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Texas gas well

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SHIRLEY STEFFEK

Shirley Steffek is a gas well in Lavaca County, Texas, operated by Mascot Oil Company in the Breslau (Wilcox 8395) field.

1 well

1,317mcf gas, last 12 months−33% vs prior year
Operator
Mascot Oil Company
County
Lavaca County
Field
Breslau (Wilcox 8395)
RRC lease
02-286197

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Where it sits

This county

Lavaca CountyLavacaGonzalesFayetteCaldwellDe WittAustinWhartonColoradoJacksonLavaca County
Lavaca County
Oil, last 12 months
197 bbl
Gas in Jun 2026
0 mcf

Checks stopped on this lease?

  • Sales

    No sales reported for the last 8 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

Gas output fell 33% over the last 12 months

Jul 2026 was not reported.

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 33% over the last 12 monthsMonthly gas production and oil for SHIRLEY STEFFEK, Aug 2023 to Jul 2026. Gas output fell 33% over the last 12 months. 1,317 mcf in the 12 months through Jul 2026, against 1,964 mcf in the 12 months before.Last 12 months: 1,317 mcfmcf per monthbbl per month00500501,0001001,5001502,000200Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 33% over the last 12 monthsMonthly gas production and oil for SHIRLEY STEFFEK, Aug 2023 to Jul 2026. Gas output fell 33% over the last 12 months. 1,317 mcf in the 12 months through Jul 2026, against 1,964 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month00500501,0001001,5001502,000200Jan 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 9 months reported

All of the gas went to a transmission line in the 9 months reportedShare of SHIRLEY STEFFEK gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a transmission line in the 9 months reported.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 9 months reportedShare of SHIRLEY STEFFEK gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a transmission line in the 9 months reported.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 SHIRLEY STEFFEK
API numberWell no.Status
42-285-340291Shut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Dks Transport LLCCondensateGathers100Jul 11, 2018
Dcp Operating Company, LPGas-well gasBuys100Jul 11, 2018
Dcp Operating Company, LPGas-well gasGathers100Jul 11, 2018

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

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80 acres on the newest permit

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Permits for Shirley Steffek
API numberWell no.Acreson the permit
42-285-34029180

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

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36 months, newest first

Ledger for SHIRLEY STEFFEK
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026No report filed–––––$80.46$2.89
Jun 202600000$84.81$3.15
May 202600000$102.13$2.94
Apr 202600000$100.32$2.77
Mar 202600000$91.38$3.04
Feb 202600000$64.51$3.62
Jan 20261440000$60.04$7.72
Dec 202500000$57.97$4.26
Nov 20255301,3171,3170$60.06$3.79
Oct 202500000$60.89$3.19
Sep 202500000$63.96$2.97
Aug 202500000$64.86$2.91
Jul 202500000$68.39$3.20
Jun 202500000$68.17$3.02
May 202500000$62.17$3.12
Apr 2025001,1931,1930$63.54$3.42
Mar 2025210000$68.24$4.12
Feb 202500000$71.53$4.19
Jan 202500000$75.74$4.13
Dec 202400000$70.12$3.01
Nov 202400000$69.95$2.12
Oct 2024001671670$71.99$2.20
Sep 20240025250$70.24$2.28
Aug 2024005795790$76.68$1.99
Jul 202400000$81.80$2.07
Jun 202400000$79.77$2.54
May 2024003583580$80.02$2.12
Apr 202440052520$85.35$1.60
Mar 20247201,1781,1780$81.28$1.49
Feb 202400000$77.25$1.72
Jan 202400000$74.15$3.18
Dec 2023180000$71.90$2.52
Nov 2023001,4761,4760$77.69$2.71
Oct 202300000$85.64$2.98
Sep 202300000$89.43$2.64
Aug 202300000$81.39$2.58

No report filed

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

OperatorMascot Oil CompanyFieldBreslau (Wilcox 8395)CountyLavaca County

Mascot Oil Company in Lavaca County

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Breslau (Wilcox 8395) field

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