026	Sep 9, 2026	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 42-255-38265 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-255-38265 → scanned completion filings

Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.

Find logs withinmiles of this well:List →Map →

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.

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Mikkelson-Witte SA42-255-36795

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

Yegua	2,017	-1,618
Queen City	4,189	-3,790
Reklaw	4,622	-4,223
Carrizo	5,172	-4,773
Wilcox	6,486	-6,087
Austin Chalk	11,987	-11,588
Eagle Ford	12,182	-11,783
Edwards	—

10 TOPS · FIRST 8

Witte-Spahn-Miller SA42-255-36796

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

Yegua	2,017	-1,618
Queen City	4,189	-3,790
Reklaw	4,622	-4,223
Carrizo	5,172	-4,773
Wilcox	6,486	-6,087
Austin Chalk	12,073	-11,674
Eagle Ford	12,271	-11,872
Sligo	—

10 TOPS · FIRST 8

Blue SWD42-255-36338

1.3 KM · High Roller Wells, L.L.C. · Section with this well →

Yegua	1,780	-1,376
Queen City	3,950	-3,546
Reklaw	4,375	-3,971
Carrizo	4,950	-4,546
Wilcox	6,500	-6,096
Austin Chalk	—
Eagle Ford	—
Edwards	—

10 TOPS · FIRST 8

Love Unit42-255-35618

1.3 KM · Encana Oil & Gas(usa) Inc. · Section with this well →

Yegua	1,966	-1,570
Queen City	4,089	-3,693
Reklaw	4,436	-4,040
Carrizo	4,921	-4,525
Wilcox	6,959	-6,563
Austin Chalk	12,064	-11,668
Eagle Ford	12,233	-11,837
Frio	—

10 TOPS · FIRST 8

Love Unit42-255-35615

1.3 KM · Encana Oil & Gas(usa) Inc. · Section with this well →

Yegua	2,002	-1,606
Queen City	4,190	-3,794
Reklaw	4,549	-4,153
Carrizo	5,052	-4,656
Wilcox	7,104	-6,708
Austin Chalk	12,035	-11,639
Eagle Ford	12,202	-11,806
Sligo	—

10 TOPS · FIRST 8

Franke-Makowski SA C42-255-37724

1.3 KM · Devon Energy Production Co, L.P. · Section with this well →

Frio	1,751	-1,360
Yegua	2,737	-2,346
Queen City	3,829	-3,438
Reklaw	4,265	-3,874
Carrizo	4,801	-4,410
Wilcox	5,080	-4,689
Austin Chalk	11,960	-11,569
Eagle Ford	12,129	-11,738

10 TOPS · FIRST 8

Mikkelson-Witte Unit42-255-38056

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

Queen City	3,927	-3,518
Reklaw	4,430	-4,021
Carrizo	4,950	-4,541
Wilcox	6,222	-5,813
Austin Chalk	11,734	-11,325
Eagle Ford	11,960	-11,551
Yegua	—
Edwards	—

10 TOPS · FIRST 8

Franke-Makowski SA B42-255-37723

1.3 KM · Devon Energy Production Co, L.P. · Section with this well →

Frio	1,742	-1,352
Yegua	2,735	-2,345
Queen City	3,818	-3,428
Reklaw	4,266	-3,876
Carrizo	4,791	-4,401
Wilcox	5,075	-4,685
Austin Chalk	11,946	-11,556
Eagle Ford	12,115	-11,725

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

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