WELL · 42-321-31582 · DISTRICT 3

Armstrong Unit #1

Plugged

Matagorda County · Four Corners (13000) field · Vertical

Armstrong Unit #1 (API 42-321-31582) is a plugged well in Matagorda County, plugged March 20, 1991, last operated by Union Pacific Resources Company.

The RRC has issued 2 drilling permits (amended twice) between 1988 and 1990, permitted to 17,000 ft.

Completion filings report 4 formation tops, including Tex - Miss J., Tex-Miss J., Tex - Miss N., Tex-Miss N..

Operator of record

Union Pacific Resources Company

Fort Worth, TX · P-5 Y, filed Feb 9, 2001 · 5,638 permits on file

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Union Pacific Resources Company
Production reports	none
Latest permit	Union Pacific Resources CompanyJun 15, 1990

17,000: total depth, ft
4: permits on file
Jun 15, 1990: last permit issued
Sep 6, 1989: completed
0: cumulative oil, bbl
0: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Sep 6, 1989
Shut in: —
Plugged: Mar 20, 1991

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
— G-3-132753	—	—	0	0	0	—
— G-3-136823	—	—	0	0	0	—

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

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
374581-98	Recompletion	Union Pacific Resources Company	Jan 17, 1991	Jun 15, 1990	May 31, 1990	15,529
374581-99	Recompletion	Union Pacific Resources Company	Jun 15, 1990	Jun 15, 1990	—	15,529
353789-98	Drill	Union Pacific Resources Company	Dec 19, 1989	Nov 30, 1988	—	15,529
353789-99	Drill	Wolverine Exploration Company	Nov 30, 1988	Nov 30, 1988	—	17,000

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— G-3-132753	—	—	—	—
—	— G-3-136823	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 19 ft elevation.Download CSV →

Formation	MD ft	Subsea
Tex - Miss J.	12,798	-12,779
Tex-Miss J.	12,798	-12,779
Tex - Miss N.	13,815	-13,796
Tex-Miss N.	13,815	-13,796

Perforations

Perforated and open-hole intervals.

From	To	Type
12,239	12,246	Perforated
12,784	12,796	Perforated
12,816	12,832	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	3,007	17.5	2,020 S
9.625	10,536	12.25	870 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 →

Filed	W-2 / G-1 date	Logs referenced
Feb 26, 1991	Jul 11, 1990	Yes
Feb 8, 1991	—	—
Jan 9, 1990	Dec 19, 1989	Yes
Jan 3, 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 42-321-31582 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-321-31582 → 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/32131582, documented in the API reference.