WELL · 42-427-31512 · DISTRICT 4
Montalvo N. R. #11
Starr County · Sun North (6250 S) field · Vertical
Montalvo N. R. #11 (API 42-427-31512) is a plugged well in Starr County, plugged March 26, 2010, last operated by Sun Expl. & Prod. CO.-Corpus.
The RRC has issued 3 drilling permits between 1981 and 2007, permitted to 6,800 ft.
It was permitted by Kerr-Mcgee Oil & Gas Onshore LP and has since transferred to Sun Expl. & Prod. CO.-Corpus on the wellbore schedule.
Completion filings report 3 formation tops, including F-3-D, Seg. 3, 6150, 6250.
Its 2 leases have reported 21.7K barrels of oil and 102K mcf of gas since January 1993, last reporting in February 2020. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Kerr-McGee Oil & Gas Onshore LP; 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 | Kerr-McGee Oil & Gas Onshore LPthrough Feb 2008 |
| Latest permit | Kerr-McGee Oil & Gas Onshore LPOct 11, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,800
- total depth, ft
- 3
- permits on file
- Oct 11, 2007
- last permit issued
- May 23, 1981
- completed
- 21.7K
- cumulative oil, bbl
- 102K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Feb 2020
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 23, 1981
- Shut in
- —
- Plugged
- Mar 26, 2010
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 2 leases this well is completed on; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Montalvo, N. R. O-4-10909 | Sun, North (F-3-D, Seg. 3) | Kerr-McGee Oil & Gas Onshore LP | 2 | 21.7K | 102K | Jan 1993 – Feb 2020 |
| Montalvo, N. R. G-4-233032 | Sun, N. (D-X-G, Seg. C) | Kerr-McGee Oil & Gas Onshore LP | 1 | 0 | 337 | Oct 2007 – Mar 2010 |
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 → Oct 2001
- 4Kerr-McGee Oil & Gas Onshore LPOct 2007 → Feb 2008
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 647346-99 | Recompletion | Kerr-McGee Oil & Gas Onshore LP | Oct 5, 2007 | Oct 11, 2007 | Oct 29, 2007 | 5,500 |
| 246290-99 | Recompletion | Sun Expl. & Prod. Co.-Corpus | Jul 24, 1984 | Jul 25, 1984 | — | 6,448 |
| 110641-99 | Drill | Sun Expl. & Prod. Co.-Corpus | Mar 4, 1981 | Mar 4, 1981 | Mar 20, 1981 | 6,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-233032 | — | — | — | — |
| — | — O-4-10909 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 331 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| F-3-D, Seg. 3 | 5,530 | -5,199 |
| 6150 | 6,151 | -5,820 |
| 6250 | 6,288 | -5,957 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,042 | 5,050 | Perforated |
| 5,530 | 5,542 | Perforated |
| 6,151 | 6,185 | Perforated |
| 6,288 | 6,310 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,513 | 12.25 | 450 S |
| 9.625 | 1,513 | — | — |
| 2.167 | 6,118 | — | — |
| 2.375 | 6,254 | — | — |
| 5.5 | 6,446 | 8.75 | 900 S |
| 5.5 | 6,447 | — | — |
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 | Feb 19, 2008 | Dec 13, 2007 | Yes |
| 00 | Feb 13, 2008 | — | — |
| 00 | Feb 19, 1986 | Oct 21, 1985 | — |
| 00 | Feb 13, 1986 | — | — |
| 00 | Oct 30, 1984 | Sep 13, 1984 | — |
| 00 | Oct 6, 1984 | — | — |
| 00 | Jan 12, 1984 | Jun 24, 1981 | — |
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 42-427-31512 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-427-31512 → 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/42731512, documented in the API reference.