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I.V. MONTALVO 'A'

I.v. Montalvo 'A' is an oil lease in Starr County, Texas, operated by Killam Oil Co., Ltd. in the Sun, North (5810) field.

1 well

80bbl oil, last 12 months−87% vs prior year
Operator
Killam Oil Co., Ltd.
County
Starr County
Field
Sun, North (5810)
RRC lease
04-14129

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Where it sits

This county

Starr CountyStarrBrooksJim HoggZapataHidalgoStarr County
Starr County
Gas, last 12 months
31 mcf
Oil in Nov 2024
0 bbl

Checks stopped on this lease?

  • Sales

    No sales reported for the last 12 months of state data (through Jul 2026).

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

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Production by month

Oil output fell 87% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 87% over the last 12 monthsMonthly oil production and gas for I.V. MONTALVO 'A', Dec 2021 to Nov 2024. Oil output fell 87% over the last 12 months. 80 bbl in the 12 months through Nov 2024, against 599 bbl in the 12 months before.Last 12 months: 80 bblbbl per monthmcf per month0020254050607580100100125Jan 22AprJulOctJan 23AprJulOctJan 24AprJulOct
Oil output fell 87% over the last 12 monthsMonthly oil production and gas for I.V. MONTALVO 'A', Dec 2021 to Nov 2024. Oil output fell 87% over the last 12 months. 80 bbl in the 12 months through Nov 2024, against 599 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0020254050607580100100125Jan 22JulJan 23JulJan 24Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

All of the gas went to a transmission line in the last 12 months

All of the gas went to a transmission line in the last 12 monthsShare of I.V. MONTALVO 'A' gas by disposition code each month, Dec 2021 to Nov 2024. All of the gas went to a transmission line in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Jan 22AprJulOctJan 23AprJulOctJan 24AprJulOct
All of the gas went to a transmission line in the last 12 monthsShare of I.V. MONTALVO 'A' gas by disposition code each month, Dec 2021 to Nov 2024. All of the gas went to a transmission line in the last 12 months.Share of gas by disposition code0%50%100%Jan 22JulJan 23JulJan 24Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on I.V. MONTALVO 'A'
API numberWell no.Status
42-427-3476220Shut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Gulfmark Energy, Inc.OilGathers100Dec 1, 2019–
Killam Oil Co., Ltd.Casinghead gasBuys100May 14, 2019–
Enterprise Products Operating LLCCasinghead gasGathers100May 14, 2019–
Flint Hills Resources, LPOilGathers100May 14, 2019Dec 1, 2019

SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).

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656.11 acres on the newest permit

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Permits for I.v. Montalvo 'A'
API numberWell no.Acreson the permit
42-427-3476220656.11

SourceRailroad Commission drilling permits, Oct 3, 2026 (source 1, source 2).

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36 months, newest first

Ledger for I.V. MONTALVO 'A'
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Nov 202400000$69.95$2.12
Oct 202400000$71.99$2.20
Sep 2024052000$70.24$2.28
Aug 202400000$76.68$1.99
Jul 202400000$81.80$2.07
Jun 202400000$79.77$2.54
May 202401000$80.02$2.12
Apr 202402000$85.35$1.60
Mar 202405000$81.28$1.49
Feb 2024011000$77.25$1.72
Jan 2024440660$74.15$3.18
Dec 20233617625250$71.90$2.52
Nov 2023480000$77.69$2.71
Oct 2023520000$85.64$2.98
Sep 2023490000$89.43$2.64
Aug 20232217615150$81.39$2.58
Jul 202350053530$76.07$2.55
Jun 202349056560$70.25$2.18
May 20234117891910$71.58$2.15
Apr 202356088880$79.45$2.16
Mar 202345089890$73.28$2.31
Feb 202364089890$76.83$2.38
Jan 2023601801041040$78.12$3.27
Dec 20226301151150$76.44$5.53
Nov 202267096960$84.37$5.45
Oct 20226518296960$87.55$5.66
Sep 202232054540$84.26$7.88
Aug 202282048480$93.67$8.81
Jul 20226517971710$101.62$7.28
Jun 202289096960$114.84$7.70
May 20224618396960$109.55$8.14
Apr 20224601051050$101.78$6.60
Mar 202286084840$108.50$4.90
Feb 20225118076760$91.64$4.69
Jan 202270072720$83.22$4.38
Dec 20217701141140$71.71$3.76

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

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This lease belongs to

OperatorKillam Oil Co., Ltd.FieldSun, North (5810)CountyStarr County

Killam Oil Co., Ltd. in Starr County

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Sun, North (5810) field

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