Skip to content
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

9,745mcf gas, last 12 months+1% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-271495

Is your check right?

Check my statement

Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
1,433 bbl
Gas in Jul 2026
1,035 mcf

Production by month

Gas output held steady over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output held steady over the last 12 monthsMonthly gas production and oil for HAVEMAN TRUST 01, Aug 2023 to Jul 2026. Gas output held steady over the last 12 months. 9,745 mcf in the 12 months through Jul 2026, against 9,675 mcf in the 12 months before.Last 12 months: 9,745 mcfmcf per monthbbl per month00500501,0001001,5001502,000200Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output held steady over the last 12 monthsMonthly gas production and oil for HAVEMAN TRUST 01, Aug 2023 to Jul 2026. Gas output held steady over the last 12 months. 9,745 mcf in the 12 months through Jul 2026, against 9,675 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month00500501,0001001,5001502,000200Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

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

All 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. All 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
All 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. All 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.

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 HAVEMAN TRUST 01
API numberWell no.Status
42-255-3300802HActive

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

595.96 acres on the newest permit

Check your decimal on this lease
Permits for Haveman Trust 01
API numberWell no.Acreson the permit
42-255-3300802H595.96

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 Oil1931931,0351,0350$80.46$2.89
Jun 2026Marathon Oil70705435430$84.81$3.15
May 2026Marathon Oil1301308428420$102.13$2.94
Apr 2026Marathon Oil1291299019010$100.32$2.77
Mar 2026Marathon Oil1181188858850$91.38$3.04
Feb 2026Marathon Oil93937117110$64.51$3.62
Jan 2026Marathon Oil1321329229220$60.04$7.72
Dec 2025Marathon Oil1171178188180$57.97$4.26
Nov 2025Marathon Oil1281289029020$60.06$3.79
Oct 2025Marathon Oil1021027047040$60.89$3.19
Sep 2025Marathon Oil1021026526520$63.96$2.97
Aug 2025Marathon Oil1191198308300$64.86$2.91
Jul 2025Marathon Oil96968008000$68.39$3.20
Jun 2025Marathon Oil1051057797790$68.17$3.02
May 2025Marathon Oil1271279399390$62.17$3.12
Apr 2025Marathon Oil1021027347340$63.54$3.42
Mar 2025Marathon Oil1491491,1001,1000$68.24$4.12
Feb 2025Marathon Oil1061065255250$71.53$4.19
Jan 2025Marathon Oil1381389549540$75.74$4.13
Dec 2024Marathon Oil1881881,2531,2530$70.12$3.01
Nov 2024Marathon Oil51514394390$69.95$2.12
Oct 2024Marathon Oil1541549519510$71.99$2.20
Sep 2024Marathon Oil1411418848840$70.24$2.28
Aug 2024Marathon Oil75753173170$76.68$1.99
Jul 2024Marathon Oil1501509659650$81.80$2.07
Jun 2024Marathon Oil1421428948940$79.77$2.54
May 2024Marathon Oil1591599719710$80.02$2.12
Apr 2024Marathon Oil1341346546540$85.35$1.60
Mar 2024Marathon Oil1311317097090$81.28$1.49
Feb 2024Marathon Oil1491497587580$77.25$1.72
Jan 2024Marathon Oil1741749279270$74.15$3.18
Dec 2023Marathon Oil1631639979970$71.90$2.52
Nov 2023Marathon Oil1721721,0841,0840$77.69$2.71
Oct 2023Marathon Oil1681689189180$85.64$2.98
Sep 2023Marathon Oil1221226416410$89.43$2.64
Aug 2023Marathon Oil67675255250$81.39$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

How to check your stub against this lease Checks stopped on this lease? See the likely reasons

Do your checks match this lease?

Check my statement

Nearby

This lease belongs to

OperatorMarathon Oil Ef LLCFieldSugarkane (Eagle Ford)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

All Marathon Oil Ef LLC leases →

Sugarkane (Eagle Ford) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km