Skip to content
Royalty Clerk

Texas oil lease

Producing

HIERHOLZER-HEDTKE UNIT

Hierholzer-Hedtke Unit is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

3 wells

9,414bbl oil, last 12 months−40% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-10307

Is your check right?

Check my statement

Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
8,174 mcf
Oil in Jul 2026
6,775 bbl

Production by month

Oil output fell 40% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 40% over the last 12 monthsMonthly oil production and gas for HIERHOLZER-HEDTKE UNIT, Aug 2023 to Jul 2026. Oil output fell 40% over the last 12 months. 9,414 bbl in the 12 months through Jul 2026, against 15,783 bbl in the 12 months before.Last 12 months: 9,414 bblbbl per monthmcf per month002,0002,0004,0004,0006,0006,0008,0008,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 40% over the last 12 monthsMonthly oil production and gas for HIERHOLZER-HEDTKE UNIT, Aug 2023 to Jul 2026. Oil output fell 40% over the last 12 months. 9,414 bbl in the 12 months through Jul 2026, against 15,783 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,0002,0004,0004,0006,0006,0008,0008,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

90% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
90% of the gas went to a processing plant in the last 12 monthsShare of HIERHOLZER-HEDTKE UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 90% 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
90% of the gas went to a processing plant in the last 12 monthsShare of HIERHOLZER-HEDTKE UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 90% 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)

    90% · 13,894 mcf

  • Lease fuel (1)

    9.9% · 1,529 mcf

  • Flared (4)

    0.5% · 73 mcf

0.5% of the gas flared in the last 12 months. No month above 3%.

3 wells on this lease

Wells on HIERHOLZER-HEDTKE UNIT
API numberWell no.Status
42-255-325821HShut-in
42-255-331342HActive
42-255-331353HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers20Jul 1, 2022–
Genesis Crude Oil, L.p.OilGathers20Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers20Jul 1, 2022–
Shell Trading (Us) CompanyOilGathers20Jul 25, 2013–
Statewide Crude Inc.OilGathers20Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Sep 27, 2012–
Marathon Oil Ef LLCCasinghead gasGathers100Sep 27, 2012–
Enterprise Crude Oil LLCOilGathers10Jul 25, 2013Jul 1, 2022
Genesis Crude Oil, L.p.OilGathers50Jul 25, 2013Jul 1, 2022
Gulfmark Energy, Inc.OilGathers10Sep 27, 2012Jul 1, 2022
Statewide Crude Inc.OilGathers10Jul 25, 2013Jul 1, 2022

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

Who buys my oilOil price check

332.42 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 326.64 and 332.42 acres. Use the acres from your own division order for the well you are paid on.

Check your decimal on this lease
Permits for Hierholzer-Hedtke Unit
API numberWell no.Acreson the permit
42-255-331342H332.42
42-255-331353H332.42
42-255-325821H326.64

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 HIERHOLZER-HEDTKE UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20266,7756,7425,4974,83323$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 2026005594972$60.04$7.72
Dec 202500000$57.97$4.26
Nov 202503000$60.06$3.79
Oct 20253093162732461$60.89$3.19
Sep 20251,1841,1829708844$63.96$2.97
Aug 20251,1461,14887578811$64.86$2.91
Jul 20251,2331,2318717974$68.39$3.20
Jun 20251,2251,2248377596$68.17$3.02
May 20251,3001,2989188327$62.17$3.12
Apr 20251,1871,1897997273$63.54$3.42
Mar 20251,5011,5029598653$68.24$4.12
Feb 20251,5631,5711,3281,2003$71.53$4.19
Jan 20252,1402,1361,6101,4666$75.74$4.13
Dec 20242,2862,2811,6221,4863$70.12$3.01
Nov 20241,4211,4201,1521,0593$69.95$2.12
Oct 20241,5451,5401,1431,0603$71.99$2.20
Sep 20243823813283041$70.24$2.28
Aug 202403000$76.68$1.99
Jul 20246957024844481$81.80$2.07
Jun 20242,2612,2641,3541,2532$79.77$2.54
May 20242,1822,1771,5761,4613$80.02$2.12
Apr 20241,8101,8091,4021,26313$85.35$1.60
Mar 20241,4561,4491,3491,2445$81.28$1.49
Feb 202403000$77.25$1.72
Jan 20247187236636292$74.15$3.18
Dec 20231,9571,9621,5001,4245$71.90$2.52
Nov 20231,1011,0941,0519965$77.69$2.71
Oct 20231,8861,8932,1062,0072$85.64$2.98
Sep 20231,7981,7921,9471,8542$89.43$2.64
Aug 20231,7751,7761,7661,6752$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 LLCFieldEagleville (Eagle Ford-2)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-2) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km