WELL · 42-427-04888 · DISTRICT 4
Montalvo I. V. -C- #37
Starr County · Sun North (D-1) field · Vertical
Montalvo I. V. -C- #37 (API 42-427-04888) is a permitted well in Starr County filed by Sun Exploration & Production CO.; no completion report is on file yet.
The RRC has issued 2 drilling permits between 1983 and 1988, permitted to 5,500 ft.
It was permitted by Sun Exploration & Production CO. and has since transferred to Sun Expl. & Prod. CO.-Corpus on the wellbore schedule.
Operator of record
Permitted by Sun Exploration & Production Co.; the EWA schedule now lists a different operator.
Houston, TX · P-5 New · 1,290 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sun Expl. & Prod. Co.-Corpus |
| Production reports | Killam Oil Co., Ltd.through Apr 2026 |
| Latest permit | Sun Exploration & Production Co.Dec 12, 1988 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,500
- total depth, ft
- 2
- permits on file
- Dec 12, 1988
- last permit issued
- —
- completed
- 0
- cumulative oil, bbl
- 1.26M
- 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 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-4-130461 | Sun, North (Garza) | Killam Oil Co., Ltd. | 1 | 0 | 1.26M | Jan 1993 – Jul 2026 |
Gas, mcf lease total
Last 12 months 11,913 · prior 12 17,229(-31%)
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.Aug 2012 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 354112-99 | Recompletion | Sun Exploration & Production Co. | Dec 9, 1988 | Dec 12, 1988 | — | 5,500 |
| 219677-99 | Recompletion | Sun Expl. & Prod. Co.-Corpus | Oct 28, 1983 | Nov 3, 1983 | — | 5,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-130461 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,252 | 4,293 | Perforated |
| 4,462 | 4,470 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 293 | 12.25 | 115 S |
| 8.625 | 300 | — | — |
| 2.375 | 4,374 | — | — |
| 5.5 | 5,281 | 7.875 | 810 S |
| 5.5 | 5,281 | — | — |
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 | Jun 1, 1989 | Apr 25, 1989 | Yes |
| 00 | Apr 28, 1989 | — | — |
| 00 | Jan 12, 1984 | Nov 28, 1983 | — |
| 00 | Jan 12, 1984 | May 3, 1967 | — |
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 42-427-04888 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-427-04888 → 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/42704888, documented in the API reference.