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Texas oil lease

Producing

AMMANN EFS

Ammann Efs is an oil lease in Dimmit County, Texas, operated by Atlas Operating LLC in the Briscoe Ranch (Eagleford) field.

2 wells

4,202bbl oil, last 12 months−52% vs prior year
Operator
Atlas Operating LLC
County
Dimmit County
Field
Briscoe Ranch (Eagleford)
RRC lease
01-18374

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Where it sits

This county

Dimmit CountyDimmitLa SalleZavalaFrioMaverickDimmit County
Dimmit County
Gas, last 12 months
196,923 mcf
Oil in Jun 2026
454 bbl

Production by month

Oil output fell 52% over the last 12 months

Jul 2026 was not reported.

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 52% over the last 12 monthsMonthly oil production and gas for AMMANN EFS, Aug 2023 to Jul 2026. Oil output fell 52% over the last 12 months. 4,133 bbl in the 12 months through Jul 2026, against 8,549 bbl in the 12 months before.Last 12 months: 4,133 bblbbl per monthmcf per month0050010k1,00020k1,50030k2,00040kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 52% over the last 12 monthsMonthly oil production and gas for AMMANN EFS, Aug 2023 to Jul 2026. Oil output fell 52% over the last 12 months. 4,133 bbl in the 12 months through Jul 2026, against 8,549 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0050010k1,00020k1,50030k2,00040kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

89% of the gas went to a transmission line in the last 12 months

  • Transmission line (2)
  • Lease fuel (1)
89% of the gas went to a transmission line in the last 12 monthsShare of AMMANN EFS gas by disposition code each month, Aug 2023 to Jul 2026. 89% 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%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
89% of the gas went to a transmission line in the last 12 monthsShare of AMMANN EFS gas by disposition code each month, Aug 2023 to Jul 2026. 89% of the gas went to a transmission line in the last 12 months.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    89% · 174,809 mcf

  • Lease fuel (1)

    11% · 22,114 mcf

2 wells on this lease

Wells on AMMANN EFS
API numberWell no.Status
42-127-369242HAActive
42-127-369261HAActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Plains Marketing, L.p.OilGathers90Feb 1, 2026–
Gulfmark Energy, Inc.OilGathers10Feb 1, 2026–
Howard Marketing, LLCCasinghead gasBuys100Feb 20, 2015–
Texas Pipeline LLCCasinghead gasGathers100Feb 20, 2015–
Ace Gathering, Inc.OilGathers50Oct 1, 2020Feb 1, 2026
Shell Trading (Us) CompanyOilGathers50Oct 1, 2020Feb 1, 2026
Concord Crude Oil Marketing LLCOilGathers100Aug 1, 2018Oct 1, 2020

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

Who buys my oilOil price check

1,279.79 acres on the newest permit

Permits for Ammann Efs
API numberWell no.Acreson the permit
42-127-369261HA1,279.79
42-127-369242HA1,279.79

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for AMMANN EFS
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026No report filed–––––$80.46$2.89
Jun 202645453513,89411,8640$84.81$3.15
May 2026235019,30816,4050$102.13$2.94
Apr 202673650815,43014,6390$100.32$2.77
Mar 20262166258,2018,2010$91.38$3.04
Feb 20264031769,2158,1770$64.51$3.62
Jan 202637735412,48811,2160$60.04$7.72
Dec 202540351631,24428,6960$57.97$4.26
Nov 20259415827,97725,6620$60.06$3.79
Oct 2025142011,1929,8720$60.89$3.19
Sep 202534034723,38321,7160$63.96$2.97
Aug 202573354724,11518,0240$64.86$2.91
Jul 2025692304763370$68.39$3.20
Jun 20253483628,1725,9250$68.17$3.02
May 202596693115,10013,0950$62.17$3.12
Apr 202590864614,77013,5460$63.54$3.42
Mar 202576165114,89713,5410$68.24$4.12
Feb 202561888115,19813,5710$71.53$4.19
Jan 20259461,43815,45013,7060$75.74$4.13
Dec 20241,5091,24017,52915,8280$70.12$3.01
Nov 202468771216,60515,1470$69.95$2.12
Oct 20249231,04714,16212,4490$71.99$2.20
Sep 202420135411,2039,3900$70.24$2.28
Aug 202461335311,3239,6220$76.68$1.99
Jul 202492281014,56913,1250$81.80$2.07
Jun 20241,4991,4005,9354,4910$79.77$2.54
May 202437174110,2548,6350$80.02$2.12
Apr 202452651910,1737,7980$85.35$1.60
Mar 202450334310,5718,4630$81.28$1.49
Feb 20247078674,8563,0740$77.25$1.72
Jan 20248905076,9224,9550$74.15$3.18
Dec 20238679519,0807,1920$71.90$2.52
Nov 20231,2431,03619,50417,5390$77.69$2.71
Oct 20231,00094113,88512,1000$85.64$2.98
Sep 20231,05785515,42013,5960$89.43$2.64
Aug 20239801,01716,18714,5290$81.39$2.58

No report filed

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

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This lease belongs to

OperatorAtlas Operating LLCFieldBriscoe Ranch (Eagleford)CountyDimmit County

Atlas Operating LLC in Dimmit County

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Briscoe Ranch (Eagleford) field

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