WELL · 42-255-38008 · DISTRICT 2

Brysch Adams-Brysch Jonas C SA1 #1H

Y

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

Brysch Adams-Brysch Jonas C Sa1 #1H (API 42-255-38008) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed June 19, 2024 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued March 6, 2024, permitted to 24,000 ft.

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

Its lease has reported 362K barrels of oil and 646K mcf of gas since June 2024, last reporting in July 2026.

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 LLCMar 6, 2024
24,000
total depth, ft
1
permits on file
Mar 6, 2024
last permit issued
Jun 19, 2024
completed
362K
cumulative oil, bbl
646K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jun 2024 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Jun 19, 2024
Shut in
—
Plugged
—

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

Surface location

28.840178, -97.968570

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
Brysch Adams-Brysch Jonas C SA1 O-2-12842Eagleville (Eagle Ford-2)Marathon Oil EF LLC1362K646KJun 2024 – Jul 2026

Oil, barrels lease total

Last 12 months 86,476 · prior 12 275,560(-69%)

020K40K60K202420252026

Gas, mcf lease total

Last 12 months 208,875 · prior 12 436,898(-52%)

050K100K202420252026

Chain of custody

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

  1. 1Marathon Oil EF LLCJun 2024 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
897719-99DrillMarathon Oil EF LLCFeb 26, 2024Mar 6, 2024Mar 16, 202424,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-2-12842————

Formation tops

As filed on W-2/G-1. Subsea from 382 ft elevation.Download CSV →

FormationMD ftSubsea
Queen City3,450-3,068
Carrizo3,914-3,532
Reklaw3,969-3,587
Carrizo4,914-4,532
WilcoxWILCOX - DISPOSAL5,006-4,624
Austin ChalkAUSTIN CHALK - H2S11,790-11,408
Eagle FordEAGLE FORD - H2S11,978-11,596
EdwardsEDWARDS - H2S——
FrioFRIO - DISPOSAL——
SligoSLIGO - H2S——
YeguaYEGUA - DISPOSAL——

Perforations

Perforated and open-hole intervals.

FromToType
12,69125,264Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6255,94512.251,456 S
5.2525,2478.754,853 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
00Feb 6, 2025Dec 30, 2024—
00Jan 30, 2025Jan 22, 2025—
00Nov 20, 2024Sep 25, 2024Yes

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 →

Kimble-Gilley Gilley SA42-255-38009

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

Queen City3,450-3,069
Reklaw3,969-3,588
Carrizo4,914-4,533
Wilcox5,006-4,625
Austin Chalk11,700-11,319
Eagle Ford11,901-11,520
Yegua—
Edwards—

10 TOPS · FIRST 8

Holland-Brown Unit42-255-33996

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

Yegua1,777-1,373
Queen City3,900-3,496
Reklaw4,397-3,993
Carrizo5,036-4,632
Wilcox6,350-5,946
Austin Chalk11,690-11,286
Eagle Ford11,879-11,475
Frio—

10 TOPS · FIRST 8

Holland-Brown Unit42-255-33993

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

Yegua1,777-1,373
Queen City3,900-3,496
Reklaw4,397-3,993
Carrizo5,036-4,632
Wilcox6,350-5,946
Austin Chalk11,687-11,283
Eagle Ford11,867-11,463
Frio—

10 TOPS · FIRST 8

Holland-Brown Unit42-255-33994

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

Yegua1,777-1,373
Queen City3,900-3,496
Reklaw4,397-3,993
Carrizo5,036-4,632
Wilcox6,350-5,946
Austin Chalk11,674-11,270
Eagle Ford11,857-11,453
Edwards—

10 TOPS · FIRST 8

Holland-Brown Unit42-255-33995

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

Austin Chalk1,161-757
Yegua1,917-1,513
Queen City4,314-3,910
Reklaw4,711-4,307
Carrizo5,302-4,898
Wilcox6,474-6,070
Eagle Ford11,858-11,454
Frio—

10 TOPS · FIRST 8

B. Dupnik a-H. Brown Psa42-255-35880

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

Yegua1,917-1,513
Queen City4,314-3,910
Reklaw4,711-4,307
Carrizo5,302-4,898
Wilcox6,474-6,070
Austin Chalk11,648-11,244
Eagle Ford11,833-11,429
Edwards—

10 TOPS · FIRST 8

Brown Dupnik B-a Psa42-255-35881

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

Yegua1,917-1,513
Queen City4,314-3,910
Reklaw4,711-4,307
Carrizo5,302-4,898
Wilcox6,474-6,070
Austin Chalk11,618-11,214
Eagle Ford11,804-11,400
Sligo—

10 TOPS · FIRST 8

Tipton-Jonas Unit42-255-37957

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

Queen City2,740-2,337
Reklaw4,205-3,802
Carrizo4,710-4,307
Wilcox4,815-4,412
Anacacho11,471-11,068
Austin Chalk11,589-11,186
Eagle Ford11,786-11,383
Frio—

11 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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