WELL · 42-013-35599 · DISTRICT 1

W. Smith B-a-MCS Psa #1H

Y

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

W. Smith B-A-Mcs Psa #1H (API 42-013-35599) is a horizontal well in Atascosa County operated by Marathon Oil EF LLC, completed June 9, 2022 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued July 30, 2018, permitted to 20,000 ft.

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

Its lease has reported 295K barrels of oil and 378K mcf of gas since December 2018, 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 LLCJul 30, 2018
20,000
total depth, ft
1
permits on file
Jul 30, 2018
last permit issued
Jun 9, 2022
completed
295K
cumulative oil, bbl
378K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Dec 2018 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Jun 9, 2022
Shut in
—
Plugged
—

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

Surface location

28.733050, -98.215642

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 lease this well is completed on; this well is the only one on it.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
W. Smith B-a-MCS Psa O-1-19558Eagleville (Eagle Ford-1)Marathon Oil EF LLC1295K378KDec 2018 – Jul 2026

Oil, barrels lease total

Last 12 months 8,078 · prior 12 18,401(-56%)

01K2K3K202420252026

Gas, mcf lease total

Last 12 months 9,713 · prior 12 18,854(-48%)

02K4K202420252026

Chain of custody

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

  1. 1Marathon Oil EF LLCFeb 2019 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
842147-99DrillMarathon Oil EF LLCJul 10, 2018Jul 30, 2018Jan 21, 201920,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-1-19558————

Formation tops

As filed on W-2/G-1. Subsea from 323 ft elevation.Download CSV →

FormationMD ftSubsea
Queen City2,815-2,492
Reklaw3,130-2,807
Bartosh3,412-3,089
Carrizo3,790-3,467
WilcoxWILCOX - DISPOSAL6,344-6,021
NavarroNAVARRO - H2S8,296-7,973
OlmosOLMOS - DISPOSAL8,866-8,543
AnacachoANACACHO - H2S10,343-10,020
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,541-10,218
EscondidoESCONDIDO - H2S, DISPOSAL——
NavarroNAVARRO - H2S——

Perforations

Perforated and open-hole intervals.

FromToType
11,04218,903Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6255,22112.251,540 S
5.519,0108.753,515 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 19, 2025Jan 9, 2025—
00Sep 8, 2022Aug 18, 2022—
00May 1, 2019Mar 6, 2019Yes
00Mar 7, 2019Feb 4, 2019Yes

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 →

Henke-Wilhelm Unit A42-013-35505

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

Queen City2,815-2,492
Reklaw3,130-2,807
Bartosh3,412-3,089
Carrizo3,790-3,467
Wilcox6,344-6,021
Navarro8,296-7,973
Olmos8,866-8,543
Anacacho10,326-10,003

10 TOPS · FIRST 8

Henke-Wilhelm Unit A42-013-35506

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

Queen City2,815-2,492
Reklaw3,130-2,807
Bartosh3,412-3,089
Carrizo3,790-3,467
Wilcox6,344-6,021
Navarro8,296-7,973
Olmos8,866-8,543
Anacacho10,325-10,002

10 TOPS · FIRST 8

Henke-Wilhelm Unit A42-013-35507

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

Queen City2,815-2,492
Reklaw3,130-2,807
Bartosh3,412-3,089
Carrizo3,790-3,467
Wilcox6,344-6,021
Navarro8,296-7,973
Olmos8,866-8,543
Anacacho10,323-10,000

10 TOPS · FIRST 8

Wilhelm-Smith Unit B42-013-35516

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

Queen City2,865-2,565
Reklaw3,179-2,879
Bartosh3,462-3,162
Carrizo3,840-3,540
Wilcox5,215-4,915
Navarro8,346-8,046
Olmos8,916-8,616
Anacacho10,386-10,086

10 TOPS · FIRST 8

Wilhelm-Smith Unit B42-013-35515

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

Queen City2,865-2,565
Reklaw3,179-2,879
Carrizo3,840-3,540
Wilcox5,215-4,915
Navarro8,346-8,046
Olmos8,916-8,616
Anacacho10,419-10,119
Austin Chalk10,615-10,315

10 TOPS · FIRST 8

Wilhelm-Smith Unit B42-013-35514

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

Queen City2,865-2,565
Reklaw3,179-2,879
Carrizo3,840-3,540
Wilcox5,215-4,915
Navarro8,346-8,046
Olmos8,916-8,616
Anacacho10,417-10,117
Austin Chalk10,607-10,307

10 TOPS · FIRST 8

Giese Unit42-013-35592

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

Queen City2,762-2,429
Reklaw3,076-2,743
Bartosh3,359-3,026
Carrizo3,737-3,404
Wilcox5,112-4,779
Navarro8,243-7,910
Olmos8,813-8,480
Anacacho10,334-10,001

10 TOPS · FIRST 8

Giese Unit42-013-35593

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

Queen City2,762-2,430
Reklaw3,076-2,744
Bartosh3,359-3,027
Carrizo3,737-3,405
Wilcox5,112-4,780
Navarro8,243-7,911
Olmos8,813-8,481
Anacacho10,325-9,993

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.

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