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Texas oil lease

Producing

SANTERRA

Santerra is an oil lease in Duval County, Texas, operated by Rattlesnake Operating Co, LLC in the Lopez, North (Lopez) field.

10 wells

2,200bbl oil, last 12 months−5% vs prior year
Operator
Rattlesnake Operating Co, LLC
County
Duval County
Field
Lopez, North (Lopez)
RRC lease
04-13690

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Where it sits

This county

Duval CountyDuvalJim WellsDuval County
Duval County
Oil in Jul 2026
18 bbl
Reporting since
Jan 2020

Checks stopped on this lease?

  • Operator

    Operator changed: Rattlesnake Operating Co, LLC took over from Jalapeno Operating Company, LLC in Oct 2025.

  • P-5

    The previous operator's P-5 registration is listed as inactive since Aug 1, 2026 (last P-5 filed Jul 16, 2025).

  • Sales

    Sales over the last 3 months fell to 19% of the 9 months before.

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

See why checks stop on this lease

Production by month

Oil output fell 5% over the last 12 months

  • Oil (bars)
  • Last 12 months
Oil output fell 5% over the last 12 monthsMonthly oil production for SANTERRA, Aug 2023 to Jul 2026. Oil output fell 5% over the last 12 months. 2,200 bbl in the 12 months through Jul 2026, against 2,309 bbl in the 12 months before.Last 12 months: 2,200 bblbbl per month0100200300400500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 5% over the last 12 monthsMonthly oil production for SANTERRA, Aug 2023 to Jul 2026. Oil output fell 5% over the last 12 months. 2,200 bbl in the 12 months through Jul 2026, against 2,309 bbl in the 12 months before.Last 12 monthsbbl per month0100200300400500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

No gas disposition reported for this lease

The operator has not reported where the gas went in the months we hold.

Who has run this lease

The operator changed 2 times, most recently in Oct 2025

Operators of this lease over timeDallas Petroleum Group, LLC, Jan 2020 to May 2023; Jalapeno Operating Company, LLC, Jun 2023 to Sep 2025; Rattlesnake Operating Co, LLC, Oct 2025 to Jul 20262020202120222023202420252026Changed Jun 2023Changed Oct 2025Dallas Petroleum Group, LLCJan 2020 to May 2023Jalapeno Operating Company, L…Jun 2023 to Sep 2025Rattlesnake Operating Co, LLCOct 2025 to now
Operators of this lease over timeDallas Petroleum Group, LLC, Jan 2020 to May 2023; Jalapeno Operating Company, LLC, Jun 2023 to Sep 2025; Rattlesnake Operating Co, LLC, Oct 2025 to Jul 20262020202120222023202420252026Changed Jun 2023Changed Oct 2025Dallas Petroleum Group, LLCJan 2020 to May 2023Jalapeno Operating Company, LLCJun 2023 to Sep 2025Rattlesnake Operating Co, LLCOct 2025 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

10 wells on this lease

Wells on SANTERRA
API numberWell no.Status
42-131-3639012Active
42-131-392441Shut-in
42-131-392494Shut-in
42-131-392555Active
42-131-392567Shut-in
42-131-392578Shut-in
42-131-39258I 1Shut-in
42-131-392879Active
42-131-3937211Active
42-131-3942313Shut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Gulfmark Energy, Inc.OilGathers100Oct 13, 2025–
Genesis Crude Oil, L.p.OilGathers50Jun 1, 2023Oct 13, 2025
Gulfmark Energy, Inc.OilGathers50Jun 1, 2023Oct 13, 2025
Genesis Crude Oil, L.p.OilGathers100Mar 1, 2013Jun 1, 2023

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

Who buys my oilOil price check

10 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 10 and 220 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    10 wells are listed on this lease

    Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

  • Worth asking

    A Rule 37 case is listed

    The RRC permit records list a Rule 37 case. This does not establish your royalty share. Ask for the permit and unit plat for your well.

Check your decimal on this lease
Permits for Santerra
API numberWell no.Acreson the permit
42-131-363901210
42-131-3942313220
42-131-3937211160
42-131-392879160
42-131-392567160
42-131-392578160
42-131-39258I 1160
42-131-392555160
42-131-392494160
42-131-392441160

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for SANTERRA
MonthOil producedbblOil soldbblWTI$/bblHenry Hub$/MMBtu
Jul 2026Rattlesnake Operating180$80.46$2.89
Jun 2026Rattlesnake Operating127143$84.81$3.15
May 2026Rattlesnake Operating160$102.13$2.94
Apr 2026Rattlesnake Operating144144$100.32$2.77
Mar 2026Rattlesnake Operating129144$91.38$3.04
Feb 2026Rattlesnake Operating172157$64.51$3.62
Jan 2026Rattlesnake Operating213213$60.04$7.72
Dec 2025Rattlesnake Operating289309$57.97$4.26
Nov 2025Rattlesnake Operating337318$60.06$3.79
Oct 2025Rattlesnake Operating426450$60.89$3.19
Sep 2025Jalapeno Operating43157$63.96$2.97
Aug 2025Jalapeno Operating286323$64.86$2.91
Jul 2025Jalapeno Operating321159$68.39$3.20
Jun 2025Jalapeno Operating00$68.17$3.02
May 2025Jalapeno Operating00$62.17$3.12
Apr 2025Jalapeno Operating00$63.54$3.42
Mar 2025Jalapeno Operating171299$68.24$4.12
Feb 2025Jalapeno Operating419303$71.53$4.19
Jan 2025Jalapeno Operating227578$75.74$4.13
Dec 2024Jalapeno Operating3300$70.12$3.01
Nov 2024Jalapeno Operating133154$69.95$2.12
Oct 2024Jalapeno Operating97155$71.99$2.20
Sep 2024Jalapeno Operating357311$70.24$2.28
Aug 2024Jalapeno Operating254311$76.68$1.99
Jul 2024Jalapeno Operating284283$81.80$2.07
Jun 2024Jalapeno Operating00$79.77$2.54
May 2024Jalapeno Operating00$80.02$2.12
Apr 2024Jalapeno Operating00$85.35$1.60
Mar 2024Jalapeno Operating00$81.28$1.49
Feb 2024Jalapeno Operating00$77.25$1.72
Jan 2024Jalapeno Operating00$74.15$3.18
Dec 2023Jalapeno Operating00$71.90$2.52
Nov 2023Jalapeno Operating00$77.69$2.71
Oct 2023Jalapeno Operating00$85.64$2.98
Sep 2023Jalapeno Operating00$89.43$2.64
Aug 2023Jalapeno Operating00$81.39$2.58

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

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Nearby

This lease belongs to

OperatorRattlesnake Operating Co, LLCFieldLopez, North (Lopez)CountyDuval County

Rattlesnake Operating Co, LLC in Duval County

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Lopez, North (Lopez) field

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