Petrora

WELL · 42-321-00137 · DISTRICT 3

Ohio-Sun Unit #1L

N

Matagorda County · Markham N.-Bay City N.(7500) field  · Vertical

Ohio-Sun Unit #1L (API 42-321-00137) is a well in Matagorda County operated by Comstock Oil & Gas Inc., completed April 7, 2001.

The RRC has issued 4 drilling permits between 1989 and 2003, permitted to 8,851 ft.

Completion filings report 7 formation tops, including Miocene (undifferentiated), Anahuac, Frio, Ross.

Its 4 leases have reported 1.05M barrels of oil and 1.84M mcf of gas since January 1993, last reporting in July 2026. The leases carry 56 wells, so these are lease totals, not this well alone.

Operator of record

Comstock Oil & Gas Inc.

Based in
Frisco, TX
P-5 status
Inactive (I)
P-5 last filed
Jan 12, 2004
Permits on file
319
Phone
(800) 877-1322

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleComstock Oil & Gas Inc.
Production reportsAllegiant Resources, LLCthrough Apr 2026
Latest permitComstock Oil & Gas, Inc.Oct 6, 2003

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

8,851
total depth, ft
4
permits on file
Oct 6, 2003
last permit issued
Apr 7, 2001
completed
1.05M
cumulative oil, bbl
1.84M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Apr 7, 2001
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 56 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Ohio-Sun Unit G-3-197487Markham N.-Bay City, N (Ross)Allegiant Resources, LLC103.81KOct 2003 – Jul 2026
Ohio-Sun Unit O-3-2998Markham N.-Bay City,n(cornelius)Allegiant Resources, LLC531.05M1.25MJan 1993 – Jul 2026
Ohio-Sun Unit G-3-173821Markham,n.-Bay CITY,N.(7500)Comstock Oil & Gas, Inc.10390KJul 1999 – Oct 2003
Ohio-Sun Unit G-3-152813Markham N.-Bay City, N (Braman)Marathon Oil Company10192KJan 1995 – Jul 1999

Oil, barrels lease total

Last 12 months 9,602 · prior 12 10,776(-11%)

05001K1.5K202420252026

Gas, mcf lease total

Last 12 months 3,577 · prior 12 6,248(-43%)

05001K1.5K202420252026

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 → Sep 2015
  5. 5Remora Management, LLCOct 2015 → Jul 2019
  6. 6Allegiant Resources, LLCAug 2019 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
537225-99RecompletionComstock Oil & Gas, Inc.Oct 6, 2003Oct 6, 2003Oct 8, 20037,500
486331-99RecompletionMarathon Oil CompanyAug 2, 1999Aug 2, 1999Jul 19, 19998,851
432222-99RecompletionMarathon Oil CompanyJan 25, 1995Jan 25, 1995Nov 14, 19948,851
360460-99RecompletionMarathon Oil CompanyJun 15, 1989Jun 22, 1989—8,851

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-3-152813————
—— G-3-173821————
—— G-3-197487————
—— O-3-2998————

Formation tops

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

FormationMD ftSubsea
Miocene (undifferentiated)MIOCENE2,500-2,441
Anahuac5,500-5,441
Frio6,500-6,441
Frio6,685-6,626
Ross6,830-6,771
Robertson7,077-7,018
Choate7,315-7,256
Camp7,557-7,498

Perforations

Perforated and open-hole intervals.

FromToType
6,8676,874Perforated
7,5537,556Perforated
7,6177,620Perforated
7,6277,634Perforated
7,7467,751Perforated
7,7637,767Perforated
8,0228,024Perforated
—7,862Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6251,65112.25500 S
5.58,8518.625500 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
00Jul 2, 2019May 1, 2019—
00Nov 18, 2003Oct 27, 2003Yes
00Nov 6, 2003——
00Oct 28, 2003Oct 6, 2003—
00Nov 20, 2001Nov 5, 2001—
00Aug 25, 1999Aug 2, 1999Yes
00Aug 13, 1999——
00Feb 28, 1995Jan 25, 1995Yes
00Feb 15, 1995——
00Jun 7, 1990May 11, 1990—
00Oct 9, 1989Aug 29, 1989Yes
00Sep 12, 1989——
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/32100137, documented in the API reference.