WELL · 42-427-34691 · DISTRICT 4
Montalvo Heirs B #2
Starr County · Sun North (5410) field · Vertical
Montalvo Heirs B #2 (API 42-427-34691) is a well in Starr County operated by Killam Oil CO. Ltd., completed June 12, 2014.
The RRC has issued 2 drilling permits between 2014 and 2015, permitted to 6,000 ft.
Completion filings report 8 formation tops, including Catahoula, Vicksburg, Cook Mountain, Jackson.
Its 2 leases have reported 5.29K barrels of oil and 9.89K mcf of gas since June 2014, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
- 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 Dec 2017 |
| Latest permit | Killam Oil Co., Ltd.Apr 15, 2015 |
- 6,000
- total depth, ft
- 2
- permits on file
- Apr 15, 2015
- last permit issued
- Jun 12, 2014
- completed
- 5.29K
- cumulative oil, bbl
- 9.89K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2014 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 12, 2014
- 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 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Montalvo Heirs 'B' O-4-13929 | Sun, North (F-3 Frio) | Killam Oil Co., Ltd. | 1 | 356 | 1.91K | Jan 2015 – Jul 2026 |
| Montalvo Heirs 'B' O-4-13886 | Sun, North (5410) | Killam Oil Co., Ltd. | 1 | 4.93K | 7.98K | Jun 2014 – Jun 2015 |
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.
- 1Killam Oil Co., Ltd.Jun 2014 → Dec 2017
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 805393-99 | Recompletion | Killam Oil Co., Ltd. | Apr 8, 2015 | Apr 15, 2015 | Jan 8, 2015 | 5,380 |
| 785377-99 | Drill | Killam Oil Co., Ltd. | Apr 23, 2014 | May 16, 2014 | May 18, 2014 | 6,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-13886 | — | — | — | — |
| — | — O-4-13929 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 322 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| CatahoulaCATAHOULA - FRIO | 4,072 | -3,750 |
| CatahoulaCATAHOULA-FRIO | 4,072 | -3,750 |
| CatahoulaCATAHOULA-FRIO - INJECTION/DISPO | 4,072 | -3,750 |
| Vicksburg | 5,525 | -5,203 |
| VicksburgVICKSBURG - INJECTION/DISPOSAL; | 5,525 | -5,203 |
| CatahoulaCATAHOULA-ANAHUAC - INJECTION/DI | — | — |
| Cook Mountain | — | — |
| JacksonJACKSON - INJECTION/DISPOSAL | — | — |
| Miocene (undifferentiated)MIOCENE-LAGARTO-OAKVILLE - INJEC | — | — |
| Queen CityQUEEN CITY - INJECTION/DISPOSAL | — | — |
| Wilcox | — | — |
| Yegua | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,844 | 4,849 | Perforated |
| 4,927 | 4,929 | Perforated |
| 4,964 | 4,967 | Perforated |
| 5,075 | 5,079 | Perforated |
| 5,166 | 5,169 | Perforated |
| 5,174 | 5,176 | Perforated |
| 5,411 | 5,415 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,051 | 12.25 | 390 S |
| 4.5 | 5,999 | 7.875 | 610 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 | Jun 15, 2017 | May 24, 2017 | — |
| 00 | Nov 29, 2016 | Nov 4, 2016 | — |
| 00 | Nov 30, 2015 | Nov 9, 2015 | — |
| 00 | Jun 9, 2015 | Apr 24, 2015 | Yes |
| 00 | Jan 9, 2015 | Aug 4, 2014 | Yes |
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 42-427-34691 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-427-34691 → 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/42734691, documented in the API reference.