TEXAS · WELLS · FRIO COUNTY · NICHOLSON HEIRS UNIT LEASE · API 42-163-32592 · DISTRICT 01
Nicholson Heirs Unit #1
Frio County · Pearsall (Austin Chalk) field · Horizontal
Nicholson Heirs Unit #1 (API 42-163-32592) is a plugged horizontal well in Frio County, plugged August 17, 2001, last operated by Williams Clayton Energy Inc..
The RRC has issued one drilling permit, issued November 17, 1989, permitted to 7,500 ft.
It was permitted by Williams, Clayton W., JR., Inc. and has since transferred to Williams Clayton Energy Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Anacacho, Austin Chalk.
Its lease has reported 10.3K barrels of oil and 21 mcf of gas since January 1993, with no volume in the three years through April 2026.
Operator of record
Permitted by Williams, Clayton W., Jr., Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Delinquent (D)
- P-5 last filed
- Apr 11, 2017
- Permits on file
- 1,139
- Phone
- (281) 872-3100
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Williams Clayton Energy Inc. |
| Production reports | Williams, Clayton Energy, Inc.through Oct 1997 |
| Latest permit | Williams, Clayton W., Jr., Inc.Nov 17, 1989 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,500
- total depth, ft
- 1
- permits on file
- Nov 17, 1989
- last permit issued
- Jan 13, 1990
- completed
- 10.3K
- cumulative oil, bbl
- 21
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Oct 1997
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 13, 1990
- Shut in
- —
- Plugged
- Aug 17, 2001
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 lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Nicholson Heirs Unit O-1-12373 | Pearsall (Austin Chalk) | Williams, Clayton Energy, Inc. | 1 | 10.3K | 21 | Jan 1993 – Oct 1997 |
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.
- 1Williams, Clayton W., Jr., Inc.Jan 1993 → Apr 1993
- 2Williams, Clayton Energy, L.L.CMay 1993 → May 1993
- 3Williams, Clayton Energy, Inc.Jun 1993 → Oct 1997
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 366598-99 | Drill | Williams, Clayton W., Jr., Inc. | Nov 17, 1989 | Nov 17, 1989 | Nov 28, 1989 | 7,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 13, 1990 | Nicholson Heirs Unit O-1-12373 | Pearsall (Austin Chalk) | Williams Clayton Energy Inc. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 18 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Anacacho | 6,393 | -6,375 |
| Austin Chalk | 6,755 | -6,737 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,779 | 9,484 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 721 | 13.5 | 220 S |
| 7.625 | 6,779 | 9.875 | 200 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 5, 1990 | Jan 22, 1990 | Yes |
| 00 | Jan 31, 1990 | — | — |
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 42-163-32592 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-32592 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/16332592, documented in the API reference.