TEXAS · WELLS · BRAZORIA COUNTY · API 42-039-33025 · DISTRICT 03
Old Ocean Unit #256
Brazoria County · Old Ocean (F-26) field · Producing · Directional
Old Ocean Unit #256 (API 42-039-33025) is a well in Brazoria County operated by Hilcorp Energy Company, completed June 22, 2010 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 15, 2009, permitted to 12,155 ft.
Completion filings report 3 formation tops, including Chenault, Armstrong, Larsen.
Its 3 leases have reported 87.6K barrels of oil and 1.48M mcf of gas since February 2010, last reporting volume in April 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,454
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Hilcorp Energy CompanyJun 15, 2009 |
- 12,155
- total depth, ft
- 1
- permits on file
- Jun 15, 2009
- last permit issued
- Jun 22, 2010
- completed
- 87.6K
- cumulative oil, bbl
- 1.48M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2010 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 22, 2010
- Shut in
- —
- 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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Old Ocean Unit G-3-257089 | Old Ocean (F-26) | Hilcorp Energy Company | 1 | 87.6K | 1.48M | Feb 2010 – Apr 2026 |
| Old Ocean Unit G-3-258483 | Old Ocean, S. (Hellmuth 12,500) | Hilcorp Energy Company | 1 | 0 | 0 | Mar 2010 – — |
| Old Ocean Unit G-3-258484 | Old Ocean (F-25) | Hilcorp Energy Company | 1 | 0 | 0 | Jun 2010 – — |
Gas, mcf lease total
Last 12 months 46,530 · prior 12 46,588(0%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Hilcorp Energy CompanyFeb 2010 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 682112-99 | Drill | Hilcorp Energy Company | Jun 12, 2009 | Jun 15, 2009 | Jan 8, 2010 | 13,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 22, 2010 | Old Ocean Unit G-3-258484 | Old Ocean (F-25) | Hilcorp Energy Company | SWR-10-Well · shut in Jun 1, 2010 | 12,155 |
| Jun 22, 2010 | Old Ocean Unit G-3-257089 | Old Ocean (F-26) | Hilcorp Energy Company | Producing | 12,155 |
| Mar 3, 2010 | Old Ocean Unit G-3-258483 | Old Ocean S. (Hellmuth 12 500) | Hilcorp Energy Company | SWR-10-Well · shut in Mar 1, 2010 | 12,155 |
Formation tops
As filed on W-2/G-1. Subsea from 25 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Chenault | 9,840 | -9,815 |
| Armstrong | 10,170 | -10,145 |
| Larsen | 10,670 | -10,645 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,197 | 11,234 | Perforated |
| 11,307 | 11,341 | Perforated |
| 11,382 | 11,525 | Perforated |
| 11,488 | 11,500 | Perforated |
| 11,686 | 11,815 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,555 | 13.5 | 875 S |
| 7 | 10,926 | 9.875 | 1,000 S |
| 4.5 | 12,155 | 6.125 | 340 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 11, 2011 | Jul 21, 2010 | — |
| 00 | Jan 26, 2011 | Jul 21, 2010 | — |
| 00 | Jan 25, 2011 | Jul 21, 2010 | Yes |
| 00 | Jan 10, 2011 | — | — |
| 00 | Sep 16, 2010 | Apr 14, 2010 | Yes |
| 00 | Sep 1, 2010 | — | Yes |
Well logs
3 logs loaded from the RRC's log index, the latest received Nov 10, 2015. Density, Neutron, Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| RESISTIVITYSpans Chenault, Armstrong, Larsen | TIFF | 2,568 to 12,144 | Nov 10, 2015run Feb 18, 2010 | 3.49 |
| NEUTRON/DENSITY POROSITYSpans Larsen | TIFF | 10,937 to 12,155 | Jun 25, 2013run Feb 18, 2010 | 0.64 |
| NEUTRON/DENSITY POROSITYSpans Chenault, Armstrong, Larsen | TIFF | 2,568 to 10,939 | Jun 25, 2013run Jan 27, 2010 | 1.64 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-039-33025 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-039-33025 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/03933025, documented in the API reference.