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Texas gas well

Shut in

MENSIK 01

Mensik 01 is a gas well in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Sugarkane (Eagle Ford) field.

1 well

635mcf gas, last 12 months−76% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-273139

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
1,098 bbl
Gas in Jul 2026
0 mcf

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.

See why checks stop on this lease

Production by month

Gas output fell 76% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 76% over the last 12 monthsMonthly gas production and oil for MENSIK 01, Aug 2023 to Jul 2026. Gas output fell 76% over the last 12 months. 635 mcf in the 12 months through Jul 2026, against 2,699 mcf in the 12 months before.Last 12 months: 635 mcfmcf per monthbbl per month00200200400400600600800800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 76% over the last 12 monthsMonthly gas production and oil for MENSIK 01, Aug 2023 to Jul 2026. Gas output fell 76% over the last 12 months. 635 mcf in the 12 months through Jul 2026, against 2,699 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month00200200400400600600800800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

97% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
97% of the gas went to a processing plant in the last 12 monthsShare of MENSIK 01 gas by disposition code each month, Aug 2023 to Jul 2026. 97% of the gas went to a processing plant in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
97% of the gas went to a processing plant in the last 12 monthsShare of MENSIK 01 gas by disposition code each month, Aug 2023 to Jul 2026. 97% of the gas went to a processing plant 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.

  • Processing plant (3)

    97% · 1,072 mcf

  • Lease fuel (1)

    3.3% · 37 mcf

Who has run this lease

The operator changed once, most recently in Mar 2023

Operators of this lease over timeEnsign Operating LLC, Jan 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 20262020202120222023202420252026Changed Mar 2023Ensign Operating LLCJan 2020 to Feb 2023Marathon Oil Ef LLCMar 2023 to now
Operators of this lease over timeEnsign Operating LLC, Jan 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 20262020202120222023202420252026Changed Mar 2023Ensign Operating LLCJan 2020 to Feb 2023Marathon Oil Ef LLCMar 2023 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on MENSIK 01
API numberWell no.Status
42-255-3309904HShut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCCondensateGathers50Mar 1, 2023–
Enterprise Crude Pipeline LLCCondensateGathers50Mar 1, 2023–
Marathon Oil Ef LLCGas-well gasBuys100Mar 1, 2023–
Marathon Oil Ef LLCGas-well gasGathers100Mar 1, 2023–
Gulfmark Energy, Inc.CondensateGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCGas-well gasGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCGas-well gasBuys100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCCondensateGathers50Oct 1, 2019Oct 2, 2019
Enterprise Crude Oil LLCCondensateGathers25Oct 1, 2019Oct 2, 2019
Enterprise Crude Pipeline LLCCondensateGathers25Oct 1, 2019Oct 2, 2019

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

Who buys my oilOil price check

704 acres on the newest permit

  • Good to know

    A pooling certificate (P-12) was filed

    Your tract may share its production with neighbors in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one permit.

Check your decimal on this lease
Permits for Mensik 01
API numberWell no.Acreson the permit
42-255-3309904H704

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 MENSIK 01
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil00000$80.46$2.89
Jun 2026Marathon Oil00000$84.81$3.15
May 2026Marathon Oil00000$102.13$2.94
Apr 2026Marathon Oil99330$100.32$2.77
Mar 2026Marathon Oil5523230$91.38$3.04
Feb 2026Marathon Oil00000$64.51$3.62
Jan 2026Marathon Oil797956550$60.04$7.72
Dec 2025Marathon Oil1313880$57.97$4.26
Nov 2025Marathon Oil5765762982920$60.06$3.79
Oct 2025Marathon Oil21221255540$60.89$3.19
Sep 2025Marathon Oil13713754530$63.96$2.97
Aug 2025Marathon Oil67671381350$64.86$2.91
Jul 2025Marathon Oil0060590$68.39$3.20
Jun 2025Marathon Oil00000$68.17$3.02
May 2025Marathon Oil00000$62.17$3.12
Apr 2025Marathon Oil00000$63.54$3.42
Mar 2025Marathon Oil99992021880$68.24$4.12
Feb 2025Marathon Oil747475690$71.53$4.19
Jan 2025Marathon Oil1821821371330$75.74$4.13
Dec 2024Marathon Oil1211215955540$70.12$3.01
Nov 2024Marathon Oil96964003740$69.95$2.12
Oct 2024Marathon Oil94944404100$71.99$2.20
Sep 2024Marathon Oil1101105735350$70.24$2.28
Aug 2024Marathon Oil1501502172020$76.68$1.99
Jul 2024Marathon Oil1671673873620$81.80$2.07
Jun 2024Marathon Oil1651654093840$79.77$2.54
May 2024Marathon Oil0081760$80.02$2.12
Apr 2024Marathon Oil1541546125780$85.35$1.60
Mar 2024Marathon Oil46462222060$81.28$1.49
Feb 2024Marathon Oil36363172920$77.25$1.72
Jan 2024Marathon Oil68682562370$74.15$3.18
Dec 2023Marathon Oil1221223593360$71.90$2.52
Nov 2023Marathon Oil38383222980$77.69$2.71
Oct 2023Marathon Oil1121123763510$85.64$2.98
Sep 2023Marathon Oil31311871750$89.43$2.64
Aug 2023Marathon Oil1281282752580$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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