WELL · 42-481-33423 · DISTRICT 3
Cockburn Unit #2
Wharton County · Magnet Withers E. (Frio) field · Vertical
Cockburn Unit #2 (API 42-481-33423) is a well in Wharton County operated by Atasca Resources Inc., completed May 12, 1991.
The RRC has issued 2 drilling permits between 1990 and 1997, permitted to 7,000 ft.
Completion filings report one formation top, including Frio.
Its 2 leases have reported 264K barrels of oil and 44K mcf of gas since January 1993, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Sep 4, 2025 · 24 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Atasca Resources Inc. |
| Production reports | Atasca Resources, Inc.through Apr 2004 |
| Latest permit | Atasca Resources, Inc.Dec 19, 1997 |
- 7,000
- total depth, ft
- 2
- permits on file
- Dec 19, 1997
- last permit issued
- May 12, 1991
- completed
- 264K
- cumulative oil, bbl
- 44K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 12, 1991
- Shut in
- —
- Plugged
- —
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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cockburn Unit O-3-16109 | Magnet Withers, E.(frio Lower) | McGowan Working Partners, Inc. | 2 | 223K | 31.8K | Jan 1993 – Jul 2026 |
| Cockburn Unit O-3-21160 | Magnet Withers, E. (Frio) | Atasca Resources, Inc. | 1 | 40.9K | 12.2K | Jan 1993 – Jun 1998 |
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.
- 1Hunt Oil CompanyJan 1993 → Dec 1996
- 2Atasca Resources, Inc.Jan 1997 → May 2003
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 470424-99 | Recompletion | Atasca Resources, Inc. | Nov 21, 1997 | Dec 19, 1997 | Apr 1, 1998 | 6,592 |
| 376021-99 | Drill | Pacific Enterprises Oil Co.(usa) | Jul 27, 1990 | Nov 5, 1990 | Mar 14, 1991 | 7,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-16109 | — | — | — | — |
| — | — O-3-21160 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 77 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,652 | 5,657 | Perforated |
| 5,702 | 5,710 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,133 | 14.75 | 1,165 S |
| 7.625 | 3,261 | 9.875 | 300 S |
| 7.625 | 3,285 | 9.875 | 300 S |
| 5.5 | 6,140 | 6.75 | 230 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 | Jun 2, 1998 | May 18, 1998 | Yes |
| 00 | May 22, 1998 | May 24, 1991 | Yes |
| 00 | Sep 25, 1991 | May 24, 1991 | Yes |
| 00 | Sep 13, 1991 | — | — |
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 42-481-33423 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-481-33423 → 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/48133423, documented in the API reference.