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KOOPMAN 01

Koopman 01 is a gas well in De Witt County, Texas, operated by Marathon Oil Ef LLC in the De Witt (Eagle Ford Shale) field.

1 well

721mcf gas, last 12 months+88% vs prior year
Operator
Marathon Oil Ef LLC
County
De Witt County
Field
De Witt (Eagle Ford Shale)
RRC lease
02-267753

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Where it sits

This county

De Witt CountyDe WittGoliadWilsonLavacaGonzalesKarnesVictoriaGuadalupeDe Witt County
De Witt County
Oil, last 12 months
699 bbl
Gas in Jul 2026
0 mcf

Checks stopped on this lease?

  • Sales

    No sales reported for the last 7 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 rose 88% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output rose 88% over the last 12 monthsMonthly gas production and oil for KOOPMAN 01, Aug 2023 to Jul 2026. Gas output rose 88% over the last 12 months. 721 mcf in the 12 months through Jul 2026, against 384 mcf in the 12 months before.Last 12 months: 721 mcfmcf per monthbbl per month005050100100150150200200250250Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output rose 88% over the last 12 monthsMonthly gas production and oil for KOOPMAN 01, Aug 2023 to Jul 2026. Gas output rose 88% over the last 12 months. 721 mcf in the 12 months through Jul 2026, against 384 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month005050100100150150200200250250Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

92% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
92% of the gas went to a processing plant in the last 12 monthsShare of KOOPMAN 01 gas by disposition code each month, Aug 2023 to Jul 2026. 92% 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
92% of the gas went to a processing plant in the last 12 monthsShare of KOOPMAN 01 gas by disposition code each month, Aug 2023 to Jul 2026. 92% 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)

    92% · 986 mcf

  • Lease fuel (1)

    7.5% · 80 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 KOOPMAN 01
API numberWell no.Status
42-123-3241701HShut-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–
Ensign Operating LLCCondensateGathers50Jul 22, 2021Mar 1, 2023
Enterprise Crude Oil LLCCondensateGathers25Jul 22, 2021Mar 1, 2023
Enterprise Crude Pipeline LLCCondensateGathers25Jul 22, 2021Mar 1, 2023
Ensign Operating LLCGas-well gasGathers50Jul 22, 2021Mar 1, 2023
Enterprise Products Operating LLCGas-well gasGathers50Jul 22, 2021Mar 1, 2023
Enterprise Products Operating LLCGas-well gasBuys100Jul 22, 2021Mar 1, 2023

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

Who buys my oilOil price check

673.85 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 Koopman 01
API numberWell no.Acreson the permit
42-123-3241701H673.85

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 KOOPMAN 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 Oil00000$100.32$2.77
Mar 2026Marathon Oil00000$91.38$3.04
Feb 2026Marathon Oil00000$64.51$3.62
Jan 2026Marathon Oil00000$60.04$7.72
Dec 2025Marathon Oil441721550$57.97$4.26
Nov 2025Marathon Oil213213105960$60.06$3.79
Oct 2025Marathon Oil1411411691570$60.89$3.19
Sep 2025Marathon Oil2252252021870$63.96$2.97
Aug 2025Marathon Oil11611673690$64.86$2.91
Jul 2025Marathon Oil1112110$68.39$3.20
Jun 2025Marathon Oil1010870$68.17$3.02
May 2025Marathon Oil0091850$62.17$3.12
Apr 2025Marathon Oil17171391300$63.54$3.42
Mar 2025Marathon Oil1135330$68.24$4.12
Feb 2025Marathon Oil1112110$71.53$4.19
Jan 2025Marathon Oil151548450$75.74$4.13
Dec 2024Marathon Oil171739370$70.12$3.01
Nov 2024Marathon Oil00000$69.95$2.12
Oct 2024Marathon Oil00000$71.99$2.20
Sep 2024Marathon Oil3838000$70.24$2.28
Aug 2024Marathon Oil55000$76.68$1.99
Jul 2024Marathon Oil2727000$81.80$2.07
Jun 2024Marathon Oil00000$79.77$2.54
May 2024Marathon Oil00000$80.02$2.12
Apr 2024Marathon Oil00000$85.35$1.60
Mar 2024Marathon Oil00000$81.28$1.49
Feb 2024Marathon Oil00000$77.25$1.72
Jan 2024Marathon Oil151583830$74.15$3.18
Dec 2023Marathon Oil00000$71.90$2.52
Nov 2023Marathon Oil101026260$77.69$2.71
Oct 2023Marathon Oil2121550$85.64$2.98
Sep 2023Marathon Oil00000$89.43$2.64
Aug 2023Marathon Oil00110$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 LLCFieldDe Witt (Eagle Ford Shale)CountyDe Witt County

Marathon Oil Ef LLC in De Witt County

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De Witt (Eagle Ford Shale) field

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