TEXAS · WELLS · MATAGORDA COUNTY · API 42-321-00068 · DISTRICT 03
Ohio-Sun Unit #18A
Matagorda County · Markham N.-Bay City N (Pietz) field · Shut In · Vertical
Ohio-Sun Unit #18A (API 42-321-00068) is a well in Matagorda County operated by Goldking Minerals Mgmt L.L.C., completed March 22, 2000 and listed as shut in on the RRC schedule, shut in October 1, 2008.
The RRC has issued 9 drilling permits (amended once) between 1977 and 2003, permitted to 9,009 ft.
It was permitted by Comstock Oil & Gas, Inc. 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 1.81M barrels of oil and 1.71M mcf of gas since January 1993, last reporting in July 2026. The leases carry 83 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Comstock Oil & Gas, Inc.; 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 | none |
| Production reports | Allegiant Resources, LLCthrough Apr 2026 |
| Latest permit | Comstock Oil & Gas, Inc.Jun 17, 2003 |
- 9,009
- total depth, ft
- 10
- permits on file
- Jun 17, 2003
- last permit issued
- Mar 22, 2000
- completed
- 1.81M
- cumulative oil, bbl
- 1.71M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 22, 2000
- Shut in
- Oct 1, 2008
- 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 83 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 O-3-2998 | Markham N.-Bay City,n(cornelius) | Allegiant Resources, LLC | 53 | 1.05M | 1.25M | Jan 1993 – Jul 2026 |
| Ohio-Sun Unit O-3-8049 | Markham N.-Bay City, N (Pietz) | Allegiant Resources, LLC | 3 | 6.93K | 1.85K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 12,705 · prior 12 13,001(-2%)
Gas, mcf lease total
Last 12 months 3,584 · prior 12 9,844(-64%)
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 |
|---|---|---|---|---|---|---|
| 533241-99 | Recompletion | Comstock Oil & Gas, Inc. | Jun 17, 2003 | Jun 17, 2003 | Jun 18, 2003 | 7,610 |
| 493654-99 | Recompletion | Marathon Oil Company | Mar 31, 2000 | Mar 31, 2000 | Mar 7, 2000 | 8,900 |
| 424906-99 | Recompletion | Marathon Oil Company | Jun 15, 1994 | Jun 15, 1994 | May 17, 1994 | 8,900 |
| 340110-98 | Recompletion | Marathon Oil Company | Jan 28, 1988 | Dec 21, 1987 | — | 9,009 |
| 340110-99 | Recompletion | Marathon Oil Company | Dec 11, 1987 | Dec 21, 1987 | — | 9,009 |
| 91317-99 | Other | Marathon Oil Company | Sep 3, 1980 | Sep 3, 1980 | — | 9,099 |
| 83730-99 | Other | Marathon Oil Company | May 2, 1980 | May 2, 1980 | — | 9,099 |
| 44545-99 | Recompletion | Marathon Oil Company | Mar 16, 1979 | Mar 16, 1979 | — | 9,099 |
| 38481-99 | Recompletion | Marathon Oil Company | Dec 8, 1978 | Dec 8, 1978 | — | 9,099 |
| 14750-99 | Recompletion | Marathon Oil Company | Dec 27, 1977 | Dec 27, 1977 | — | 9,099 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 22, 2000 | Ohio-Sun Unit O-3-8049 | Markham N.-Bay City N (Pietz) | Goldking Minerals Mgmt L.L.C. | Shut In · shut in Oct 1, 2008 | 9,009 |
| May 23, 1994 | Ohio-Sun Unit O-3-2998 | Markham N.-Bay City N(cornelius) | Goldking Minerals Mgmt L.L.C. | Not on Schedule | — |
| Dec 15, 1988 | Ohio-Sun Unit O-3-2997 | Markham N.-Bay City N (Cayce) | Goldking Minerals Mgmt L.L.C. | Not on Schedule | — |
| Aug 12, 1980 | Ohio Sun Unit G-3-91339 | Markham N.-Bay City N (Braman) | Marathon Oil Company | Not on Schedule | — |
| — | Ohio-Sun Unit O-3-2998 | Markham N.-Bay City N(cornelius) | Goldking Minerals Mgmt L.L.C. | Not on Schedule | — |
| — | Ohio-Sun Unit O-3-2997 | Markham N.-Bay City N (Cayce) | Goldking Minerals Mgmt L.L.C. | Not on Schedule | — |
| — | Ohio-Sun Unit O-3-2996 | Markham N.-Bay City N (Carlson) | Goldking Minerals Mgmt L.L.C. | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 59 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 2,500 | -2,441 |
| Anahuac | 5,500 | -5,441 |
| Frio | 6,500 | -6,441 |
| Frio | 6,900 | -6,841 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,970 | — | Perforated |
| 7,354 | 7,356 | Perforated |
| 7,673 | 7,676 | Perforated |
| 7,699 | — | Perforated |
| 7,786 | 7,792 | Perforated |
| 7,981 | 7,984 | Perforated |
| — | 7,792 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,551 | 14.75 | 800 S |
| 10.75 | 1,551 | 15 | 800 S |
| 10.75 | 1,551 | — | 800 S |
| 10.75 | 2,074 | 15 | 1,200 S |
| 5.5 | 2,330 | — | — |
| 5.5 | 5,812 | — | — |
| 2.375 | 6,924 | — | — |
| 2.375 | 7,606 | — | — |
| 5.5 | 8,262 | 8.75 | 700 S |
| 5.5 | 8,264 | 8.75 | 700 S |
| 5.5 | 8,264 | — | 700 S |
| 7 | 8,888 | 9.875 | 1,000 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 | Apr 28, 2000 | Mar 30, 2000 | Yes |
| 00 | Apr 13, 2000 | Jun 10, 1994 | Yes |
| 00 | Aug 11, 1994 | Jun 10, 1994 | Yes |
| 00 | Jul 25, 1994 | Jul 1, 1992 | — |
| 00 | Jul 20, 1992 | Jul 1, 1992 | — |
| 00 | Jan 30, 1989 | Jan 4, 1989 | — |
| 00 | Mar 18, 1988 | Mar 7, 1988 | Yes |
| 00 | Mar 17, 1988 | — | — |
| 00 | Jan 12, 1984 | Jan 27, 1981 | — |
| 00 | Jan 12, 1984 | Dec 29, 1977 | — |
| 00 | Jan 12, 1984 | Apr 21, 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 42-321-00068 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-00068 → 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/32100068, documented in the API reference.