WELL · 42-409-31152 · DISTRICT 4

Welder Ranch #14

Welder Ranch #14 (API 42-409-31152) is a disposal or injection well in San Patricio County operated by Mertz Energy LLC under an active UIC permit.

The RRC has issued 7 drilling permits between 1977 and 2016, permitted to 8,100 ft.

Completion filings report 3 formation tops, including Catahoula, Miocene (undifferentiated), Vicksburg.

Its 3 leases have reported 13.8K barrels of oil and 130K mcf of gas since January 1993, last reporting in July 2026. The leases carry 6 wells, so these are lease totals, not this well alone.

It holds an active disposal or injection permit, with 146K barrels injected in the 12 months reported through November 2025.

Operator of record

Mertz Energy LLC

Houston, TX · P-5 Y, filed Apr 8, 2022 · 6 permits on file · (281) 205-8140

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	none
Production reports	Edge Petroleum Oper. Co., Inc.through Sep 2009
Latest permit	Mertz Energy LLCDec 13, 2016

8,100: total depth, ft
7: permits on file
Dec 13, 2016: last permit issued
—: completed
13.8K: cumulative oil, bbl
130K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

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 3 leases this well is completed on; they carry 6 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Welder Ranch G-4-282962	Oneil (4550)	Sun Exploration, Inc.	1	0	0	Dec 2017 – Jul 2026
Welder Ranch O-4-13061	Angelita New (Frio)	Urban Oil & Gas Group, LLC	4	13.8K	103K	Nov 2001 – Mar 2023
Welder Ranch G-4-96604	Oneil (3270)	Smith Production Inc.	1	0	27.4K	Jan 1993 – Nov 2001

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.

1Union Pacific Resources CompanyJan 1993 → Feb 1993
2Smith Production Inc.Mar 1993 → Nov 2006
3Edge Petroleum Oper. Co., Inc.Feb 2007 → Sep 2009

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
821200-99	Reenter	Mertz Energy LLC	Dec 13, 2016	Dec 13, 2016	Nov 15, 2017	7,900
515740-99	Recompletion	Smith Production Inc.	Nov 30, 2001	Dec 4, 2001	Aug 6, 2001	7,900
136168-99	Recompletion	Amoco Production Company	Oct 13, 1981	Oct 13, 1981	—	7,900
37016-99	Recompletion	Amoco Production Company	Nov 16, 1978	Nov 16, 1978	—	7,900
28272-99	Recompletion	Amoco Production Company	Jul 10, 1978	Jul 10, 1978	—	6,430
21071-99	Recompletion	Amoco Production Company	Mar 28, 1978	Mar 28, 1978	—	6,430
191-99	Drill	Amoco Production Company	Jun 16, 1977	Jun 16, 1977	—	8,100

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— G-4-96604	—	—	—	—
—	— G-4-282962	—	—	—	—
—	— O-4-13061	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 20 ft elevation.Download CSV →

Formation	MD ft	Subsea
CatahoulaCATAHOULA-ANAHUAC - INJECTION/DI	3,220	-3,200
CatahoulaCATAHOULA-FRIO - INJECTION/DISPO	3,670	-3,650
Miocene (undifferentiated)MIOCENE-LAGARTO-OAKVILLE - INJEC	—	—
Vicksburg	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
3,268	3,272	Perforated
4,368	4,378	Perforated
4,564	4,570	Perforated
4,928	4,938	Perforated
6,168	6,174	Perforated
6,266	6,270	Perforated
6,335	6,345	Perforated
6,438	6,446	Perforated
6,600	—	Perforated
—	6,591	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
10.75	2,213	14.75	1,550 S
10.75	2,218	14.75	1,550 S
10.75	2,218	—	1,550 S
10.75	2,227	14.088	1,550 S
10.75	2,227	14.75	1,550 S
2.375	3,224	—	—
2.375	4,330	—	—
7	7,223	—	1,120 S
7	7,223	9.875	1,720 S
7	7,245	8.5	75 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
Jan 10, 2018	Dec 6, 2017	Yes
Jan 10, 2002	Dec 4, 2001	Yes
Dec 21, 2001	—	—
Jun 25, 1997	Jun 9, 1997	—
Jan 12, 1984	Feb 8, 1982	—
Jan 12, 1984	Aug 23, 1979	—
Jan 12, 1984	Jun 16, 1978	—
Jan 12, 1984	Jan 30, 1978	—

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 42-409-31152 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-409-31152 → 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.

Beyond the permit record

RRC UIC permits · H-10 reported volumes

Injection

146K: bbl, last 12 reported months
1.06M: bbl, all reported
Nov 2025: reported through

UIC	Kind	Status	Permitted bbl/d	Max psi	Zone ft
000114840	H-1 Injection	Active	5,000	1,835	3,670–4,650

MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS

Last 12 months 145,825 · prior 12 146,700(-1%)

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/40931152, documented in the API reference.