WELL · 42-321-00085 · DISTRICT 3
Ohio-Sun Unit #20J
Matagorda County · Markham N.-Bay City N (7685) field · Vertical
Ohio-Sun Unit #20J (API 42-321-00085) is a well in Matagorda County operated by Allegiant Resources LLC, completed December 12, 1983.
The RRC has issued 3 drilling permits between 1983 and 1985, permitted to 9,000 ft.
It was permitted by Marathon Oil Company and has since transferred to Allegiant Resources LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Miocene (undifferentiated), Anahuac, Frio.
Its lease has reported 223K barrels of oil and 362K mcf of gas since January 1993, last reporting in July 2026. The lease carries 21 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit.
Operator of record
Permitted by Marathon Oil Company; the EWA schedule now lists a different operator.
- Based in
- Lafayette, LA
- P-5 status
- Active (A)
- P-5 last filed
- Jul 22, 2025
- Permits on file
- 46
- Phone
- (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 | Marathon Oil CompanyOct 11, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,000
- total depth, ft
- 3
- permits on file
- Oct 11, 1985
- last permit issued
- Dec 12, 1983
- completed
- 223K
- cumulative oil, bbl
- 362K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 12, 1983
- 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 lease this well is completed on; they carry 21 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ohio-Sun Unit O-3-2996 | Markham N.-Bay City, N (Carlson) | Allegiant Resources, LLC | 21 | 223K | 362K | Jan 1993 – Jul 2026 |
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 |
|---|---|---|---|---|---|---|
| 287457-99 | Recompletion | Marathon Oil Company | Oct 10, 1985 | Oct 11, 1985 | — | 9,000 |
| 254202-99 | Recompletion | Marathon Oil Company | Oct 11, 1984 | Oct 11, 1984 | — | 9,000 |
| 212966-99 | Recompletion | Marathon Oil Company | Aug 31, 1983 | Sep 15, 1983 | — | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-2996 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 65 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 2,000 | -1,935 |
| Miocene (undifferentiated)MIOCENE | 2,500 | -2,435 |
| Anahuac | 5,500 | -5,435 |
| Frio | 6,500 | -6,435 |
| Frio | 6,550 | -6,485 |
| Frio | 6,900 | -6,835 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,160 | 2,168 | Perforated |
| 2,212 | 2,220 | Perforated |
| 2,480 | 2,540 | Perforated |
| 3,542 | 3,582 | Perforated |
| 3,590 | 3,615 | Perforated |
| 6,982 | 6,990 | Perforated |
| 7,000 | — | Perforated |
| 7,672 | 7,678 | Perforated |
| 7,794 | 7,804 | Perforated |
| 8,168 | 8,198 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,003 | 15 | 1,085 S |
| 2.375 | 7,669 | — | — |
| 7 | 8,482 | 9.625 | 700 S |
| 7 | 8,526 | 9.625 | 700 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 →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Aug 25, 2004 | Jun 17, 2004 | — |
| 00 | Jul 28, 1993 | Jul 8, 1993 | — |
| 00 | Jul 13, 1987 | Jun 26, 1987 | Yes |
| 00 | Dec 27, 1985 | Dec 5, 1985 | Yes |
| 00 | Dec 18, 1985 | — | — |
| 00 | Jan 14, 1985 | Nov 14, 1984 | — |
| 00 | Dec 4, 1984 | — | — |
| 00 | Feb 2, 1984 | Jan 3, 1984 | — |
| 00 | Feb 1, 1984 | Jan 3, 1984 | — |
| 00 | Jan 12, 1984 | Jun 9, 1976 | — |
| 00 | Jan 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.
- Wellbore filings for 42-321-00085 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-00085 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 24.3M
- bbl, all reported
- Jun 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000059199 | W-14 Disposal | Active | 15,000 | 750 | 2,100–2,870 |
| 000077718 | W-14 Disposal | Canceled Mar 29, 1993 | 15,000 | 750 | 2,100–2,870 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
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/32100085, documented in the API reference.