TEXAS · WELLS · KARNES COUNTY · API 42-255-38262 · DISTRICT 02

Miller-Ridout Unit #502H

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

Miller-Ridout Unit #502H (API 42-255-38262) 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 (amended once), issued May 5, 2025, permitted to 12,386 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

Create operator alert

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Marathon Oil EF LLC
Production reports	none
Latest permit	Marathon Oil EF LLCMay 5, 2025

12,386: total depth, ft
2: permits on file
May 5, 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

No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
907712-98	Drill	Marathon Oil EF LLC	May 14, 2025	May 5, 2025	Jun 26, 2025	17,500
907712-99	Drill	Marathon Oil EF LLC	May 1, 2025	May 5, 2025	Jun 26, 2025	17,500

Completions

Completed	Lease	Field	Operator	Status	Depth
Sep 8, 2025	Miller-Ridout Unit O-2-10071	Eagleville (Eagle Ford-2)	Marathon Oil EF LLC	Producing	12,386

Formation tops

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

Formation	MD ft	Subsea
FrioFRIO - DISPOSAL	607	-201
YeguaYEGUA - DISPOSAL	1,947	-1,541
Queen City	3,981	-3,575
Reklaw	4,779	-4,373
Carrizo	4,993	-4,587
WilcoxWILCOX - DISPOSAL	6,415	-6,009
Austin ChalkAUSTIN CHALK - H2S	11,905	-11,499
Eagle FordEAGLE FORD - H2S	12,086	-11,680
EdwardsEDWARDS - H2S	—	—
SligoSLIGO - H2S	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
12,263	17,402	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
9.625	6,087	12.25	1,626 S
5.5	17,384	8.75	2,486 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 1, 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 42-255-38262 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-255-38262 → 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 →

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/25538262, documented in the API reference.