Well 257, OLD OCEAN UNIT, Brazoria County, Texas
API 03933044 — recorded on 3 leases.
Total depth
12,403 ft
Last completion
Jul 29 2025
as filed
Leases
3
Records
3
wellbore filings
Leases
| Lease | Well no. | Operator | Field | Schedule |
|---|---|---|---|---|
| OLD OCEAN UNIT | 257 | HILCORP ENERGY COMPANY | OLD OCEAN (LARSEN) | Off |
| OLD OCEAN UNIT | 257 | HILCORP ENERGY COMPANY | OLD OCEAN (ARMSTRONG) | Off |
| OLD OCEAN UNIT | 257 | HILCORP ENERGY COMPANY | OLD OCEAN (F-25) | On |
The hole
- Total depth
- 12,403 ft
- Casing strings
- 15
- Deepest casing
- 12,592 ft
- Survey
- KEEP, I
- Abstract
- 79
- Block / section
- 42
- Plugging records
- not filed
- Bottom hole location
- 29.04251, -95.70849
29.04251, -95.70849 · NAD83, as filed⌘ or Ctrl + scroll to zoom
Drilling permits
From the Railroad Commission's drilling permit master — the application record, not a record of drilling. A permit is an application the Commission filed and numbered; the spud date is the only field here that says a hole was started. This file carries no approval status, so none is shown.
Permits
3
First issued
May 20 2010
to Aug 20 2025
With a spud date
3
last Feb 5 2013
Deepest permitted
13,000 ft
as applied for
| Permit | Issued | Type | Lease | Depth | Spud |
|---|---|---|---|---|---|
| 909592 | Aug 20 2025 | Recompletion | OLD OCEAN UNITno. 257 | 12,403 ft | Jun 7 2010 |
| 755415 | Jan 28 2013 | Recompletion | OLD OCEAN UNITno. 257 | 12,403 ft | Feb 5 2013 |
| 696228 | May 20 2010 | Drill | OLD OCEAN UNITno. 257 | 13,000 ft | Jun 19 2010 |
What the lease produced
Texas reports oil and gas by lease, never by wellbore, so this is the whole lease. Values are volume multiplied by the published monthly price, the same arithmetic the lease page shows in full.