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Texas oil lease

Producing

CULBERSON-HUGHES UNIT

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

4 wells

11,815bbl oil, last 12 months−2% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-11041

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
24,423 mcf
Oil in Jul 2026
624 bbl

Production by month

Oil output held steady over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output held steady over the last 12 monthsMonthly oil production and gas for CULBERSON-HUGHES UNIT, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 11,815 bbl in the 12 months through Jul 2026, against 12,072 bbl in the 12 months before.Last 12 months: 11,815 bblbbl per monthmcf per month005002,5001,0005,0001,5007,5002,00010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output held steady over the last 12 monthsMonthly oil production and gas for CULBERSON-HUGHES UNIT, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 11,815 bbl in the 12 months through Jul 2026, against 12,072 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005002,5001,0005,0001,5007,5002,00010kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel

Flaring peaked at 4.7% of the gas in Sep 2025.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of CULBERSON-HUGHES UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.7% of the gas in Sep 2025.Share of the lease’s gas by disposition code, per month0%50%100%Mar 2024: fuel to plantFlared 4.7%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of CULBERSON-HUGHES UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.7% of the gas in Sep 2025.Share of gas by disposition code0%50%100%Mar 24: fuel to plantFlared 4.7%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    71% · 17,254 mcf

  • Lease fuel (1)

    28% · 6,846 mcf

  • Flared (4)

    1.3% · 323 mcf

1.3% of the gas flared in the last 12 months. One month above 3%.

4 wells on this lease

Wells on CULBERSON-HUGHES UNIT
API numberWell no.Status
42-255-34098301HActive
42-255-351242HActive
42-255-351253HActive
42-255-351264HActive

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–
Harvest Midstream CompanyOilGathers20Jul 1, 2022–
Plains Pipeline L.p.OilGathers20Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers20Jul 1, 2022–
Trafigura Trading LLCOilGathers20Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Apr 5, 2015–
Marathon Oil Ef LLCCasinghead gasGathers100Apr 5, 2015–
Enterprise Crude Oil LLCOilGathers10Sep 6, 2018Jul 1, 2022
Gulfmark Energy, Inc.OilGathers10Sep 6, 2018Jul 1, 2022
Plains Pipeline L.p.OilGathers70Sep 1, 2018Jul 1, 2022
Trafigura Trading LLCOilGathers10Sep 6, 2018Jul 1, 2022

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

Who buys my oilOil price check

232.61 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.

  • 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 Culberson-Hughes Unit
API numberWell no.Acreson the permit
42-255-351242H232.61
42-255-351253H232.61
42-255-351264H232.61
42-255-34098301H232.61

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 CULBERSON-HUGHES UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20266246701,7041,1408$80.46$2.89
Jun 20261,4051,3552,7581,93210$84.81$3.15
May 20267257192,6421,81018$102.13$2.94
Apr 20267567641,3629009$100.32$2.77
Mar 20269169681,4571,01514$91.38$3.04
Feb 20261,1901,1581,4711,00728$64.51$3.62
Jan 20261,2461,2752,0341,39845$60.04$7.72
Dec 20251,5921,5582,9632,19618$57.97$4.26
Nov 20251,1581,1522,3261,74511$60.06$3.79
Oct 20257937881,5021,13340$60.89$3.19
Sep 20258698402,0501,47397$63.96$2.97
Aug 20255415532,1541,50525$64.86$2.91
Jul 20257467553,6712,44313$68.39$3.20
Jun 20251,3281,3614,8733,31622$68.17$3.02
May 20251,0741,0464,4912,98623$62.17$3.12
Apr 20251,1101,1024,1702,75416$63.54$3.42
Mar 20258148103,1762,17511$68.24$4.12
Feb 20257317522,2601,51927$71.53$4.19
Jan 20251,0471,0163,1682,14754$75.74$4.13
Dec 20246686953,6792,48513$70.12$3.01
Nov 20241,0761,0812,5341,73613$69.95$2.12
Oct 20241,2081,2054,1552,87023$71.99$2.20
Sep 20241,2521,2363,8252,6049$70.24$2.28
Aug 20241,0181,0184,6173,16416$76.68$1.99
Jul 20248768983,4432,42519$81.80$2.07
Jun 20241,3541,3463,6072,53612$79.77$2.54
May 20241,4751,4594,9963,50024$80.02$2.12
Apr 20249089053,5322,30736$85.35$1.60
Mar 20248909053,1262,22113$81.28$1.49
Feb 20241,2221,2214,1681,62328$77.25$1.72
Jan 20241,0031,0133,2741,49960$74.15$3.18
Dec 20231,4041,3894,1941,55621$71.90$2.52
Nov 20231,2481,2414,1211,18758$77.69$2.71
Oct 20231,0451,0507,1414,45124$85.64$2.98
Sep 20231,1731,1737,3884,53021$89.43$2.64
Aug 20231,2681,2758,5665,40465$81.39$2.58

Flared above 3%

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 LLCFieldEagleville (Eagle Ford-2)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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Eagleville (Eagle Ford-2) field

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