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HALFMANN LEASE 21

Halfmann Lease 21 is an oil lease in Glasscock County, Texas, operated by Atropos Exploration Company in the Spraberry (Trend Area) field.

1 well

1,723bbl oil, last 12 months−41% vs prior year
Operator
Atropos Exploration Company
County
Glasscock County
Field
Spraberry (Trend Area)
RRC lease
08-40338

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Where it sits

This county

Glasscock CountyGlasscockMitchellMartinSterlingMidlandHowardGlasscock County
Glasscock County
Gas, last 12 months
3,872 mcf
Oil in Jul 2026
0 bbl

Checks stopped on this lease?

  • Sales

    No sales reported for the last 3 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 41% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 41% over the last 12 monthsMonthly oil production and gas for HALFMANN LEASE 21, Aug 2023 to Jul 2026. Oil output fell 41% over the last 12 months. 1,723 bbl in the 12 months through Jul 2026, against 2,898 bbl in the 12 months before.Last 12 months: 1,723 bblbbl per monthmcf per month001002002004003006004008005001,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 41% over the last 12 monthsMonthly oil production and gas for HALFMANN LEASE 21, Aug 2023 to Jul 2026. Oil output fell 41% over the last 12 months. 1,723 bbl in the 12 months through Jul 2026, against 2,898 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001002002004003006004008005001,000Jan 24JulJan 25JulJan 26Jul

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 HALFMANN LEASE 21 gas by disposition code each month, Aug 2023 to Jul 2026. 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%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
All of the gas went to a transmission line in the last 12 monthsShare of HALFMANN LEASE 21 gas by disposition code each month, Aug 2023 to Jul 2026. All 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.

1 well on this lease

Wells on HALFMANN LEASE 21
API numberWell no.Status
42-173-324271Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Transoil Marketing, LLCOilGathers100May 1, 2020–
Dcp Operating Company, LPCasinghead gasBuys100Apr 1, 2017–
Dcp Operating Company, LPCasinghead gasGathers100Apr 1, 2017–
Lpc Crude Oil Marketing LLCOilGathers100Jul 1, 2015May 1, 2020

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

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160 acres on the newest permit

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Permits for Halfmann Lease 21
API numberWell no.Acreson the permit
42-173-324271160

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

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36 months, newest first

Ledger for HALFMANN LEASE 21
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202600000$80.46$2.89
Jun 20260017170$84.81$3.15
May 20260017170$102.13$2.94
Apr 20262111863763760$100.32$2.77
Mar 20263253647207200$91.38$3.04
Feb 2026900000$64.51$3.62
Jan 20261133423253250$60.04$7.72
Dec 202523705205200$57.97$4.26
Nov 20252613407007000$60.06$3.79
Oct 20251021842082080$60.89$3.19
Sep 2025001471470$63.96$2.97
Aug 20253843398428420$64.86$2.91
Jul 20252881725585580$68.39$3.20
Jun 20254026815065060$68.17$3.02
May 2025157095950$62.17$3.12
Apr 20253141624494490$63.54$3.42
Mar 20253796853873870$68.24$4.12
Feb 20253261722922920$71.53$4.19
Jan 20253051701961960$75.74$4.13
Dec 20243013312112110$70.12$3.01
Nov 202412219491910$69.95$2.12
Oct 20241241741221220$71.99$2.20
Sep 2024156074740$70.24$2.28
Aug 202424022220$76.68$1.99
Jul 202400000$81.80$2.07
Jun 202400000$79.77$2.54
May 202400000$80.02$2.12
Apr 2024130000$85.35$1.60
Mar 202400000$81.28$1.49
Feb 202400000$77.25$1.72
Jan 202400000$74.15$3.18
Dec 202300000$71.90$2.52
Nov 202300000$77.69$2.71
Oct 20238088880$85.64$2.98
Sep 20231211523513510$89.43$2.64
Aug 20231251703833830$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

OperatorAtropos Exploration CompanyFieldSpraberry (Trend Area)CountyGlasscock County

Atropos Exploration Company in Glasscock County

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Spraberry (Trend Area) field

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