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Texas oil lease

Producing

SOUTH TEXAS SYNDICATE -A-

South Texas Syndicate -A- is an oil lease in McMullen County, Texas, operated by Caribbean Energy LLC II in the Green Branch (4600) field.

5 wells

1,897bbl oil, last 12 months+2% vs prior year
Operator
Caribbean Energy LLC II
County
McMullen County
Field
Green Branch (4600)
RRC lease
01-06008

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Where it sits

This county

McMullen CountyMcMullenLa SalleAtascosaKarnesFrioLive OakMcMullen County
McMullen County
Oil in Jul 2026
204 bbl
Reporting since
Jan 2020

Checks stopped on this lease?

  • Operator

    Operator changed: Caribbean Energy LLC II took over from Vermillion Production, Inc. in Mar 2026.

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

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Production by month

Oil output held steady over the last 12 months

  • Oil (bars)
  • Last 12 months
Oil output held steady over the last 12 monthsMonthly oil production for SOUTH TEXAS SYNDICATE -A-, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 1,897 bbl in the 12 months through Jul 2026, against 1,863 bbl in the 12 months before.Last 12 months: 1,897 bblbbl per month050100150200250Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output held steady over the last 12 monthsMonthly oil production for SOUTH TEXAS SYNDICATE -A-, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 1,897 bbl in the 12 months through Jul 2026, against 1,863 bbl in the 12 months before.Last 12 monthsbbl per month050100150200250Jan 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 Mar 2026

Operators of this lease over timeTerrafina Energy, LLC, Jan 2020 to Feb 2023; Vermillion Production, Inc., Mar 2023 to Feb 2026; Caribbean Energy LLC II, Mar 2026 to Jul 20262020202120222023202420252026Changed Mar 2023Changed Mar 2026Terrafina Energy, LLCJan 2020 to Feb 2023Vermillion Production, Inc.Mar 2023 to Feb 2026Caribbean Energy LLC IIMar 2026 to now
Operators of this lease over timeTerrafina Energy, LLC, Jan 2020 to Feb 2023; Vermillion Production, Inc., Mar 2023 to Feb 2026; Caribbean Energy LLC II, Mar 2026 to Jul 20262020202120222023202420252026Changed Mar 2023Changed Mar 2026Terrafina Energy, LLCJan 2020 to Feb 2023Vermillion Production, Inc.Mar 2023 to Feb 2026Caribbean Energy LLC IIMar 2026 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

5 wells on this lease

Wells on SOUTH TEXAS SYNDICATE -A-
API numberWell no.Status
42-311-3134511Active
42-311-3145412Active
42-311-3289217Active
42-311-3289316Active
42-311-3291422Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Gulfmark Energy, Inc.OilGathers100Mar 1, 2023–
Sunoco Ptnrs. Mktg.&terminals LPOilGathers100Jul 1, 2016Mar 1, 2023

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

Who buys my oilOil price check

880 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 870 and 880 acres. Use the acres from your own division order for the well you are paid on.

  • 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 South Texas Syndicate -A-
API numberWell no.Acreson the permit
42-311-3291422880
42-311-3145412880
42-311-3134511870
42-311-3289217870
42-311-3289316880

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

Unit decimal checker

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36 months, newest first

Ledger for SOUTH TEXAS SYNDICATE -A-
MonthOil producedbblOil soldbblWTI$/bblHenry Hub$/MMBtu
Jul 2026Caribbean Energy204294$80.46$2.89
Jun 2026Caribbean Energy234157$84.81$3.15
May 2026Caribbean Energy128152$102.13$2.94
Apr 2026Caribbean Energy132169$100.32$2.77
Mar 2026Caribbean Energy129156$91.38$3.04
Feb 2026Vermillion Production,155171$64.51$3.62
Jan 2026Vermillion Production,1180$60.04$7.72
Dec 2025Vermillion Production,175177$57.97$4.26
Nov 2025Vermillion Production,150158$60.06$3.79
Oct 2025Vermillion Production,160147$60.89$3.19
Sep 2025Vermillion Production,151157$63.96$2.97
Aug 2025Vermillion Production,161159$64.86$2.91
Jul 2025Vermillion Production,157150$68.39$3.20
Jun 2025Vermillion Production,145159$68.17$3.02
May 2025Vermillion Production,140156$62.17$3.12
Apr 2025Vermillion Production,133155$63.54$3.42
Mar 2025Vermillion Production,177161$68.24$4.12
Feb 2025Vermillion Production,123150$71.53$4.19
Jan 2025Vermillion Production,152172$75.74$4.13
Dec 2024Vermillion Production,209166$70.12$3.01
Nov 2024Vermillion Production,136170$69.95$2.12
Oct 2024Vermillion Production,127139$71.99$2.20
Sep 2024Vermillion Production,155155$70.24$2.28
Aug 2024Vermillion Production,209162$76.68$1.99
Jul 2024Vermillion Production,161141$81.80$2.07
Jun 2024Vermillion Production,155165$79.77$2.54
May 2024Vermillion Production,174294$80.02$2.12
Apr 2024Vermillion Production,165168$85.35$1.60
Mar 2024Vermillion Production,169173$81.28$1.49
Feb 2024Vermillion Production,143158$77.25$1.72
Jan 2024Vermillion Production,1440$74.15$3.18
Dec 2023Vermillion Production,148166$71.90$2.52
Nov 2023Vermillion Production,137167$77.69$2.71
Oct 2023Vermillion Production,159159$85.64$2.98
Sep 2023Vermillion Production,142163$89.43$2.64
Aug 2023Vermillion Production,231170$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

OperatorCaribbean Energy LLC IIFieldGreen Branch (4600)CountyMcMullen County

Caribbean Energy LLC II in McMullen County

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Green Branch (4600) field

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