WELL · 42-321-01606 · DISTRICT 3
Ohio-Sun Unit #3B
Matagorda County · Markham N.-Bay City N (6700) field · Vertical
Ohio-Sun Unit #3B (API 42-321-01606) is a plugged well in Matagorda County, plugged August 20, 2009, last operated by Marathon Oil Company.
The RRC has issued 3 drilling permits between 1979 and 2000, permitted to 8,064 ft.
Completion filings report one formation top, including Cayce.
Its 3 leases have reported 752K barrels of oil and 464K mcf of gas since January 1993, last reporting in July 2026. The leases carry 29 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Delinquent (D)
- P-5 last filed
- Aug 14, 2025
- Permits on file
- 3,707
- Phone
- (281) 293-1000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil Company |
| Production reports | Allegiant Resources, LLCthrough Apr 2026 |
| Latest permit | Marathon Oil CompanyMar 8, 2000 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,064
- total depth, ft
- 3
- permits on file
- Mar 8, 2000
- last permit issued
- —
- completed
- 752K
- cumulative oil, bbl
- 464K
- 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
- Aug 20, 2009
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 29 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ohio-Sun Unit O-3-2997 | Markham N.-Bay City, N (Cayce) | Allegiant Resources, LLC | 27 | 752K | 455K | Jan 1993 – Jul 2026 |
| Ohio-Sun Unit G-3-176261 | Markham N.-Bay City, N (League) | Premier Natural Resources, LLC | 1 | 0 | 8.22K | Feb 2000 – Aug 2009 |
| Ohio-Sun Unit O-3-10563 | Markham,n.-Bay City, N (6700) | Marathon Oil Company | 1 | 0 | 0 | Jan 1993 – Mar 2008 |
Oil, barrels lease total
Last 12 months 3,103 · prior 12 2,225(+39%)
Gas, mcf lease total
Last 12 months 7 · prior 12 3,596(-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
- 4Premier Natural Resources, LLCSep 2008 → Jul 2014
- 5Remora Management, LLCMay 2017 → Jul 2019
- 6Allegiant Resources, LLCAug 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 492846-99 | Recompletion | Marathon Oil Company | Mar 8, 2000 | Mar 8, 2000 | Jan 31, 2000 | 8,064 |
| 424619-99 | Recompletion | Marathon Oil Company | Jun 7, 1994 | Jun 7, 1994 | Apr 4, 1994 | 8,064 |
| 43880-99 | Recompletion | Marathon Oil Company | Mar 7, 1979 | Mar 7, 1979 | — | 8,064 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-176261 | — | — | — | — |
| — | — O-3-2997 | — | — | — | — |
| — | — O-3-10563 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 71 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Cayce | 7,791 | -7,720 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,637 | 6,640 | Perforated |
| 6,637 | — | Perforated |
| 6,696 | — | Perforated |
| 7,377 | 7,781 | Perforated |
| 7,791 | 7,797 | Perforated |
| — | 6,700 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,547 | 80 | 15 S |
| 10.75 | 1,547 | 15 | 800 S |
| 10.75 | 1,547 | — | — |
| 2 | 6,601 | — | — |
| 2 | 6,675 | — | — |
| 5.5 | 8,058 | 11 | 978 S |
| 5.5 | 8,058 | 9.875 | 1,100 S |
| 5.5 | 8,058 | — | — |
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 | Apr 20, 2000 | Mar 6, 2000 | — |
| 00 | Mar 31, 2000 | — | — |
| 00 | Jun 29, 1994 | Jun 7, 1994 | Yes |
| 00 | Jun 14, 1994 | — | — |
| 00 | Jan 12, 1984 | Sep 18, 1980 | — |
| 00 | Jan 12, 1984 | Feb 17, 1977 | — |
| 00 | Jan 12, 1984 | Jul 18, 1975 | — |
| 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 42-321-01606 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-01606 → 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/32101606, documented in the API reference.