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Texas gas well

Producing

SIENKIEWICZ UNIT

Sienkiewicz Unit is a gas well in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Sugarkane (Eagle Ford) field.

1 well

32mcf gas, last 12 months
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-277548

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
8 bbl
Gas in Jul 2026
32 mcf

Production by month

Gas output over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output over the last 12 monthsMonthly gas production and oil for SIENKIEWICZ UNIT, Aug 2023 to Jul 2026. Gas output over the last 12 months. 32 mcf in the 12 months through Jul 2026, against 0 mcf in the 12 months before.Last 12 months: 32 mcfmcf per monthbbl per month00100100200200300300400400500500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output over the last 12 monthsMonthly gas production and oil for SIENKIEWICZ UNIT, Aug 2023 to Jul 2026. Gas output over the last 12 months. 32 mcf in the 12 months through Jul 2026, against 0 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month00100100200200300300400400500500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Jul 2026 the lease's gas goes to a processing plant instead of lease fuel

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Jul 2026 the lease's gas goes to a processing plant instead of lease fuelShare of SIENKIEWICZ UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Jul 2026 the lease's gas goes to a processing plant instead of lease fuel.Share of the lease’s gas by disposition code, per month0%50%100%Jul 2026: fuel to plantOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Jul 2026 the lease's gas goes to a processing plant instead of lease fuelShare of SIENKIEWICZ UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Jul 2026 the lease's gas goes to a processing plant instead of lease fuel.Share of gas by disposition code0%50%100%Jul 26: fuel to plantJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Lease fuel (1)

    93% · 996 mcf

  • Processing plant (3)

    6.0% · 64 mcf

  • Flared (4)

    1.4% · 15 mcf

1.4% of the gas flared in the 5 months reported. No month above 3%.

1 well on this lease

Wells on SIENKIEWICZ UNIT
API numberWell no.Status
42-255-3406211HShut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCCondensateGathers20Jul 1, 2022–
Harvest Midstream CompanyCondensateGathers20Jul 1, 2022–
Plains Pipeline L.p.CondensateGathers20Jul 1, 2022–
Reynolds Energy Transport LLCCondensateGathers20Jul 1, 2022–
Trafigura Trading LLCCondensateGathers20Jul 1, 2022–
Marathon Oil Ef LLCGas-well gasBuys100Apr 30, 2015–
Marathon Oil Ef LLCGas-well gasGathers100Apr 30, 2015–
Enterprise Crude Oil LLCCondensateGathers5Sep 1, 2018Jul 1, 2022
Gulfmark Energy, Inc.CondensateGathers5Sep 1, 2018Jul 1, 2022
Harvest Midstream CompanyCondensateGathers15Sep 1, 2018Jul 1, 2022
Plains Pipeline L.p.CondensateGathers70Sep 1, 2018Jul 1, 2022
Trafigura Trading LLCCondensateGathers5Sep 1, 2018Jul 1, 2022

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

Who buys my oilOil price check

764.49 acres on the newest permit

Check your decimal on this lease
Permits for Sienkiewicz Unit
API numberWell no.Acreson the permit
42-255-3406211H764.49

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

Unit decimal checker

What ConocoPhillips told investors it received

Marathon Oil Ef LLC is linked to ConocoPhillips (MRO).
Realized prices reported by ConocoPhillips
QuarterOil$ per bblFiling
Q2 2026$99.40SEC filing
Q1 2026$73.47SEC filing
Q3 2025$66.13SEC filing
Q2 2025$64.23SEC filing
Q1 2025$71.65SEC filing

SourceConocoPhillips quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for SIENKIEWICZ UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20268832270$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 202600000$60.04$7.72
Dec 202500000$57.97$4.26
Nov 202500000$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 202500000$63.54$3.42
Mar 202500000$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 202400000$71.99$2.20
Sep 202400000$70.24$2.28
Aug 202400000$76.68$1.99
Jul 202400000$81.80$2.07
Jun 202400000$79.77$2.54
May 202400000$80.02$2.12
Apr 202400000$85.35$1.60
Mar 202400000$81.28$1.49
Feb 202400000$77.25$1.72
Jan 202400000$74.15$3.18
Dec 202301000$71.90$2.52
Nov 202329324101$77.69$2.71
Oct 202325224820804$85.64$2.98
Sep 2023171833705$89.43$2.64
Aug 20233938457375$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

OperatorMarathon Oil Ef LLCFieldSugarkane (Eagle Ford)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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Sugarkane (Eagle Ford) field

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