TEXAS · WELLS · STARR COUNTY · API 42-427-04868 · DISTRICT 04

Montalvo N.R. #28

Plugged

Starr County · Wildcat field · Vertical

Montalvo N.R. #28 (API 42-427-04868) is a plugged well in Starr County, plugged September 28, 1991, last operated by Exxon Corp..

The RRC has issued 3 drilling permits between 1981 and 1991, permitted to 4,995 ft.

Operator of record

Exxon Corp.

Based in: Houston, TX
P-5 status: See remarks (S)
P-5 last filed: Mar 15, 1999
Permits on file: 19,549
Phone: (713) 431-1125

Watch this operator Watch Starr County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Exxon Corp.
Production reports	none
Latest permit	Exxon Corp.Jul 18, 1991

4,995: total depth, ft
3: permits on file
Jul 18, 1991: last permit issued
May 23, 1991: completed
0: cumulative oil, bbl
0: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: May 23, 1991
Shut in: —
Plugged: Sep 28, 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 3 leases this well is completed on; this well is the only one on it.Why →

Lease	Field	Reporting operator	Reported
— G-4-60077	—	—	—
— G-4-64362	—	—	—
— G-4-138669	—	—	—

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

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
389964-99	Recompletion	Exxon Corp.	Jul 16, 1991	Jul 18, 1991	Aug 19, 1991	4,995
386041-99	Recompletion	Exxon Corp.	Mar 22, 1991	Apr 9, 1991	Apr 23, 1991	4,990
145545-99	Recompletion	Exxon Corp.	Dec 29, 1981	Dec 29, 1981	—	4,990

Completions

Completed	Lease	Field	Operator	Status	Depth
May 23, 1991	Montalvo N.R. G-4-138669	Wildcat	Exxon Corp.	Plugged	—
May 23, 1991	Montalvo N.R. G-4-138669	Wildcat	Exxon Corp.	Plugged	—
Feb 25, 1982	Montalvo N.R. G-4-64362	Sun (D-2-B)	Exxon Corp.	Plugged	—
Aug 18, 1974	Montalvo N. R. G-4-60077	Sun (F-1-M 4950)	Exxon Corp.	Plugged	—
—	Montalvo N. R. O-4-6594	Sun (F-4-G)	Exxon Corp.	Plugged	—

Perforations

Perforated and open-hole intervals.

From	To	Type
1,763	1,772	Perforated
4,640	4,645	Perforated
—	4,887	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
8.625	1,025	12.25	325 S
8.625	1,025	—	—
2.875	4,994	—	—
2.875	4,995	—	—

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
Aug 9, 1991	Jul 9, 1991	Yes
Jul 16, 1991	—	—
Jan 12, 1984	Jul 29, 1983	—
Jan 12, 1984	Nov 19, 1974	—
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 42-427-04868 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-427-04868 → 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/42704868, documented in the API reference.