TEXAS · WELLS · STARR COUNTY · GARZA - MONTALVO GAS UNIT LEASE · API 42-427-00555 · DISTRICT 04
Garza - Montalvo Gas Unit #28
Starr County · Sun North (Garza) field · Temp Abandoned · Vertical
Garza - Montalvo Gas Unit #28 (API 42-427-00555) is a well in Starr County operated by Killam Oil CO. Ltd., completed March 27, 1988 and listed as temp abandoned on the RRC schedule, shut in April 1, 2013.
The RRC has issued 2 drilling permits between 1981 and 1987, permitted to 6,550 ft.
It was permitted by Sun Expl. & Prod. CO.-Corpus and has since transferred to Killam Oil CO. Ltd. on the wellbore schedule.
Completion filings report 5 formation tops, including Garza Sand, C-3-C Sand, F-2 Sand, F-4-K-4 Sand.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Sun Expl. & Prod. Co.-Corpus; 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
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Killam Oil Co. Ltd. |
| Production reports | Killam Oil Co., Ltd.through Mar 2013 |
| Latest permit | Sun Expl. & Prod. Co.-CorpusNov 24, 1987 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,550
- total depth, ft
- 2
- permits on file
- Nov 24, 1987
- last permit issued
- Mar 27, 1988
- completed
- 0
- cumulative oil, bbl
- 423K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 27, 1988
- Shut in
- Apr 1, 2013
- 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 lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Garza - Montalvo Gas Unit G-4-126939 | Sun, North (Garza) | Killam Oil Co., Ltd. | 1 | 0 | 423K | Jan 1993 – Jul 2026 |
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.
- 1Oryx Energy CompanyJan 1993 → Mar 1999
- 2Kerr-McGee CorporationApr 1999 → Sep 1999
- 3Kerr-McGee Oil & Gas Onshore LLCOct 1999 → Feb 2006
- 4Kerr-McGee Oil & Gas Onshore LPMar 2006 → Jun 2011
- 5Exaro Energy II, LLCJul 2011 → Jul 2012
- 6Killam Oil Co., Ltd.Nov 2012 → Mar 2013
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 339056-99 | Recompletion | Sun Expl. & Prod. Co.-Corpus | Nov 19, 1987 | Nov 24, 1987 | — | 6,500 |
| 131337-99 | Recompletion | Sun Expl. & Prod. Co.-Corpus | Aug 27, 1981 | Aug 27, 1981 | — | 6,550 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 27, 1988 | Garza - Montalvo Gas Unit G-4-126939 | Sun North (Garza) | Killam Oil Co. Ltd. | Temp Abandoned · shut in Apr 1, 2013 | 6,550 |
| Sep 23, 1981 | Degarza C. L. G-4-99715 | Sun North (H-4-3) | Sun Expl. & Prod. Co.-Corpus | Not on Schedule | — |
| — | De Garza C. L. O-4-5261 | Sun North (F-4-K-4) | Sun Exploration & Production Co. | Not on Schedule | — |
| — | Degarza C. L. O-4-8924 | Sun North (C-3-C) | Sun Expl. & Prod. Co.-Corpus | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 322 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Garza Sand | 4,326 | -4,004 |
| C-3-C Sand | 4,546 | -4,224 |
| F-2 Sand | 5,244 | -4,922 |
| F-4-K-4 Sand | 5,410 | -5,088 |
| H-4-3 Sand | 5,753 | -5,431 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,326 | 4,350 | Perforated |
| 5,733 | 5,775 | Perforated |
| — | 5,419 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 914 | 13.75 | 350 S |
| 2.375 | 5,692 | — | — |
| 4.5 | 5,834 | 8.625 | 460 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 →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Aug 1, 1988 | Jun 17, 1988 | — |
| 00 | May 11, 1988 | Apr 18, 1988 | Yes |
| 00 | Apr 29, 1988 | — | — |
| 00 | Jan 12, 1984 | May 13, 1982 | — |
| 00 | Jan 12, 1984 | Jul 8, 1977 | — |
| 00 | 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 42-427-00555 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-427-00555 → 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/42700555, documented in the API reference.