Petrora

WELL · 42-321-00089 · DISTRICT 3

Ohio-Sun Unit #12J

N

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

Ohio-Sun Unit #12J (API 42-321-00089) is a permitted well in Matagorda County filed by Premier Natural Resources, LLC; no completion report is on file yet.

The RRC has issued 4 drilling permits between 1984 and 2009, permitted to 8,476 ft.

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

Completion filings report 9 formation tops, including Miocene (undifferentiated), Anahuac, Frio, League.

Its 4 leases have reported 873K barrels of oil and 595K mcf of gas since January 1993, last reporting in July 2026. The leases carry 38 wells, so these are lease totals, not this well alone.

Operator of record

Allegiant Resources LLC

Permitted by Premier Natural Resources, LLC; the EWA schedule now lists a different operator.

Lafayette, LA · P-5 Y, filed May 4, 2026 · 46 permits on file · (337) 769-0032

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleAllegiant Resources LLC
Production reportsAllegiant Resources, LLCthrough Apr 2026
Latest permitPremier Natural Resources, LLCNov 5, 2009

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

8,476
total depth, ft
4
permits on file
Nov 5, 2009
last permit issued
—
completed
873K
cumulative oil, bbl
595K
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 4 leases this well is completed on; they carry 38 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Ohio-Sun Unit G-3-208204Markham N.-Bay City, N (Cayce)Allegiant Resources, LLC100Mar 2005 – Jul 2026
Ohio-Sun Unit O-3-2997Markham N.-Bay City, N (Cayce)Allegiant Resources, LLC27752K455KJan 1993 – Jul 2026
Ohio-Sun Unit O-3-11585Markham,n.-Bay City,n (7685)Allegiant Resources, LLC9120K139KJan 1993 – Jul 2026
Ohio-Sun Unit G-3-207866Markham N.-Bay City, N (Braman)Comstock Oil & Gas, LP100Jan 2005 – Mar 2005

Oil, barrels lease total

Last 12 months 3,103 · prior 12 2,228(+39%)

05001K1.5K202420252026

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, LLCOct 2016 → Jul 2019
  6. 6Allegiant Resources, LLCAug 2019 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
686411-99RecompletionPremier Natural Resources, LLCOct 21, 2009Nov 5, 2009Nov 24, 20097,980
558949-99RecompletionComstock Oil & Gas, LPMar 14, 2005Mar 15, 2005—7,980
555776-99RecompletionComstock Oil & Gas, LPJan 6, 2005Jan 7, 2005Jan 10, 20058,300
239572-99RecompletionMarathon Oil CompanyMay 21, 1984May 21, 1984—8,476

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-3-207866————
—— G-3-208204————
—— O-3-2997————
—— O-3-11585————

Formation tops

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

FormationMD ftSubsea
Miocene (undifferentiated)MIOCENE158
Anahuac5,500-5,441
Frio6,590-6,531
League7,406-7,347
Cornelius7,676-7,617
Cayce7,777-7,718
Markham7,859-7,800
Braman7,981-7,922
Betts8,182-8,123

Perforations

Perforated and open-hole intervals.

FromToType
7,6607,672Perforated
7,7807,784Perforated
7,7917,794Perforated
8,0578,067Perforated
8,3768,378Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.37578—75 S
13.375781775 sx
9.6251,521—425 S
9.6251,532——
9.6251,54712.25425 sx
27,582——
28,322——
5.58,464—400 S
5.58,4758.625400 sx

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 3, 2011May 20, 2010Yes
00Apr 13, 2011——
00Jul 21, 2005Apr 13, 2005Yes
00Jul 12, 2005Mar 14, 2005Yes
00May 13, 2005——
00Apr 29, 2005——
00Aug 9, 1984Jun 26, 1984—
00Jul 11, 1984Jun 26, 1984—
00Jan 12, 1984Dec 11, 1964—

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/32100089, documented in the API reference.