WELL · 42-417-37998 · DISTRICT 7

Lambshead A4 #1S

Plugged

Shackelford County · Shackelford County Regular (Gas) field · Vertical

Lambshead A4 #1S (API 42-417-37998) is a plugged well in Shackelford County, plugged December 16, 1996, last operated by Throckmorton Oil Inc..

The RRC has issued one drilling permit (amended once), issued January 8, 1996, permitted to 1,999 ft.

Completion filings report 3 formation tops, including Upper Fry, Tannehill, Saddle Creek.

Operator of record

Throckmorton Oil Inc.

Throckmorton, TX · P-5 Y, filed Dec 3, 2004 · 223 permits on file

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Throckmorton Oil Inc.
Production reports	Throckmorton Oil, Inc.through Aug 1996
Latest permit	Throckmorton Oil, Inc.Jan 8, 1996

1,999: total depth, ft
2: permits on file
Jan 8, 1996: last permit issued
Feb 7, 1996: completed
0: cumulative oil, bbl
2.66K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Feb 1996 THROUGH Dec 1996

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Feb 7, 1996
Shut in: —
Plugged: Dec 16, 1996

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
Lambshead A4 G-8-161087	Shackelford County Regular (Gas)	Throckmorton Oil, Inc.	1	0	2.66K	Feb 1996 – Dec 1996

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.

1Throckmorton Oil, Inc.Apr 1996 → Aug 1996

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
443474-98	Drill	Throckmorton Oil, Inc.	May 30, 1996	Jan 8, 1996	Jan 8, 1996	1,999
443474-99	Drill	Throckmorton Oil, Inc.	Jan 5, 1996	Jan 8, 1996	—	1,999

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— G-8-161087	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 1,647 ft elevation.Download CSV →

Formation	MD ft	Subsea
Upper Fry	1,121	526
Tannehill	1,264	383
Saddle Creek	1,308	339

Perforations

Perforated and open-hole intervals.

From	To	Type
1,332	1,340	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
8.625	132	12.25	75 S
4.5	1,766	7.875	167 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	Jan 27, 1997	Feb 29, 1996	Yes
00	Jan 15, 1997	—	—

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 42-417-37998 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-417-37998 → 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/41737998, documented in the API reference.