Petrora

TEXAS · WELLS · STARR COUNTY · API 42-427-00596 · DISTRICT 04

Montalvo I. V. -C- #28

Shut in

Starr County · Sun North (D-1 Res. 2) field · Temp Abandoned  · Vertical

Montalvo I. V. -C- #28 (API 42-427-00596) is a well in Starr County operated by Killam Oil CO. Ltd., completed April 20, 1995 and listed as temp abandoned on the RRC schedule, shut in January 1, 1998.

The RRC has issued 5 drilling permits (amended once) between 1981 and 1998, permitted to 6,503 ft.

It was permitted by Oryx Energy Company and has since transferred to Killam Oil CO. Ltd. on the wellbore schedule.

Completion filings report 6 formation tops, including D-1 Res.2, Clark Upper, Clark, Upper, F-4-K-4.

No lease production has been reported under this well’s leases.

Operator of record

Killam Oil Co. Ltd.

Permitted by Oryx Energy Company; the EWA schedule now lists a different operator.

Based in
Laredo, TX
P-5 status
Active (A)
P-5 last filed
Apr 9, 2026
Permits on file
837
Phone
(956) 724-7141
Watch this operatorWatch Starr County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleKillam Oil Co. Ltd.
Production reportsOryx Energy Companythrough Aug 1996
Latest permitOryx Energy CompanyFeb 10, 1998

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

6,503
total depth, ft
6
permits on file
Feb 10, 1998
last permit issued
Apr 20, 1995
completed
0
cumulative oil, bbl
66.9K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Apr 20, 1995
Shut in
Jan 1, 1998
Plugged
—

Operator's P-5 on the schedule: Active (A)

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

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Montalvo, I. V. -C- G-4-153886Sun, North (D-1 Res. 2)Killam Oil Co., Ltd.1048.6KApr 1995 – Jul 2026
Montalvo, I.V. -C- G-4-142882Sun, North (Clark, Upper I)Oryx Energy Company1018.3KJan 1993 – Apr 1995
— G-4-95958——000—

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.

  1. 1Oryx Energy CompanyJan 1993 → Aug 1996

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
473220-99RecompletionOryx Energy CompanyFeb 10, 1998Feb 10, 1998—4,789
434566-99RecompletionOryx Energy CompanyApr 5, 1995Apr 5, 1995Apr 12, 19956,503
420754-99RecompletionOryx Energy CompanyFeb 2, 1994Feb 2, 1994May 3, 19946,503
380060-98RecompletionOryx Energy CompanyAug 28, 1992Oct 24, 1990Oct 12, 19926,503
380060-99RecompletionOryx Energy CompanyOct 24, 1990Oct 24, 1990—6,503
125653-99RecompletionSun Expl. & Prod. Co.-CorpusJul 20, 1981Jul 20, 1981—6,503

Completions

CompletedLeaseFieldOperatorStatusDepth
Apr 20, 1995Montalvo I. V. -C- G-4-153886Sun North (D-1 Res. 2)Killam Oil Co. Ltd.Temp Abandoned · shut in Jan 1, 19986,503
May 15, 1994Montalvo I.V. -C- G-4-142882Sun North (Clark Upper I)Oryx Energy CompanyNot on Schedule—
May 15, 1994Montalvo I.V. -C- G-4-142882Sun North (Clark Upper I)Oryx Energy CompanyNot on Schedule—
Aug 14, 1981Montalvo I. V. -C- G-4-95958Sun North (F-4-K-4)Oryx Energy CompanyNot on Schedule—
—Montalvo I.V. -C- G-4-71517Sun North (5400)Sun Expl. & Prod. Co.-CorpusNot on Schedule—
—Montalvo I. V. -C- O-4-5710Sun North (Clark Upper I)Sun Expl. & Prod. Co.-CorpusNot on Schedule—
—Montalvo I. V. -C- O-4-3109Sun NorthOryx Energy CompanyNot on Schedule—

Formation tops

As filed on W-2/G-1. Subsea from 324 ft elevation.Download CSV →

FormationMD ftSubsea
D-1 RES.24,824-4,500
Clark Upper5,059-4,735
Clark, Upper5,059-4,735
F-4-K-45,264-4,940
58015,804-5,480
58105,804-5,480

Perforations

Perforated and open-hole intervals.

FromToType
4,8244,835Perforated
5,0595,067Perforated
5,2645,271Perforated
5,8045,821Perforated
—5,362Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6251,02913.75400 S
2.3755,178——
5.56,1908.75575 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Jun 8, 1995May 4, 1995Yes
00May 10, 1995——
00Aug 5, 1994May 31, 1994Yes
00Dec 18, 1992Nov 10, 1992Yes
00Nov 16, 1992——
00Jan 12, 1984Aug 21, 1981—
00Jan 12, 1984Jun 2, 1977—
00Jan 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.

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/42700596, documented in the API reference.