WELL · 42-013-35642 · DISTRICT 2

Chapman Pfeil AC Psa #1H

Y

Atascosa County · Sugarkane (Austin Chalk) field · Shut IN  · Horizontal

Chapman Pfeil AC Psa #1H (API 42-013-35642) is a horizontal well in Atascosa County operated by Marathon Oil EF LLC, completed February 8, 2019 and listed as shut in on the RRC schedule.

The RRC has issued one drilling permit, issued December 31, 2018, permitted to 20,000 ft.

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

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

Operator of record

Marathon Oil EF LLC

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 reportsnone
Latest permitMarathon Oil EF LLCDec 31, 2018
20,000
total depth, ft
1
permits on file
Dec 31, 2018
last permit issued
Feb 8, 2019
completed
0
cumulative oil, bbl
0
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Feb 2019 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Feb 8, 2019
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active

Surface location

28.807336, -98.120497

OpenStreetMap → ·  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
Chapman Pfeil AC Psa O-2-11682Sugarkane (Austin Chalk)Marathon Oil EF LLC100Feb 2019 – Jul 2026

No volumes reported on these leases in the last three years.

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
846028-99DrillMarathon Oil EF LLCOct 22, 2018Dec 31, 2018Jan 4, 201920,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-2-11682————

Formation tops

As filed on W-2/G-1. Subsea from 429 ft elevation.Download CSV →

FormationMD ftSubsea
Queen City2,860-2,431
Reklaw3,435-3,006
Bartosh3,688-3,259
Carrizo4,106-3,677
WilcoxWILCOX - DISPOSAL5,522-5,093
NavarroNAVARRO - H2S8,672-8,243
OlmosOLMOS - DISPOSAL9,059-8,630
AnacachoANACACHO - H2S10,411-9,982
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,537-10,108
EscondidoESCONDIDO - H2S, DISPOSAL——

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6255,13412.251,510 S
5.517,2508.753,226 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 28, 2019Feb 27, 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 neighbours, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Chapman-Pfeil 2H Psa42-013-35627

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

Queen City2,860-2,431
Reklaw3,435-3,006
Bartosh3,688-3,259
Carrizo4,106-3,677
Wilcox5,522-5,093
Navarro8,672-8,243
Olmos9,059-8,630
Anacacho10,440-10,011

10 TOPS · FIRST 8

Chapman-Pfeil 1H Psa42-013-35628

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

Queen City2,860-2,431
Reklaw3,435-3,006
Bartosh3,688-3,259
Carrizo4,106-3,677
Wilcox5,522-5,093
Navarro8,672-8,243
Olmos9,059-8,630
Anacacho10,446-10,017

10 TOPS · FIRST 8

Chapman-Pfeil 4H Psa42-013-35630

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

Queen City2,860-2,432
Reklaw3,435-3,007
Bartosh3,688-3,260
Carrizo4,106-3,678
Wilcox5,522-5,094
Navarro8,672-8,244
Olmos9,059-8,631
Anacacho10,440-10,012

10 TOPS · FIRST 8

C.pfeil-C.kellner-C.hummel Psa42-013-35629

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

Queen City2,860-2,432
Reklaw3,435-3,007
Bartosh3,688-3,260
Carrizo4,106-3,678
Wilcox5,522-5,094
Navarro8,672-8,244
Olmos9,059-8,631
Anacacho10,444-10,016

10 TOPS · FIRST 8

Chapman Rothe Unit42-013-35421

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

Queen City2,883-2,457
Reklaw3,458-3,032
Bartosh3,711-3,285
Carrizo4,129-3,703
Wilcox5,545-5,119
Navarro8,695-8,269
Olmos9,082-8,656
Anacacho10,427-10,001

10 TOPS · FIRST 8

Chapman Rothe Unit42-013-35420

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

Queen City2,883-2,457
Reklaw3,458-3,032
Bartosh3,711-3,285
Carrizo4,129-3,703
Wilcox5,545-5,119
Navarro8,695-8,269
Olmos9,082-8,656
Anacacho10,426-10,000

10 TOPS · FIRST 8

Chapman Rothe Unit42-013-35419

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

Queen City2,883-2,457
Reklaw3,458-3,032
Bartosh3,711-3,285
Carrizo4,129-3,703
Wilcox5,545-5,119
Navarro8,695-8,269
Olmos9,082-8,656
Anacacho10,425-9,999

10 TOPS · FIRST 8

Chapman-Hummel Unit42-255-38031

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

Queen City2,778-2,330
Reklaw3,376-2,928
Carrizo4,083-3,635
Wilcox4,202-3,754
Austin Chalk10,568-10,120
Eagle Ford10,770-10,322
Frio—
Edwards—

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/01335642, documented in the API reference.