WELL · 42-255-36124 · DISTRICT 2

Smolik 01 #04H

Y

Karnes County · Sugarkane (Eagle Ford) field · Producing  · Horizontal

Smolik 01 #04H (API 42-255-36124) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed February 19, 2021 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit (amended once), issued September 30, 2018, permitted to 21,000 ft.

It was permitted by Pioneer Natural Res. USA, Inc. and has since transferred to Marathon Oil EF LLC on the wellbore schedule.

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

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

Operator of record

Marathon Oil EF LLC

Permitted by Pioneer Natural Res. USA, Inc.; the EWA schedule now lists a different operator.

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 permitPioneer Natural Res. USA, Inc.Dec 31, 2018

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

21,000
total depth, ft
2
permits on file
Dec 31, 2018
last permit issued
Feb 19, 2021
completed
0
cumulative oil, bbl
1.29M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · May 2020 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Feb 19, 2021
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active

Surface location

28.829466, -97.826117

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
Smolik 01 G-2-289996Sugarkane (Eagle Ford)Marathon Oil EF LLC101.29MMay 2020 – Jul 2026

Gas, mcf lease total

Last 12 months 69,535 · prior 12 92,306(-25%)

05K10K15K202420252026

Chain of custody

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

  1. 1Ensign Operating LLCFeb 2021 → Feb 2023
  2. 2Marathon Oil EF LLCMar 2023 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
844190-99DrillPioneer Natural Res. USA, Inc.Aug 30, 2018Dec 31, 2018Mar 31, 202021,000
844190-98DrillEnsign Operating LLCSep 25, 2020Sep 30, 2018Mar 31, 202021,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-2-289996————

Formation tops

As filed on W-2/G-1. Subsea from 252 ft elevation.Download CSV →

FormationMD ftSubsea
YeguaYEGUA - DISPOSAL2,575-2,323
Queen City4,903-4,651
Reklaw5,194-4,942
Carrizo5,816-5,564
WilcoxWILCOX - DISPOSAL5,816-5,564
Austin ChalkAUSTIN CHALK - H2S12,593-12,341
Eagle FordEAGLE FORD - H2S12,789-12,537
EdwardsEDWARDS - H2S——
FrioFRIO - DISPOSAL——
SligoSLIGO - H2S——

Perforations

Perforated and open-hole intervals.

FromToType
13,14718,842Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6254,02312.251,522 S
5.518,9808.754,223 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
00May 7, 2021Apr 9, 2021Yes
00Oct 12, 2020Sep 28, 2020Yes

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 →

Smolik 0142-255-36127

0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Yegua2,575-2,322
Queen City4,920-4,667
Reklaw5,201-4,948
Wilcox5,805-5,552
Carrizo5,805-5,552
Austin Chalk12,720-12,467
Eagle Ford12,827-12,574
Edwards—

10 TOPS · FIRST 8

Smolik 0142-255-36126

0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Yegua2,575-2,322
Queen City4,909-4,656
Reklaw5,196-4,943
Carrizo5,794-5,541
Wilcox5,794-5,541
Austin Chalk12,721-12,468
Eagle Ford12,834-12,581
Frio—

10 TOPS · FIRST 8

Smolik 0142-255-36125

0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Yegua2,575-2,323
Queen City4,910-4,658
Reklaw5,189-4,937
Carrizo5,813-5,561
Wilcox5,813-5,561
Austin Chalk12,705-12,453
Eagle Ford12,807-12,555
Frio—

10 TOPS · FIRST 8

Escondido CRK-Evang (SA) B342-255-38230

1.3 KM · Repsol Oil & Gas USA, LLC · Section with this well →

Queen City4,708-4,421
Reklaw5,719-5,432
Wilcox5,963-5,676
Austin Chalk13,005-12,718
Eagle Ford13,093-12,806
Carrizo—
Yegua—
Sligo—

10 TOPS · FIRST 8

Escondido CRK-Evang (SA) B442-255-38231

1.3 KM · Repsol Oil & Gas USA, LLC · Section with this well →

Queen City4,701-4,414
Reklaw5,762-5,475
Wilcox5,971-5,684
Austin Chalk13,079-12,792
Eagle Ford13,166-12,879
Yegua—
Carrizo—
Edwards—

10 TOPS · FIRST 8

Escondido Creek Gas Unit 142-255-36330

1.4 KM · Equinor Texas Onshore Prop LLC · Section with this well →

Frio1,225-965
Yegua2,737-2,477
Queen City4,693-4,433
Reklaw5,479-5,219
Austin Chalk13,024-12,764
Eagle Ford13,114-12,854
Carrizo—
Edwards—

10 TOPS · FIRST 8

Escondido CRK-Evangeline (SA) B242-255-36367

1.4 KM · Equinor Texas Onshore Prop LLC · Section with this well →

Frio1,208-948
Yegua2,724-2,464
Queen City4,673-4,413
Reklaw5,749-5,489
Carrizo5,951-5,691
Wilcox6,069-5,809
Austin Chalk13,030-12,770
Eagle Ford13,124-12,864

10 TOPS · FIRST 8

Escondido Creek Gas Unit 142-255-36368

1.4 KM · Equinor Texas Onshore Prop LLC · Section with this well →

Frio1,300-1,040
Yegua2,711-2,451
Queen City4,689-4,429
Reklaw5,741-5,481
Carrizo5,974-5,714
Wilcox6,121-5,861
Austin Chalk13,025-12,765
Eagle Ford13,127-12,867

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/25536124, documented in the API reference.