WELL · 42-255-00172 · DISTRICT 2

Mueller Unit #1

Mueller Unit #1 (API 42-255-00172) is a permitted well in Karnes County filed by First Rock, Inc.; no completion report is on file yet.

The RRC has issued 2 drilling permits between 1985 and 2000, permitted to 11,100 ft.

Completion filings report one formation top, including Austin Chalk.

Its 2 leases have reported 16.9K barrels of oil and 39.6K mcf of gas since January 1993, last reporting in August 2017. The leases carry 2 wells, so these are lease totals, not this well alone.

Operator of record

First Rock, Inc.

Corpus Christ, TX · P-5 Y, filed Feb 4, 2026 · 68 permits on file · (361) 215-5559

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	none
Production reports	First Rock, Inc.through Apr 2017
Latest permit	First Rock, Inc.Aug 10, 2000

11,100: total depth, ft
2: permits on file
Aug 10, 2000: last permit issued
—: completed
16.9K: cumulative oil, bbl
39.6K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Aug 2017

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: —
Shut in: —
Plugged: —

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; they carry 2 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Mueller Unit O-2-8566	Falls City (Austin Chalk)	First Rock, Inc.	1	6.4K	4.96K	Oct 2000 – Aug 2017
Mueller, H. Unit O-2-3286	Person (Edwards)	First Rock, Inc.	1	10.5K	34.7K	Jan 1993 – May 2017

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.

1Dardenne, C. R.Feb 1993 → Sep 1998
2First Rock, Inc.Oct 2000 → Apr 2017

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
496248-99	Recompletion	First Rock, Inc.	Jun 16, 2000	Aug 10, 2000	Oct 4, 2000	11,079
289628-99	Recompletion	Bruns, H. D.	Nov 8, 1985	Nov 8, 1985	—	11,100

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-2-3286	—	—	—	—
—	— O-2-8566	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 328 ft elevation.Download CSV →

Formation	MD ft	Subsea
Austin Chalk	10,180	-9,852

Perforations

Perforated and open-hole intervals.

From	To	Type
10,229	10,388	Perforated
—	10,896	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
9.625	1,729	—	—
5.5	11,091	8.75	275 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 1, 2001	Nov 3, 2000	Yes
Nov 22, 2000	—	—
Jan 12, 1984	—	—

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 42-255-00172 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-255-00172 → 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/25500172, documented in the API reference.