WELL · 42-255-38153 · DISTRICT 2

Davis-Mensik SA1 #1H

Y

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

Davis-Mensik Sa1 #1H (API 42-255-38153) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed April 14, 2025 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued November 20, 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

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 scheduleMarathon Oil EF LLC
Production reportsMarathon Oil EF LLCthrough Apr 2026
Latest permitMarathon Oil EF LLCNov 20, 2024
22,000
total depth, ft
1
permits on file
Nov 20, 2024
last permit issued
Apr 14, 2025
completed
0
cumulative oil, bbl
1.6M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Apr 2025 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Apr 14, 2025
Shut in
—
Plugged
—

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

Surface location

28.863888, -97.835171

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
Davis-Mensik SA1 G-2-300819Sugarkane (Eagle Ford)Marathon Oil EF LLC101.6MApr 2025 – Jul 2026

Gas, mcf lease total

Last 12 months 1,560,671 · prior 12 38,855(+3917%)

0100K200K202420252026

Chain of custody

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

  1. 1Marathon Oil EF LLCApr 2025 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
902919-99DrillMarathon Oil EF LLCSep 26, 2024Nov 20, 2024Jan 11, 202522,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-2-300819————

Formation tops

As filed on W-2/G-1. Subsea from 327 ft elevation.Download CSV →

FormationMD ftSubsea
Queen City5,181-4,854
Reklaw5,635-5,308
Carrizo5,877-5,550
WilcoxWILCOX - DISPOSAL5,977-5,650
Austin ChalkAUSTIN CHALK - H2S12,775-12,448
Eagle FordEAGLE FORD - H2S12,922-12,595
EdwardsEDWARDS - H2S——
FrioFRIO - DISPOSAL——
SligoSLIGO - H2S——
YeguaYEGUA - DISPOSAL——

Perforations

Perforated and open-hole intervals.

FromToType
13,07423,936Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6255,90712.251,630 S
5.523,9368.754,644 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
00Jan 30, 2026Dec 18, 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 neighbors, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Davis-Alexander SA142-255-38154

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

Queen City5,181-4,853
Reklaw5,635-5,307
Carrizo5,877-5,549
Wilcox5,977-5,649
Austin Chalk12,575-12,247
Eagle Ford12,922-12,594
Edwards—
Yegua—

10 TOPS · FIRST 8

Davis Unit42-255-31724

0.6 KM · Burlington Resources O & G Co LP · Section with this well →

Pecan Gap12,412-12,381
Austin Chalk12,596-12,565
Eagle Ford12,735-12,704

Alexander 01 AC42-255-37268

1.2 KM · Ensign Operating LLC · Section with this well →

Yegua2,796-2,428
Queen City5,228-4,860
Reklaw5,550-5,182
Carrizo6,080-5,712
Wilcox7,554-7,186
Austin Chalk12,625-12,257
Sligo—
Eagle Ford—

10 TOPS · FIRST 8

Alexander 01 AC42-255-37269

1.2 KM · Ensign Operating LLC · Section with this well →

Yegua2,802-2,432
Queen City5,228-4,858
Reklaw5,560-5,190
Carrizo6,084-5,714
Wilcox7,572-7,202
Austin Chalk12,608-12,238
Eagle Ford—
Edwards—

10 TOPS · FIRST 8

Wessendorff a Unit42-255-35340

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

Yegua2,559-2,207
Queen City4,844-4,492
Reklaw5,160-4,808
Wilcox6,168-5,816
Carrizo6,168-5,816
Austin Chalk12,632-12,280
Eagle Ford12,841-12,489
Sligo—

10 TOPS · FIRST 8

Wessendorff a Unit42-255-35342

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

Yegua2,570-2,218
Queen City4,866-4,514
Reklaw5,184-4,832
Carrizo6,161-5,809
Wilcox6,197-5,845
Austin Chalk12,699-12,347
Eagle Ford12,854-12,502
Edwards—

10 TOPS · FIRST 8

Wessendorff a Unit42-255-36082

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

Yegua2,616-2,262
Queen City4,912-4,558
Reklaw5,237-4,883
Carrizo5,615-5,261
Wilcox7,442-7,088
Austin Chalk12,710-12,356
Eagle Ford12,889-12,535
Edwards—

10 TOPS · FIRST 8

Wessendorff a Unit42-255-36081

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

Yegua2,615-2,261
Queen City4,910-4,556
Reklaw5,236-4,882
Carrizo5,753-5,399
Wilcox7,716-7,362
Austin Chalk12,727-12,373
Eagle Ford12,885-12,531
Frio—

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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