TEXAS · WELLS · MATAGORDA COUNTY · API 42-321-31220 · DISTRICT 03
Ohio-Sun Unit #9K
Matagorda County · Markham N.-Bay City N(cornelius) field · Shut In · Vertical
Ohio-Sun Unit #9K (API 42-321-31220) is a well in Matagorda County operated by Goldking Minerals Mgmt L.L.C., completed September 13, 2008 and listed as shut in on the RRC schedule, shut in March 1, 2019.
The RRC has issued 3 drilling permits between 1982 and 1992, permitted to 8,550 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 3 leases have reported 1.17M barrels of oil and 1.47M mcf of gas since January 1993, last reporting volume in April 2026. The leases carry 78 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 | Goldking Minerals Mgmt L.L.C. |
| Production reports | Allegiant Resources, LLCthrough Apr 2026 |
| Latest permit | Marathon Oil CompanyApr 23, 1992 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,550
- total depth, ft
- 3
- permits on file
- Apr 23, 1992
- last permit issued
- Sep 13, 2008
- completed
- 1.17M
- cumulative oil, bbl
- 1.47M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 13, 2008
- Shut in
- Mar 1, 2019
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 78 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ohio-Sun Unit O-3-2998 | Markham N.-Bay City,n(cornelius) | Allegiant Resources, LLC | 53 | 1.05M | 1.25M | Jan 1993 – Apr 2026 |
| Ohio-Sun Unit O-3-2999 | Markham N.-Bay City,n (McDonald) | Allegiant Resources, LLC | 13 | 69.8K | 107K | Jan 1993 – Apr 2026 |
| Ohio-Sun Unit O-3-12601 | Markham N.-Bay City, N (Betts) | Allegiant Resources, LLC | 12 | 58.3K | 116K | Jan 1993 – Jun 2022 |
Oil, barrels lease total
Last 12 months 15,646 · prior 12 19,514(-20%)
Gas, mcf lease total
Last 12 months 14,497 · prior 12 19,275(-25%)
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 → Sep 2015
- 5Remora Management, LLCOct 2015 → Jul 2019
- 6Allegiant Resources, LLCAug 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 398651-99 | Recompletion | Marathon Oil Company | Apr 23, 1992 | Apr 23, 1992 | Apr 28, 1992 | 8,550 |
| 372001-99 | Recompletion | Marathon Oil Company | Apr 9, 1990 | Apr 11, 1990 | — | 8,550 |
| 149389-99 | Drill | Marathon Oil Company | Jan 27, 1982 | Jan 27, 1982 | Feb 6, 1982 | 8,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Sep 13, 2008 | Ohio-Sun Unit O-3-2998 | Markham N.-Bay City N(cornelius) | Goldking Minerals Mgmt L.L.C. | Shut In · shut in Mar 1, 2019 | 8,550 |
| Apr 19, 1990 | Ohio-Sun Unit O-3-12601 | Markham N.-Bay City N (Betts) | Goldking Minerals Mgmt L.L.C. | Not on Schedule | — |
| Mar 15, 1982 | Ohio-Sun Unit O-3-2999 | Markham N.-Bay City N (McDonald) | Goldking Minerals Mgmt L.L.C. | Not on Schedule | — |
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 | 6,500 | -6,443 |
| FrioFRIO (UPPER) | 6,500 | -6,443 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,417 | 1,926 | Perforated |
| 7,756 | 7,765 | Perforated |
| 7,857 | 7,860 | Perforated |
| 7,857 | 7,861 | Perforated |
| 7,917 | 7,926 | Perforated |
| 8,194 | 8,205 | Perforated |
| 8,345 | 8,357 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 2,650 | 12.25 | 965 S |
| — | 2,650 | — | 300 S |
| 2.875 | 8,263 | — | — |
| 5.5 | 8,550 | 7.875 | 755 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Feb 2, 2009 | Dec 9, 2008 | — |
| 00 | Jun 6, 2000 | Apr 27, 2000 | — |
| 00 | Oct 18, 1999 | Sep 30, 1999 | — |
| 00 | Jun 2, 1992 | May 19, 1992 | Yes |
| 00 | May 27, 1992 | May 3, 1990 | Yes |
| 00 | Jun 7, 1990 | May 3, 1990 | Yes |
| 00 | May 24, 1990 | — | — |
| 00 | Jan 12, 1984 | Mar 25, 1982 | — |
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 42-321-31220 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-31220 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- —
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000121755 | W-14 Disposal | Not activated | 15,000 | 500 | 2,000–5,500 |
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/32131220, documented in the API reference.