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Texas gas well

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SIENKIEWICS UNIT

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

1 well

0mcf gas, last 12 months
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-262109

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas in Jul 2026
0 mcf
Reporting since
Jan 2020

Checks stopped on this lease?

  • Sales

    No sales reported for the last 12 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

No gas produced in the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
No gas produced in the last 12 monthsMonthly gas production and oil for SIENKIEWICS UNIT, Aug 2023 to Jul 2026. No gas produced in the last 12 months. The last month with output was Nov 2024, at 1,166 mcf.Last 12 months: 0 mcfmcf per monthbbl per month001,0002002,0004003,0006004,000800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
No gas produced in the last 12 monthsMonthly gas production and oil for SIENKIEWICS UNIT, Aug 2023 to Jul 2026. No gas produced in the last 12 months. The last month with output was Nov 2024, at 1,166 mcf.Last 12 monthsmcf per monthbbl per month001,0002002,0004003,0006004,000800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Jan 2024 the lease's gas goes to a processing plant instead of lease fuel

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Jan 2024 the lease's gas goes to a processing plant instead of lease fuelShare of SIENKIEWICS UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Jan 2024 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%Jan 2024: fuel to plantOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Jan 2024 the lease's gas goes to a processing plant instead of lease fuelShare of SIENKIEWICS UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Jan 2024 the lease's gas goes to a processing plant instead of lease fuel.Share of gas by disposition code0%50%100%Jan 24: fuel to plantJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    73% · 11,132 mcf

  • Lease fuel (1)

    26% · 3,975 mcf

  • Flared (4)

    0.7% · 104 mcf

0.7% of the gas flared in the last 12 months. No month above 3%.

1 well on this lease

Wells on SIENKIEWICS UNIT
API numberWell no.Status
42-255-317751HShut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Pilot Travel Centers LLCCondensateGathers50Jun 1, 2020–
Reynolds Energy Transport LLCCondensateGathers50Jul 1, 2022–
Marathon Oil Ef LLCGas-well gasBuys100Jun 1, 2020–
Marathon Oil Ef LLCGas-well gasGathers100Jun 1, 2020–
Gulfmark Energy, Inc.CondensateGathers50Jun 1, 2020Jul 1, 2022
Gulfmark Energy, Inc.CondensateGathers70Dec 1, 2016Jun 1, 2020
Permian Crude Transport, LPCondensateGathers10Dec 1, 2016Jun 1, 2020
Shell Trading (Us) CompanyCondensateGathers10Dec 1, 2016Jun 1, 2020
Statewide Crude Inc.CondensateGathers10Dec 1, 2016Jun 1, 2020
Marathon Oil CompanyGas-well gasGathers100Dec 1, 2016Jun 1, 2020

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

Who buys my oilOil price check

821.33 acres on the newest permit

Check your decimal on this lease
Permits for Sienkiewics Unit
API numberWell no.Acreson the permit
42-255-317751H821.33

SourceRailroad Commission drilling permits, Oct 3, 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 SIENKIEWICS UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202600000$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 2024001,1669137$69.95$2.12
Oct 2024001,10490414$71.99$2.20
Sep 2024111,2301,0015$70.24$2.28
Aug 2024221,5601,2793$76.68$1.99
Jul 2024113312771$81.80$2.07
Jun 2024001411200$79.77$2.54
May 202400000$80.02$2.12
Apr 202400000$85.35$1.60
Mar 20240142452131$81.28$1.49
Feb 20246686612,5522,2046$77.25$1.72
Jan 20242972922,7292,14726$74.15$3.18
Dec 20231341341,42557316$71.90$2.52
Nov 20231061061,56681316$77.69$2.71
Oct 202397971,1626889$85.64$2.98
Sep 20231021101,0715048$89.43$2.64
Aug 20237397362,9312,13310$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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