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Royalty Clerk

Texas gas well

Producing

HAVEMAN TRUST 01

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

1 well

73,800mcf gas, last 12 months+17% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-289836

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
2,824 bbl
Gas in Jul 2026
2,191 mcf

Production by month

Gas output rose 17% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output rose 17% over the last 12 monthsMonthly gas production and oil for HAVEMAN TRUST 01, Aug 2023 to Jul 2026. Gas output rose 17% over the last 12 months. 73,800 mcf in the 12 months through Jul 2026, against 63,016 mcf in the 12 months before.Last 12 months: 73,800 mcfmcf per monthbbl per month005,00010010k20015k30020k40025k500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output rose 17% over the last 12 monthsMonthly gas production and oil for HAVEMAN TRUST 01, Aug 2023 to Jul 2026. Gas output rose 17% over the last 12 months. 73,800 mcf in the 12 months through Jul 2026, against 63,016 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month005,00010010k20015k30020k40025k500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

94% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
94% of the gas went to a processing plant in the last 12 monthsShare of HAVEMAN TRUST 01 gas by disposition code each month, Aug 2023 to Jul 2026. 94% 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
94% of the gas went to a processing plant in the last 12 monthsShare of HAVEMAN TRUST 01 gas by disposition code each month, Aug 2023 to Jul 2026. 94% 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)

    94% · 80,359 mcf

  • Lease fuel (1)

    5.7% · 4,878 mcf

Who has run this lease

The operator changed once, most recently in Mar 2023

Operators of this lease over timeEnsign Operating LLC, Mar 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 2026202120222023202420252026Changed Mar 2023Ensign Operating LLCMar 2020 to Feb 2023Marathon Oil Ef LLCMar 2023 to now
Operators of this lease over timeEnsign Operating LLC, Mar 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 2026202120222023202420252026Changed Mar 2023Ensign Operating LLCMar 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 HAVEMAN TRUST 01
API numberWell no.Status
42-255-367985HRActive

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 LLCCondensateGathers50Mar 20, 2020Mar 1, 2023
Enterprise Crude Oil LLCCondensateGathers25Mar 20, 2020Mar 1, 2023
Enterprise Crude Pipeline LLCCondensateGathers25Mar 20, 2020Mar 1, 2023
Ensign Operating LLCGas-well gasGathers50Mar 20, 2020Mar 1, 2023
Enterprise Products Operating LLCGas-well gasGathers50Mar 20, 2020Mar 1, 2023
Enterprise Products Operating LLCGas-well gasBuys100Mar 20, 2020Mar 1, 2023

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

Who buys my oilOil price check

595.96 acres on the newest permit

  • Worth asking

    A Rule 37 case is listed

    The RRC permit records list a Rule 37 case. This does not establish your royalty share. Ask for the permit and unit plat for your well.

Check your decimal on this lease
Permits for Haveman Trust 01
API numberWell no.Acreson the permit
42-255-367985HR595.96

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 HAVEMAN TRUST 01
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil2292292,1912,0270$80.46$2.89
Jun 2026Marathon Oil2412412,3202,1330$84.81$3.15
May 2026Marathon Oil2712712,3002,0890$102.13$2.94
Apr 2026Marathon Oil2572572,4692,2730$100.32$2.77
Mar 2026Marathon Oil1801802,2712,1260$91.38$3.04
Feb 2026Marathon Oil2872874,0403,8650$64.51$3.62
Jan 2026Marathon Oil00000$60.04$7.72
Dec 2025Marathon Oil1411415,5665,2030$57.97$4.26
Nov 2025Marathon Oil27927912,73111,9870$60.06$3.79
Oct 2025Marathon Oil31131115,63714,7400$60.89$3.19
Sep 2025Marathon Oil29329312,76412,1170$63.96$2.97
Aug 2025Marathon Oil33533511,51110,9120$64.86$2.91
Jul 2025Marathon Oil28928911,43710,8870$68.39$3.20
Jun 2025Marathon Oil28028011,04610,4960$68.17$3.02
May 2025Marathon Oil3043047,2026,8180$62.17$3.12
Apr 2025Marathon Oil3103106,6716,3550$63.54$3.42
Mar 2025Marathon Oil4844842,9532,7830$68.24$4.12
Feb 2025Marathon Oil2932935,0014,7130$71.53$4.19
Jan 2025Marathon Oil3393393,5483,3240$75.74$4.13
Dec 2024Marathon Oil3413413,1192,9620$70.12$3.01
Nov 2024Marathon Oil3183182,9652,8230$69.95$2.12
Oct 2024Marathon Oil3603603,2073,0160$71.99$2.20
Sep 2024Marathon Oil2902902,7732,6440$70.24$2.28
Aug 2024Marathon Oil3133133,0942,9840$76.68$1.99
Jul 2024Marathon Oil3613613,4693,3530$81.80$2.07
Jun 2024Marathon Oil3713713,3253,2140$79.77$2.54
May 2024Marathon Oil3763763,8353,7080$80.02$2.12
Apr 2024Marathon Oil3843843,6923,5820$85.35$1.60
Mar 2024Marathon Oil3573573,5453,4330$81.28$1.49
Feb 2024Marathon Oil2962962,7862,7040$77.25$1.72
Jan 2024Marathon Oil3173173,3563,2720$74.15$3.18
Dec 2023Marathon Oil3203203,7113,6370$71.90$2.52
Nov 2023Marathon Oil2372372,9672,9090$77.69$2.71
Oct 2023Marathon Oil3293293,5573,4510$85.64$2.98
Sep 2023Marathon Oil3523524,9054,8070$89.43$2.64
Aug 2023Marathon Oil3653653,3393,2540$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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