Petrora

WELL · 42-409-31342 · DISTRICT 4

Mayo-Koonce GU #2

N

San Patricio County · White Point East Deep(guedin LWR field  · Vertical

Mayo-Koonce GU #2 (API 42-409-31342) is a well in San Patricio County operated by Marathon Oil Company, completed December 8, 1995.

The RRC has issued 4 drilling permits (amended once) between 1979 and 2004, permitted to 13,500 ft.

It was permitted by Peoples Energy Prod.-TX, L.P. and has since transferred to Marathon Oil Company on the wellbore schedule.

Completion filings report 6 formation tops, including Brooks, Hatch, French, U. Herron.

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

Operator of record

Marathon Oil Company

Permitted by Peoples Energy Prod.-TX, L.P.; the EWA schedule now lists a different operator.

Houston, TX · P-5 Y, filed Apr 4, 2026 · 3,707 permits on file · (800) 332-9449

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleMarathon Oil Company
Production reportsFive-Jab, Inc.through Jun 2019
Latest permitPeoples Energy Prod.-TX, L.P.Feb 18, 2004

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

13,500
total depth, ft
5
permits on file
Feb 18, 2004
last permit issued
Dec 8, 1995
completed
0
cumulative oil, bbl
4.34M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Dec 8, 1995
Shut in
—
Plugged
—

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 5 leases this well is completed on; they carry 5 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Mayo Koonce GU G-4-201058White Point East Deep(guedin LWRSouthcoast Production Inc10434KMar 2004 – Jul 2026
Mayo-Koonce GU G-4-173406White Point, E. Deep (Anderson)Peoples Energy Prod.-TX, L.P.10404KMay 1999 – Mar 2004
Mayo-Koonce GU G-4-157513White Point East Deep(guedin LWRMarathon Oil Company102.23MDec 1995 – May 1999
Mayo-Koonce Unit G-4-87110White Point, East (Koonce)Marathon Oil Company1032.5KJan 1993 – Dec 1995
Mayo-Koonce Unit G-4-87111White Point, E. (French Seg. A)Marathon Oil Company101.24MJan 1993 – Dec 1995

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

Chain of custody

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

  1. 1Marathon Oil CompanyJan 1993 → Jan 2003
  2. 2EOG Resources, Inc.Feb 2003 → Feb 2019
  3. 3Peoples Energy Prod.-TX, L.P.Feb 2004 → Sep 2007
  4. 4Coronado Energy E&P Company, LLCOct 2007 → Dec 2010
  5. 5EL Paso E & P Company, L. P.Jan 2011 → Jul 2012
  6. 6EP Energy E&P Company, L.P.Aug 2012 → Oct 2013
  7. 7Cantera Operating, LLCNov 2013 → Nov 2014
  8. 8Five-Jab, Inc.Mar 2019 → Jun 2019

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
542223-99RecompletionPeoples Energy Prod.-TX, L.P.Feb 18, 2004Feb 18, 2004Feb 25, 200410,750
485090-99RecompletionMarathon Oil CompanyJun 9, 1999Jun 10, 1999May 24, 199913,139
443554-99RecompletionMarathon Oil CompanyJan 9, 1996Jan 16, 1996Sep 18, 199513,139
51617-98Field transferMarathon Oil CompanyNov 3, 1988Jun 26, 1979—13,139
51617-99DrillMarathon Oil CompanyJun 26, 1979Jun 26, 1979Sep 6, 197913,500

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-4-87110————
—— G-4-87111————
—— G-4-157513————
—— G-4-173406————
—— G-4-201058————

Formation tops

As filed on W-2/G-1. Subsea from 49 ft elevation.Download CSV →

FormationMD ftSubsea
Brooks10,380-10,331
Hatch10,630-10,581
French10,900-10,851
U. Herron11,240-11,191
L. Herron11,460-11,411
Koonce11,810-11,761

Perforations

Perforated and open-hole intervals.

FromToType
9,2349,290Perforated
10,05010,054Perforated
10,07010,076Perforated
10,39010,402Perforated
10,63010,635Perforated
10,63010,720Perforated
10,64110,644Perforated
10,65210,670Perforated
10,67810,682Perforated
10,69710,707Perforated
10,71710,720Perforated
10,90811,004Perforated
11,82411,927Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
1636117.5575 S
1636122640 S
10.754,61414.752,265 S
2.3758,804——
7.62510,2979.6251,230 S
7.62510,3099.6252,150 S
2.37511,739——
5——612 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
00May 20, 2011Feb 17, 2011—
00Jul 1, 2004Apr 30, 2004—
00May 19, 2004——
00Jul 19, 1999Jun 9, 1999Yes
00Jul 9, 1999——
00May 30, 1996Jan 8, 1996Yes
00Apr 5, 1996——
00May 18, 1989Apr 5, 1989—
00Jan 12, 1984Apr 15, 1980Yes

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.

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/40931342, documented in the API reference.