WELL · 42-013-35824 · DISTRICT 1

74-Atascosa SA 3 #3H

N

Atascosa County · Eagleville (Eagle Ford-1) field  · Horizontal

74-Atascosa SA 3 #3H (API 42-013-35824) is a horizontal well in Atascosa County operated by Marathon Oil EF LLC, completed October 23, 2021.

The RRC has issued one drilling permit, issued January 15, 2021, permitted to 22,000 ft.

Completion filings report 10 formation tops, including Queen City, Anacacho, Reklaw, Bartosh.

Its 2 leases have reported 262K barrels of oil and 388K mcf of gas since March 2021, last reporting in July 2026. The leases carry 5 wells, so these are lease totals, not this well alone.

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 LLCJan 15, 2021
22,000
total depth, ft
1
permits on file
Jan 15, 2021
last permit issued
Oct 23, 2021
completed
262K
cumulative oil, bbl
388K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Mar 2021 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Oct 23, 2021
Shut in
—
Plugged
—

Surface location

28.651742, -98.320517

Google Maps ↗

Permit surface location from the RRC GIS record, in Atascosa County.

Lease production

PDQ LEASE REPORTS · REPORTED THROUGH APR 2026

Texas reports oil by lease, not by well. These are the 2 leases this well is completed on; they carry 5 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
74-Atascosa Unit 1 O-1-21817Eagleville (Eagle Ford-1)Marathon Oil EF LLC49.75K14.7KOct 2025 – Jul 2026
74-Atascosa SA 3 O-1-20396Eagleville (Eagle Ford-1)Marathon Oil EF LLC1253K373KMar 2021 – Jan 2026

Oil, barrels lease total

Last 12 months 16,849 · prior 12 22,938(-27%)

02K4K202420252026

Gas, mcf lease total

Last 12 months 25,479 · prior 12 34,624(-26%)

05K10K202420252026

Chain of custody

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

  1. 1Marathon Oil EF LLCJul 2021 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
867001-99DrillMarathon Oil EF LLCJan 12, 2021Jan 15, 2021Mar 13, 202122,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-1-20396————
—— O-1-21817————

Formation tops

As filed on W-2/G-1. Subsea from 284 ft elevation.Download CSV →

FormationMD ftSubsea
Queen City581-297
AnacachoANACACHO - H2S1,016-732
Queen City2,528-2,244
Reklaw2,528-2,244
Bartosh3,159-2,875
Reklaw3,159-2,875
Carrizo3,931-3,647
WilcoxWILCOX - DISPOSAL4,019-3,735
AnacachoANACACHO - H2S10,516-10,232
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,763-10,479
Bartosh——
EscondidoESCONDIDO - H2S, DISPOSAL——
NavarroNAVARRO - H2S——
OlmosOLMOS - DISPOSAL——

Perforations

Perforated and open-hole intervals.

FromToType
11,06317,404Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6255,22312.251,622 S
5.517,4258.753,132 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
00Oct 15, 2025Sep 18, 2025—
00Oct 14, 2025Nov 24, 2021Yes
00Dec 9, 2021Nov 24, 2021Yes
00Sep 30, 2021Jul 26, 2021—
00Apr 27, 2021Apr 5, 2021Yes

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 →

74-Atascosa SA 242-013-35823

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

Queen City2,528-2,241
Reklaw3,159-2,872
Carrizo3,931-3,644
Wilcox4,019-3,732
Anacacho10,504-10,217
Austin Chalk10,757-10,470
Bartosh—
Escondido—

10 TOPS · FIRST 8

74-Atascosa SA 142-013-35821

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

Queen City2,528-2,241
Reklaw3,159-2,872
Carrizo3,931-3,644
Wilcox4,019-3,732
Anacacho10,513-10,226
Austin Chalk10,762-10,475
Navarro—
Olmos—

10 TOPS · FIRST 8

74 Ranch Unit S142-013-35763

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

Queen City1,649-1,396
Reklaw2,931-2,678
Carrizo3,848-3,595
Wilcox5,379-5,126
Anacacho10,563-10,310
Austin Chalk10,795-10,542
Eagle Ford10,902-10,649
Olmos—

11 TOPS · FIRST 8

74 Ranch Unit S142-013-35764

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

Queen City1,649-1,400
Reklaw2,925-2,676
Carrizo3,824-3,575
Wilcox5,324-5,075
Anacacho10,548-10,299
Austin Chalk10,784-10,535
Navarro—
Escondido—

10 TOPS · FIRST 8

74 Ranch Unit S142-013-35765

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

Queen City1,654-1,408
Reklaw2,929-2,683
Carrizo3,249-3,003
Wilcox3,829-3,583
Anacacho10,547-10,301
Austin Chalk10,775-10,529
Bartosh—
Navarro—

10 TOPS · FIRST 8

74 Ranch Unit S142-013-35766

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

Queen City2,936-2,693
Reklaw3,255-3,012
Carrizo3,834-3,591
Wilcox5,330-5,087
Anacacho10,548-10,305
Austin Chalk10,781-10,538
Bartosh—
Olmos—

10 TOPS · FIRST 8

74 Ranch Unit S142-013-35767

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

Queen City3,050-2,809
Reklaw3,229-2,988
Carrizo3,930-3,689
Wilcox5,434-5,193
Anacacho10,548-10,307
Austin Chalk10,782-10,541
Bartosh—
Escondido—

10 TOPS · FIRST 8

74 Ranch Unit S242-013-35875

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

Queen City2,645-2,432
Reklaw3,145-2,932
Carrizo3,705-3,492
Wilcox3,822-3,609
Anacacho10,296-10,083
Austin Chalk10,541-10,328
Escondido—
Navarro—

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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