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ZAESKE-ECKOLS UNIT

Zaeske-Eckols Unit is a gas well in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

Gas well dossier

1,232mcf gas, last 12 months−77% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-289128

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
3,224 bbl
Gas in Jul 2026
0 mcf

Checks stopped on this lease?

  • Sales

    No sales reported for the last 3 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 fell 77% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 77% over the last 12 monthsMonthly gas production and oil for ZAESKE-ECKOLS UNIT, Aug 2023 to Jul 2026. Gas output fell 77% over the last 12 months. 1,232 mcf in the 12 months through Jul 2026, against 5,475 mcf in the 12 months before.Last 12 months: 1,232 mcfmcf per monthbbl per month001,0001,0002,0002,0003,0003,0004,0004,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 77% over the last 12 monthsMonthly gas production and oil for ZAESKE-ECKOLS UNIT, Aug 2023 to Jul 2026. Gas output fell 77% over the last 12 months. 1,232 mcf in the 12 months through Jul 2026, against 5,475 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month001,0001,0002,0002,0003,0003,0004,0004,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

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

Flaring peaked at 7.0% of the gas in Jan 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Feb 2024 the lease's gas goes to a processing plant instead of lease fuelShare of ZAESKE-ECKOLS UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Feb 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 7.0% of the gas in Jan 2024.Share of the lease’s gas by disposition code, per month0%50%100%Feb 2024: fuel to plantFlared 7.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Feb 2024 the lease's gas goes to a processing plant instead of lease fuelShare of ZAESKE-ECKOLS UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Feb 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 7.0% of the gas in Jan 2024.Share of gas by disposition code0%50%100%Feb 24: fuel to plantFlared 7.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    60% · 1,977 mcf

  • Lease fuel (1)

    39% · 1,287 mcf

  • Flared (4)

    1.1% · 35 mcf

1.1% of the gas flared in the last 12 months. 4 months above 3%.

Wells on this lease

No wells are linked to this lease in our data

Production is still reported at lease level.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCCondensateGathers20Jul 1, 2022–
Genesis Crude Oil, L.p.CondensateGathers20Jul 1, 2022–
Harvest Midstream CompanyCondensateGathers20Jul 1, 2022–
Shell Trading (Us) CompanyCondensateGathers20Jul 1, 2022–
Reynolds Energy Transport LLCCondensateGathers10Jul 1, 2022–
Statewide Crude Inc.CondensateGathers10Jul 1, 2022–
Marathon Oil Ef LLCGas-well gasBuys100Apr 20, 2012–
Marathon Oil Ef LLCGas-well gasGathers100Apr 20, 2012–
Enterprise Crude Oil LLCCondensateGathers1Apr 20, 2012Jul 1, 2022
Genesis Crude Oil, L.p.CondensateGathers1Apr 20, 2012Jul 1, 2022
Gulfmark Energy, Inc.CondensateGathers1Apr 20, 2012Jul 1, 2022
Harvest Midstream CompanyCondensateGathers95Apr 20, 2012Jul 1, 2022
Shell Trading (Us) CompanyCondensateGathers1Apr 20, 2012Jul 1, 2022
Statewide Crude Inc.CondensateGathers1Apr 20, 2012Jul 1, 2022

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

Who buys my oilOil price check

311.77 acres on the newest permit

Check your decimal on this lease
Permits for Zaeske-Eckols Unit
API numberWell no.Acreson the permit
42-255-322221H311.77

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 ZAESKE-ECKOLS UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202600000$80.46$2.89
Jun 202600000$84.81$3.15
May 202601000$102.13$2.94
Apr 20263031640$100.32$2.77
Mar 2026787716120$91.38$3.04
Feb 202657561080$64.51$3.62
Jan 202600000$60.04$7.72
Dec 202500000$57.97$4.26
Nov 2025021000$60.06$3.79
Oct 20258188171861211$60.89$3.19
Sep 20258548644512897$63.96$2.97
Aug 20251,3871,37956332910$64.86$2.91
Jul 20251,0811,0798174569$68.39$3.20
Jun 20251,0581,0482711472$68.17$3.02
May 20256866863271902$62.17$3.12
Apr 20257847741721061$63.54$3.42
Mar 202500000$68.24$4.12
Feb 202500000$71.53$4.19
Jan 2025020000$75.74$4.13
Dec 20241,0071,0052241441$70.12$3.01
Nov 20241,1731,1752561712$69.95$2.12
Oct 20241,1461,1557214873$71.99$2.20
Sep 20241,6651,6711,0947634$70.24$2.28
Aug 20242,2172,1961,5931,0499$76.68$1.99
Jul 20241,2011,1931,4269574$81.80$2.07
Jun 20244515042,2791,37510$79.77$2.54
May 20242,5412,5202,9701,84128$80.02$2.12
Apr 20241,8421,8182,3721,43153$85.35$1.60
Mar 20241,1261,1261,9501,22223$81.28$1.49
Feb 202498299390545823$77.25$1.72
Jan 20241,5251,5287262251$74.15$3.18
Dec 20231,7801,807757026$71.90$2.52
Nov 20233,9493,911523022$77.69$2.71
Oct 20231,2471,255535119$85.64$2.98
Sep 20231,8601,8803,5682,78618$89.43$2.64
Aug 20232,9762,9712,5911,90526$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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New drilling permits in Karnes County

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