WELL · 42-321-00755 · DISTRICT 3
Old Ocean Unit #35
Matagorda County · Old Ocean (Larsen) field · Vertical
Old Ocean Unit #35 (API 42-321-00755) is a plugged well in Matagorda County, plugged August 9, 2012, last operated by Amoco Production CO.-Alvin.
The RRC has issued 3 drilling permits between 1980 and 2004, permitted to 10,948 ft.
It was permitted by Hilcorp Energy Company and has since transferred to Amoco Production CO.-Alvin on the wellbore schedule.
Completion filings report 3 formation tops, including F-9, F-10, F-11.
Operator of record
Permitted by Hilcorp Energy Company; the EWA schedule now lists a different operator.
Sweeny, TX · P-5 Y · 74 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Amoco Production Co.-Alvin |
| Production reports | Hilcorp Energy Companythrough Apr 2007 |
| Latest permit | Hilcorp Energy CompanyOct 12, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,948
- total depth, ft
- 3
- permits on file
- Oct 12, 2004
- last permit issued
- Jun 9, 1980
- completed
- 0
- cumulative oil, bbl
- 1.38M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Aug 2012
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 9, 1980
- Shut in
- —
- Plugged
- Aug 9, 2012
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 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Old Ocean Unit G-3-209315 | Old Ocean (F-10) | Hilcorp Energy Company | 1 | 0 | 4.52K | Feb 2005 – Aug 2012 |
| Old Ocean Unit G-3-124841 | Old Ocean (Armstrong) | Hilcorp Energy Company | 1 | 0 | 1.37M | Jan 1993 – Feb 2005 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Amoco Production CompanyJan 1993 → Apr 1998
- 2Hilcorp Energy CompanyMay 1998 → Apr 2007
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 552219-99 | Recompletion | Hilcorp Energy Company | Oct 12, 2004 | Oct 12, 2004 | — | 9,970 |
| 330691-99 | Recompletion | Amoco Production Company | May 26, 1987 | May 26, 1987 | — | 10,700 |
| 101225-99 | Recompletion | Amoco Production Company | Dec 8, 1980 | Dec 8, 1980 | — | 10,948 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-124841 | — | — | — | — |
| — | — G-3-209315 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 48 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| F-9 | 9,680 | -9,632 |
| F-10 | 9,832 | -9,784 |
| F-11 | 9,983 | -9,935 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,552 | 9,600 | Perforated |
| 9,838 | 3,857 | Perforated |
| 9,874 | 9,908 | Perforated |
| 9,990 | 10,000 | Perforated |
| 10,090 | 10,096 | Perforated |
| 10,104 | 10,111 | Perforated |
| 10,668 | 10,690 | Perforated |
| 10,692 | 10,712 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 18.625 | 80 | 24 | 100 S |
| 13.375 | 1,504 | 18 | 1,100 S |
| 9.625 | 7,002 | 12.25 | 400 S |
| 9.625 | 7,003 | 12.25 | 400 S |
| 5.5 | 10,947 | 7.375 | 674 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 | Sep 14, 2005 | May 5, 2005 | — |
| 00 | Jul 13, 2005 | — | — |
| 00 | Sep 16, 1987 | Aug 12, 1987 | Yes |
| 00 | Aug 18, 1987 | — | — |
| 00 | Jan 12, 1984 | Sep 16, 1981 | — |
| 00 | Jan 12, 1984 | Jun 9, 1980 | — |
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 42-321-00755 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-00755 → 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/32100755, documented in the API reference.