WELL · 42-163-33584 · DISTRICT 1

Williams Trust #1

Plugged

Frio County · Wildcat field · Vertical

Williams Trust #1 (API 42-163-33584) is a plugged well in Frio County, plugged December 12, 2013, last operated by Killam Oil CO. Ltd..

The RRC has issued one drilling permit, issued April 12, 2012, permitted to 6,500 ft.

It was permitted by Harper Hefte, Inc. and has since transferred to Killam Oil CO. Ltd. on the wellbore schedule.

Completion filings report 3 formation tops, including Upper Cretaceous, San Miguel, Anacacho.

Operator of record

Killam Oil Co. Ltd.

Permitted by Harper Hefte, Inc.; the EWA schedule now lists a different operator.

Laredo, TX · P-5 Y, filed Feb 4, 2026 · 837 permits on file · (956) 724-7141

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Killam Oil Co. Ltd.
Production reports	none
Latest permit	Harper Hefte, Inc.Apr 12, 2012

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

6,500: total depth, ft
1: permits on file
Apr 12, 2012: last permit issued
Aug 20, 2012: completed
0: cumulative oil, bbl
0: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Aug 2012 THROUGH Feb 2014

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Aug 20, 2012
Shut in: —
Plugged: Dec 12, 2013

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
Williams Trust O-1-17154	Wildcat	Killam Oil Co., Ltd.	1	0	0	Aug 2012 – Feb 2014

No volumes reported on these leases in the last three years.

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
735873-99	Drill	Harper Hefte, Inc.	Mar 12, 2012	Apr 12, 2012	Apr 22, 2012	6,500

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-1-17154	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 587 ft elevation.Download CSV →

Formation	MD ft	Subsea
Upper Cretaceous	3,521	-2,934
San Miguel	5,122	-4,535
Anacacho	5,628	-5,041

Perforations

Perforated and open-hole intervals.

From	To	Type
6,024	6,066	Perforated
6,074	6,080	Perforated
6,084	6,102	Perforated
6,110	6,116	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
8.625	665	12.25	297 S
4.5	6,459	7.875	610 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	Dec 10, 2013	Apr 26, 2013	Yes

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 42-163-33584 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-163-33584 → 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/16333584, documented in the API reference.