Petrora

WELL · 42-321-00376 · DISTRICT 3

Ohio-Sun Unit #5F

N

Matagorda County · Markham N.-Bay City N. (7550) field  · Vertical

Ohio-Sun Unit #5F (API 42-321-00376) is a permitted well in Matagorda County filed by Premier Natural Resources, LLC; no completion report is on file yet.

The RRC has issued 5 drilling permits between 1977 and 2008, permitted to 8,835 ft.

It was permitted by Premier Natural Resources, LLC and has since transferred to Marathon Oil Company on the wellbore schedule.

Completion filings report 3 formation tops, including Miocen, Anahuac, Frio.

Its 5 leases have reported 752K barrels of oil and 2.04M mcf of gas since January 1993, last reporting in July 2026. The leases carry 36 wells, so these are lease totals, not this well alone.

Operator of record

Marathon Oil Company

Permitted by Premier Natural Resources, LLC; 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 reportsAllegiant Resources, LLCthrough Apr 2026
Latest permitPremier Natural Resources, LLCNov 19, 2008

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

8,835
total depth, ft
5
permits on file
Nov 19, 2008
last permit issued
—
completed
752K
cumulative oil, bbl
2.04M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
—
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 36 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Ohio Sun Unit G-3-148229Markham N.-Bay City, N (W. 1 UP)Allegiant Resources, LLC101.58MDec 1993 – Jul 2026
Ohio-Sun Unit O-3-2997Markham N.-Bay City, N (Cayce)Allegiant Resources, LLC27752K455KJan 1993 – Jul 2026
Ohio-Sun Unit O-3-10611Markham,n.-Bay City,n (7500 A)Allegiant Resources, LLC7130Jan 1993 – Jul 2026
Ohio-Sun G-3-255512Markham N.-Bay City, N (Cayce)Premier Natural Resources, LLC100Apr 2008 – Oct 2008
— G-3-69620——000—

Oil, barrels lease total

Last 12 months 3,103 · prior 12 2,225(+39%)

05001K202420252026

Gas, mcf lease total

Last 12 months 7 · prior 12 3,596(-100%)

01K2K3K202420252026

Chain of custody

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

  1. 1Marathon Oil CompanyJan 1993 → Nov 2002
  2. 2Comstock Oil & Gas, Inc.Dec 2002 → Oct 2004
  3. 3Comstock Oil & Gas, LPNov 2004 → Aug 2008
  4. 4Premier Natural Resources, LLCSep 2008 → Jul 2014
  5. 5Remora Management, LLCMay 2017 → Jul 2019
  6. 6Allegiant Resources, LLCAug 2019 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
675059-99RecompletionPremier Natural Resources, LLCNov 17, 2008Nov 19, 2008Jan 20, 20078,835
421300-99RecompletionMarathon Oil CompanyFeb 22, 1994Feb 22, 1994Nov 30, 19938,835
278891-99RecompletionMarathon Oil CompanyJun 26, 1985Jun 27, 1985—8,835
221448-99RecompletionMarathon Oil CompanyNov 21, 1983Nov 21, 1983—8,835
14591-99RecompletionMarathon Oil CompanyDec 22, 1977Dec 22, 1977—8,835

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-3-69620————
—— G-3-148229————
—— G-3-255512————
—— O-3-2997————
—— O-3-10611————

Formation tops

As filed on W-2/G-1. Subsea from 59 ft elevation.Download CSV →

FormationMD ftSubsea
Miocen2,500-2,441
Anahuac5,500-5,441
Frio6,500-6,441

Perforations

Perforated and open-hole intervals.

FromToType
7,4997,504Perforated
7,532—Perforated
7,7647,770Perforated
7,8697,877Perforated
8,5308,534Perforated
8,5368,540Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
10.752,062151,350 S
10.752,062—1,350 S
2.3757,480——
2.3757,490——
5.58,7879.8751,000 S
5.58,8347.6251,000 S
5.58,8347.8751,000 S
5.58,8349.8751,000 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 20, 2010Jul 22, 2010—
00Oct 15, 2010——
00Jul 1, 2010Dec 5, 2008Yes
00May 5, 2010——
00Apr 22, 1994Feb 22, 1994Yes
00Mar 4, 1994——
00Aug 12, 1985Jul 17, 1985—
00Aug 6, 1985——
00Jan 30, 1984Dec 13, 1983—
00Jan 12, 1984Dec 28, 1977—
00Jan 12, 1984Jan 19, 1977—
00Jan 12, 1984——

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/32100376, documented in the API reference.