WELL · 42-479-34299 · DISTRICT 4

Armstrong Ranch A #1

Plugged

Webb County · Berry R. Cox (Wx. 3RD Hinnant) field · Vertical

Armstrong Ranch A #1 (API 42-479-34299) is a plugged well in Webb County, plugged November 7, 2022, last operated by Cox Martin Regan.

The RRC has issued 7 drilling permits (amended 3 times) between 1985 and 2007, permitted to 16,000 ft.

Completion filings report 4 formation tops, including Queen City, Wilcox, Wilocx 4th Hinnant, H-5.

Operator of record

Cox Martin Regan

Irving, TX · P-5 Y, filed Jun 4, 2026 · 15 permits on file

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Cox Martin Regan
Production reports	Cox, Martin Reganthrough Feb 2008
Latest permit	Cox, Martin ReganAug 21, 2007

16,000: total depth, ft
10: permits on file
Aug 21, 2007: last permit issued
Dec 11, 2007: completed
0: cumulative oil, bbl
895K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Dec 11, 2007
Shut in: —
Plugged: Nov 7, 2022

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 8 leases this well is completed on; they carry 3 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Gas, mcf	Reported
Armstrong Ranch G-4-179562	Aviators, South (Wilcox 9900)	Cox, Martin Regan	1	265K	Oct 2000 – Jul 2026
Armstrong Ranch 'A' G-4-236536	Berry R. Cox (Wx. 3RD Hinnant)	Cox, Martin Regan	1	20.7K	Dec 2007 – Nov 2022
Armstrong Ranch G-4-143371	Aviators, South (Wilcox 12000)	Cox, Martin Regan	1	610K	Jan 1993 – Oct 2000
— G-4-121335	—	—	0	0	—
— G-4-135055	—	—	0	0	—
— G-4-136246	—	—	0	0	—
— G-4-136711	—	—	0	0	—
— G-4-136948	—	—	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.

1XCL-Texas, Inc.Jan 1993 → Dec 1999
2Cox, Martin ReganJan 2000 → Feb 2008

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
644484-99	Recompletion	Cox, Martin Regan	Aug 15, 2007	Aug 21, 2007	Oct 2, 2007	15,142
499265-98	Recompletion	Cox, Martin Regan	Oct 23, 2000	Sep 8, 2000	Sep 16, 2000	15,222
499265-99	Recompletion	Cox, Martin Regan	Sep 5, 2000	Sep 8, 2000	—	15,222
399846-98	Recompletion	XCL-Texas, Inc.	Oct 16, 1992	Jun 4, 1992	Aug 23, 1992	15,222
399846-99	Recompletion	XCL-Texas, Inc.	Jun 2, 1992	Jun 4, 1992	—	15,222
379070-99	Recompletion	Texas, L. Petroleum, Inc.	Oct 5, 1990	Oct 25, 1990	Oct 24, 1990	15,222
378037-99	Recompletion	Texas, L. Petroleum, Inc.	Sep 17, 1990	Sep 19, 1990	—	15,222
371499-98	Recompletion	Cox Oil & Gas, Inc.	May 11, 1990	Mar 28, 1990	—	15,222
371499-99	Recompletion	Cox Oil & Gas, Inc.	Mar 27, 1990	Mar 28, 1990	—	15,222
291330-99	Drill	Cox, Edwin L. & Cox, Berry R.	Nov 22, 1985	Nov 25, 1985	Dec 23, 1985	16,000

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— G-4-121335	—	—	—	—
—	— G-4-135055	—	—	—	—
—	— G-4-136246	—	—	—	—
—	— G-4-136711	—	—	—	—
—	— G-4-136948	—	—	—	—
—	— G-4-143371	—	—	—	—
—	— G-4-179562	—	—	—	—
—	— G-4-236536	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 880 ft elevation.Download CSV →

Formation	MD ft	Subsea
Queen City	5,190	-4,310
Wilcox	9,036	-8,156
WilcoxWILCOX 1ST HINNANT	9,497	-8,617
WilcoxWILCOX 4TH HINNANT	10,112	-9,232
Wilocx 4TH Hinnant	10,112	-9,232
WilcoxWILCOX 5TH HINNANT	11,822	-10,942
H-5	11,823	-10,943
WilcoxWILCOX 13TH HINNANT	14,163	-13,283

Perforations

Perforated and open-hole intervals.

From	To	Type
9,794	9,816	Perforated
10,293	10,296	Perforated
10,365	10,394	Perforated
11,826	11,831	Perforated
11,836	11,863	Perforated
11,872	11,880	Perforated
13,211	13,252	Perforated
14,164	14,212	Perforated
14,219	14,227	Perforated
14,230	14,232	Perforated
14,235	14,237	Perforated
14,241	14,250	Perforated
14,418	14,438	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	1,600	17.5	1,035 S
9.75	8,496	12.25	650 S
9.625	8,496	12.25	650 S
9.625	—	—	—

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
Jul 28, 2008	Apr 11, 2008	—
Jul 11, 2008	—	—
Feb 5, 2001	Oct 23, 2000	Yes
Nov 22, 2000	—	—
Jan 21, 1993	Oct 15, 1992	Yes
Jan 6, 1993	—	—
May 2, 1991	Jan 9, 1991	Yes
Apr 11, 1991	Sep 13, 1990	Yes
Feb 20, 1991	—	—
Feb 4, 1991	—	—
Dec 17, 1990	—	—
Jul 19, 1990	May 14, 1990	Yes
Jul 7, 1990	—	—
Jun 19, 1986	Apr 10, 1986	Yes
Jun 14, 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 42-479-34299 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-479-34299 → 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/47934299, documented in the API reference.