WELL · 42-321-00064 · DISTRICT 3
Ohio-Sun Unit #31 A
Matagorda County · Markham N.-Bay City N(cornelius) field · Vertical
Ohio-Sun Unit #31 A (API 42-321-00064) is a well in Matagorda County operated by Allegiant Resources LLC, completed August 20, 1982.
The RRC has issued 5 drilling permits between 1981 and 2005, permitted to 8,300 ft.
It was permitted by Comstock Oil & Gas, LP and has since transferred to Allegiant Resources LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Miocene (undifferentiated), Annuhual, Frio, Cayce.
Its 3 leases have reported 223K barrels of oil and 442K mcf of gas since January 1993, last reporting in July 2026. The leases carry 23 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Comstock Oil & Gas, LP; 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 schedule | Allegiant Resources LLC |
| Production reports | Allegiant Resources, LLCthrough Jan 2025 |
| Latest permit | Comstock Oil & Gas, LPMar 24, 2005 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,300
- total depth, ft
- 5
- permits on file
- Mar 24, 2005
- last permit issued
- Aug 20, 1982
- completed
- 223K
- cumulative oil, bbl
- 442K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 20, 1982
- 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 3 leases this well is completed on; they carry 23 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ohio-Sun Unit G-3-208564 | Markham N.-Bay City, N (Cayce) | Allegiant Resources, LLC | 1 | 0 | 73.1K | Apr 2005 – Jul 2026 |
| Ohio-Sun Unit O-3-2996 | Markham N.-Bay City, N (Carlson) | Allegiant Resources, LLC | 21 | 223K | 362K | Jan 1993 – Jul 2026 |
| Ohio-Sun Unit G-3-205763 | Markham N.-Bay CITY,N(MARK.7900) | Comstock Oil & Gas, LP | 1 | 0 | 7.64K | Dec 2004 – Mar 2005 |
Oil, barrels lease total
Last 12 months 0 · prior 12 203(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil CompanyJan 1993 → Nov 2002
- 2Comstock Oil & Gas, Inc.Dec 2002 → Oct 2004
- 3Comstock Oil & Gas, LPNov 2004 → Aug 2008
- 4Remora Management, LLCNov 2016 → Jul 2019
- 5Allegiant Resources, LLCAug 2019 → Jan 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 559412-99 | Recompletion | Comstock Oil & Gas, LP | Mar 23, 2005 | Mar 24, 2005 | — | 7,825 |
| 552303-99 | Recompletion | Comstock Oil & Gas, Inc. | Oct 14, 2004 | Oct 14, 2004 | — | 8,300 |
| 176799-99 | Recompletion | Marathon Oil Company | Nov 2, 1982 | Nov 2, 1982 | — | 8,300 |
| 166804-99 | Recompletion | Marathon Oil Company | Jul 21, 1982 | Jul 21, 1982 | — | 8,300 |
| 131904-99 | Recompletion | Marathon Oil Company | Aug 6, 1981 | Aug 6, 1981 | — | 8,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-205763 | — | — | — | — |
| — | — G-3-208564 | — | — | — | — |
| — | — O-3-2996 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 75 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 2,100 | -2,025 |
| Annuhual | 5,500 | -5,425 |
| Frio | 6,500 | -6,425 |
| Cayce | 7,750 | -7,675 |
| Markham | 7,856 | -7,781 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,994 | 6,970 | Perforated |
| 7,345 | 7,662 | Perforated |
| 7,677 | 7,800 | Perforated |
| 7,750 | 7,755 | Perforated |
| 7,778 | 7,782 | Perforated |
| 7,856 | 7,858 | Perforated |
| 7,864 | 7,866 | Perforated |
| 7,869 | 7,880 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,053 | — | — |
| 10.75 | 2,057 | 15 | 1,150 S |
| 2.375 | 6,693 | — | — |
| 2.375 | 7,576 | — | — |
| 2.375 | 7,615 | — | — |
| 2.375 | 7,808 | — | — |
| 7 | 8,314 | 9.875 | 1,000 S |
| 7 | 8,354 | — | — |
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 →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jan 4, 2019 | Oct 31, 2018 | — |
| 00 | Aug 10, 2005 | Apr 19, 2005 | Yes |
| 00 | Jun 9, 2005 | — | — |
| 00 | Apr 19, 2005 | Dec 29, 2004 | Yes |
| 00 | Jan 28, 2005 | — | — |
| 00 | Jan 12, 1984 | Jan 10, 1983 | — |
| 00 | Jan 12, 1984 | Mar 29, 1982 | — |
| 00 | Jan 12, 1984 | Dec 14, 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.
- Wellbore filings for 42-321-00064 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-00064 → scanned completion filings
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/32100064, documented in the API reference.