WELL · 42-321-01616 · DISTRICT 3
Ohio-Sun Unit #7A
Matagorda County · Markham N.-Bay City N (7685) field · Vertical
Ohio-Sun Unit #7A (API 42-321-01616) is a plugged well in Matagorda County, plugged May 27, 1997, last operated by Goldking Minerals Mgmt L.L.C..
The RRC has issued 2 drilling permits between 1982 and 1986, permitted to 8,100 ft.
It was permitted by Marathon Oil Company and has since transferred to Goldking Minerals Mgmt L.L.C. on the wellbore schedule.
Completion filings report 3 formation tops, including Miocene (undifferentiated), Anahuac, Frio.
Its lease has reported 120K barrels of oil and 139K mcf of gas since January 1993, last reporting in July 2026. The lease carries 9 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Marathon Oil Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 10, 2026
- Permits on file
- 1
- Phone
- (713) 228-5464
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Allegiant Resources LLC |
| Production reports | Allegiant Resources, LLCthrough Jun 2024 |
| Latest permit | Marathon Oil CompanyOct 23, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,100
- total depth, ft
- 2
- permits on file
- Oct 23, 1986
- last permit issued
- Nov 21, 1986
- completed
- 120K
- cumulative oil, bbl
- 139K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 21, 1986
- Shut in
- —
- Plugged
- May 27, 1997
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 9 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ohio-Sun Unit O-3-11585 | Markham,n.-Bay City,n (7685) | Allegiant Resources, LLC | 9 | 120K | 139K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 0 · prior 12 3(-100%)
Gas, mcf lease total
Last 12 months 0 · prior 12 0
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 → Oct 2012
- 5Remora Management, LLCOct 2016 → Jul 2019
- 6Allegiant Resources, LLCAug 2019 → Jun 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 322158-99 | Recompletion | Marathon Oil Company | Oct 22, 1986 | Oct 23, 1986 | — | 8,100 |
| 160926-99 | Recompletion | Marathon Oil Company | May 18, 1982 | May 18, 1982 | — | 8,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 21, 1986 | Ohio-Sun Unit O-3-11585 | Markham N.-Bay City N (7685) | Goldking Minerals Mgmt L.L.C. | Plugged | — |
| Dec 1, 1982 | Ohio-Sun Unit O-3-2997 | Markham N.-Bay City N (Cayce) | Goldking Minerals Mgmt L.L.C. | Plugged | — |
| Jul 30, 1941 | Ohio-Sun Unit O-3-2996 | Markham N.-Bay City N (Carlson) | Goldking Minerals Mgmt L.L.C. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 57 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 2,500 | -2,443 |
| Anahuac | 5,500 | -5,443 |
| Frio | 6,900 | -6,843 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,942 | 6,952 | Perforated |
| 7,670 | 7,674 | Perforated |
| 7,791 | 7,796 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,572 | 15 | 800 S |
| 2.375 | 6,904 | — | — |
| 2.375 | 7,741 | — | — |
| 5.5 | 8,092 | 9.875 | 1,075 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 | Dec 31, 1986 | Dec 12, 1986 | Yes |
| 00 | Dec 20, 1986 | — | — |
| 00 | Jan 12, 1984 | Dec 30, 1982 | — |
| 00 | Jan 12, 1984 | Aug 2, 1978 | — |
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 42-321-01616 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-01616 → 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/32101616, documented in the API reference.