WELL · 42-255-38061 · DISTRICT 2

Patino Unit #5H

Y

Karnes County · Sugarkane (Austin Chalk) field · Producing  · Horizontal

Patino Unit #5H (API 42-255-38061) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed January 19, 2026 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued April 18, 2024, permitted to 22,000 ft.

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

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

Operator of record

Marathon Oil EF LLC

Houston, TX · P-5 Y, filed Aug 4, 2025 · 3,191 permits on file · (800) 332-9449

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleMarathon Oil EF LLC
Production reportsMarathon Oil EF LLCthrough Apr 2026
Latest permitMarathon Oil EF LLCApr 18, 2024
22,000
total depth, ft
1
permits on file
Apr 18, 2024
last permit issued
Jan 19, 2026
completed
0
cumulative oil, bbl
1.43M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Feb 2025 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Jan 19, 2026
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active

Surface location

28.777119, -97.912517

OpenStreetMap → ·  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 →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Patino Unit G-2-299805Sugarkane (Austin Chalk)Marathon Oil EF LLC101.43MFeb 2025 – Jul 2026

Gas, mcf lease total

Last 12 months 1,055,632 · prior 12 370,638(+185%)

0100K200K202420252026

Chain of custody

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

  1. 1Marathon Oil EF LLCFeb 2025 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
898899-99DrillMarathon Oil EF LLCApr 16, 2024Apr 18, 2024Sep 9, 202422,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-2-299805————

Formation tops

As filed on W-2/G-1. Subsea from 402 ft elevation.Download CSV →

FormationMD ftSubsea
Queen City4,270-3,868
Reklaw4,796-4,394
Carrizo5,631-5,229
WilcoxWILCOX - DISPOSAL5,710-5,308
Austin ChalkAUSTIN CHALK - H2S12,650-12,248
Eagle FordEAGLE FORD - H2S——
EdwardsEDWARDS - H2S——
FrioFRIO - DISPOSAL——
SligoSLIGO - H2S——
YeguaYEGUA - DISPOSAL——

Perforations

Perforated and open-hole intervals.

FromToType
13,04519,798Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6255,81012.251,595 S
5.519,7988.753,465 S
5.524,3368.753,185 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Mar 18, 2026Mar 16, 2026—
00Aug 29, 2025Mar 13, 2025Yes

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.

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 neighbours, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Patino Unit42-255-38060

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

Queen City4,270-3,867
Reklaw4,796-4,393
Carrizo5,631-5,228
Wilcox5,710-5,307
Austin Chalk12,631-12,228
Eagle Ford12,722-12,319
Edwards—
Frio—

10 TOPS · FIRST 8

Patino-Franke Unit SA142-255-38059

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

Queen City2,304-1,901
Reklaw4,796-4,393
Carrizo5,631-5,228
Wilcox5,710-5,307
Austin Chalk12,666-12,263
Eagle Ford12,723-12,320
Sligo—
Frio—

10 TOPS · FIRST 8

Franke-Foster-Patino SA1042-255-37084

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

Yegua2,230-1,795
Queen City4,420-3,985
Reklaw4,820-4,385
Carrizo5,600-5,165
Wilcox5,610-5,175
Austin Chalk12,561-12,126
Eagle Ford12,664-12,229
Frio—

10 TOPS · FIRST 8

Franke-Foster-Patino SA1142-255-37085

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

Yegua2,230-1,865
Queen City4,420-4,055
Reklaw4,820-4,455
Carrizo5,600-5,235
Wilcox5,610-5,245
Austin Chalk12,575-12,210
Eagle Ford12,672-12,307
Sligo—

10 TOPS · FIRST 8

Murphy-Franke-Foster SA42-255-37086

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

Yegua2,230-1,866
Queen City4,420-4,056
Reklaw4,820-4,456
Carrizo5,600-5,236
Wilcox5,610-5,246
Austin Chalk12,543-12,179
Eagle Ford12,651-12,287
Sligo—

10 TOPS · FIRST 8

Graef Gas Unit 142-255-35989

2.1 KM · Statoil Texas Onshore Prop LLC · Section with this well →

Yegua2,464-2,055
Queen City4,431-4,022
Reklaw5,596-5,187
Carrizo5,623-5,214
Wilcox5,712-5,303
Eagle Ford12,732-12,323
Austin Chalk13,631-13,222
Frio—

10 TOPS · FIRST 8

Graef Gas Unit 142-255-35990

2.1 KM · Statoil Texas Onshore Prop LLC · Section with this well →

Yegua2,466-2,057
Queen City4,442-4,033
Reklaw5,610-5,201
Carrizo5,645-5,236
Wilcox5,745-5,336
Austin Chalk12,632-12,223
Eagle Ford12,729-12,320
Sligo—

10 TOPS · FIRST 8

Graef Gas Unit 142-255-35991

2.1 KM · Statoil Texas Onshore Prop LLC · Section with this well →

Yegua2,437-2,028
Queen City4,450-4,041
Reklaw5,614-5,205
Carrizo5,645-5,236
Wilcox5,750-5,341
Austin Chalk12,637-12,228
Eagle Ford12,734-12,325
Sligo—

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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