TEXAS · WELLS · ECTOR COUNTY · API 42-135-35214 · DISTRICT 7B
Williamson Estate -28- #1
Ector County · Goldsmith W. (San Andres) field · Vertical
Williamson Estate -28- #1 (API 42-135-35214) is a plugged well in Ector County, plugged October 27, 2011, last operated by Oxy USA Wtp LP.
The RRC has issued 3 drilling permits between 1985 and 1999, permitted to 8,600 ft.
It was permitted by Oxy USA Inc. and has since transferred to Oxy USA Wtp LP on the wellbore schedule.
Completion filings report 2 formation tops, including San Andres, Clear Fork.
Its 2 leases have reported 5.61K barrels of oil and 45.6K mcf of gas since January 1993, with no volume in the three years through April 2026.
Operator of record
Permitted by OXY USA Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Oct 16, 2025
- Permits on file
- 2,289
- Phone
- (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | OXY USA WTP LP |
| Production reports | OXY USA WTP LPthrough Aug 2009 |
| Latest permit | OXY USA Inc.Oct 13, 1999 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,600
- total depth, ft
- 3
- permits on file
- Oct 13, 1999
- last permit issued
- Feb 27, 1990
- completed
- 5.61K
- cumulative oil, bbl
- 45.6K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Aug 2009
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 27, 1990
- Shut in
- —
- Plugged
- Oct 27, 2011
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Williamson Estate -28- O-10-32556 | Goldsmith, W. (San Andres) | OXY USA WTP LP | 1 | 5.61K | 45.6K | Jan 1993 – Aug 2009 |
| — O-10-30533 | — | — | 0 | 0 | 0 | — |
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.
- 1Mariah Energy Corp.Jan 1993 → Aug 1996
- 2Banam CorporationSep 1996 → Sep 1999
- 3OXY USA Inc.Oct 1999 → Dec 2000
- 4OXY USA WTP LPAug 2009 → Aug 2009
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 488473-99 | Recompletion | OXY USA Inc. | Oct 13, 1999 | Oct 13, 1999 | — | 8,300 |
| 369818-99 | Recompletion | Mariah Energy Corp. | Feb 13, 1990 | Feb 20, 1990 | — | 8,200 |
| 293446-99 | Drill | Rust Oil Corp. | Dec 19, 1985 | Dec 19, 1985 | — | 8,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 27, 1990 | Williamson Estate -28- O-10-32556 | Goldsmith W. (San Andres) | OXY USA WTP LP | Plugged | — |
| Jan 29, 1986 | Williamson Estate -28- O-10-30533 | Goldsmith W. (Clear Fork Up.) | Mariah Energy Corp. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,360 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,220 | -860 |
| Clear ForkCLEARFORK | 5,632 | -2,272 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,221 | 4,324 | Perforated |
| 5,717 | 5,750 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 293 | 17.5 | 350 S |
| 8.625 | 3,800 | 12.25 | 1,700 S |
| 8.625 | 3,800 | 12.5 | 1,700 S |
| 5.5 | 8,200 | 7.875 | 5,900 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 | Apr 10, 1990 | Mar 6, 1990 | Yes |
| 00 | Mar 20, 1990 | — | — |
| 00 | Mar 10, 1986 | Feb 26, 1986 | Yes |
| 00 | Mar 5, 1986 | — | — |
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 42-135-35214 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-35214 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it. The University Lands library has no per-well link: then paste it into its 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/13535214, documented in the API reference.