TEXAS · WELLS · LIVE OAK COUNTY · CARROLL RETZLOFF 01 LEASE · API 42-297-35207 · DISTRICT 02

Carroll Retzloff 01 #02H

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Live Oak County · Sugarkane (Eagle Ford) field · Producing  · Horizontal

Carroll Retzloff 01 #02H (API 42-297-35207) is a horizontal well in Live Oak County operated by Marathon Oil EF LLC, completed December 26, 2012 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit (amended once), issued September 12, 2012, permitted to 13,076 ft.

It was permitted by Pioneer Natural Res. USA, Inc. and has since transferred to Marathon Oil EF LLC on the wellbore schedule.

Completion filings report 3 formation tops, including Midway, Austin Chalk, Top Egfd.

Its lease has reported 184K barrels of oil and 1.74M mcf of gas since December 2012, last reporting volume in April 2026.

Operator of record

Marathon Oil EF LLC

Permitted by Pioneer Natural Res. USA, Inc.; the EWA schedule now lists a different operator.

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 permitPioneer Natural Res. USA, Inc.Sep 12, 2012

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

13,076
total depth, ft
2
permits on file
Sep 12, 2012
last permit issued
Dec 26, 2012
completed
184K
cumulative oil, bbl
1.74M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Dec 2012 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Dec 26, 2012
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active – Extension (X)

Surface location

No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.

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
Carroll Retzloff 01 G-2-268800Sugarkane (Eagle Ford)Marathon Oil EF LLC1184K1.74MDec 2012 – Apr 2026

Gas, mcf lease total

Last 12 months 26,914 · prior 12 32,850(-18%)

010K20K30K202420252026

Chain of custody

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

  1. 1Pioneer Natural Res. USA, Inc.Dec 2012 → Sep 2019
  2. 2Ensign Operating LLCOct 2019 → Feb 2023
  3. 3Marathon Oil EF LLCMar 2023 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
747455-97DrillPioneer Natural Res. USA, Inc.Jun 28, 2013Sep 12, 2012Sep 28, 201221,000
747455-99DrillPioneer Natural Res. USA, Inc.Aug 30, 2012Sep 12, 2012Sep 28, 201221,000

Completions

CompletedLeaseFieldOperatorStatusDepth
Dec 26, 2012Carroll Retzloff 01 G-2-268800Sugarkane (Eagle Ford)Marathon Oil EF LLCProducing13,076

Formation tops

As filed on W-2/G-1. Subsea from 209 ft elevation.Download CSV →

FormationMD ftSubsea
Midway7,915-7,706
Austin ChalkAUSTIN CHALK, UPPER12,756-12,547
Top Egfd12,922-12,713

Perforations

Perforated and open-hole intervals.

FromToType
13,28018,601Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.37587617.51,000 S
9.6258,29512.251,840 S
5.518,7558.52,120 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →

SuffixRRC record dateW-2 / G-1 dateLogs referenced
00Jul 22, 2013Feb 5, 2013Yes

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 filed since 2004 open from the RRC's log search for this well; none are loaded here for it.

Find logs withinmiles of this well:List →Map →

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/29735207, documented in the API reference.