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Texas oil lease

Producing

KOWALIK 228-1R

Kowalik 228-1R is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Sugarkane (Eagle Ford) field.

10 wells

11,495bbl oil, last 12 months+73% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-10909

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
34,370 mcf
Oil in Jul 2026
686 bbl

Production by month

Oil output rose 73% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 73% over the last 12 monthsMonthly oil production and gas for KOWALIK 228-1R, Aug 2023 to Jul 2026. Oil output rose 73% over the last 12 months. 11,495 bbl in the 12 months through Jul 2026, against 6,649 bbl in the 12 months before.Last 12 months: 11,495 bblbbl per monthmcf per month005002,0001,0004,0001,5006,0002,0008,0002,50010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 73% over the last 12 monthsMonthly oil production and gas for KOWALIK 228-1R, Aug 2023 to Jul 2026. Oil output rose 73% over the last 12 months. 11,495 bbl in the 12 months through Jul 2026, against 6,649 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005002,0001,0004,0001,5006,0002,0008,0002,50010kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

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

Flaring peaked at 4.0% of the gas in Feb 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Jan 2024 the lease's gas goes to a processing plant instead of lease fuelShare of KOWALIK 228-1R gas by disposition code each month, Aug 2023 to Jul 2026. Since Jan 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.0% of the gas in Feb 2026.Share of the lease’s gas by disposition code, per month0%50%100%Jan 2024: fuel to plantFlared 4.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Jan 2024 the lease's gas goes to a processing plant instead of lease fuelShare of KOWALIK 228-1R gas by disposition code each month, Aug 2023 to Jul 2026. Since Jan 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.0% of the gas in Feb 2026.Share of gas by disposition code0%50%100%Jan 24: fuel to plantFlared 4.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    86% · 29,615 mcf

  • Lease fuel (1)

    13% · 4,433 mcf

  • Flared (4)

    0.9% · 322 mcf

0.9% of the gas flared in the last 12 months. One month above 3%.

10 wells on this lease

Wells on KOWALIK 228-1R
API numberWell no.Status
42-255-337034HActive
42-255-337053HActive
42-255-337122HActive
42-255-338765HActive
42-255-342516HShut-in
42-255-34253307HActive
42-255-342548HShut-in
42-255-3550910HActive
42-255-3551011HActive
42-255-3551112HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers25Jul 1, 2022–
Plains Pipeline L.p.OilGathers25Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022–
Trafigura Trading LLCOilGathers25Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Sep 11, 2014–
Marathon Oil Ef LLCCasinghead gasGathers100Sep 11, 2014–
Enterprise Crude Oil LLCOilGathers1Sep 6, 2018Jul 1, 2022
Gulfmark Energy, Inc.OilGathers1Sep 6, 2018Jul 1, 2022
Plains Pipeline L.p.OilGathers97Sep 6, 2018Jul 1, 2022
Trafigura Trading LLCOilGathers1Sep 6, 2018Jul 1, 2022

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

Who buys my oilOil price check

623.40 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 623.4 and 640 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    10 wells are listed on this lease

    Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

Check your decimal on this lease
Permits for Kowalik 228-1R
API numberWell no.Acreson the permit
42-255-3550910H623.40
42-255-3551011H623.40
42-255-3551112H623.40
42-255-342516H623.40
42-255-34253307H623.40
42-255-342548H623.40
42-255-338765H640
42-255-337122H640
42-255-337053H640
42-255-337034H640

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 KOWALIK 228-1R
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20266866893,1382,67717$80.46$2.89
Jun 20266306382,1161,7968$84.81$3.15
May 20269049022,4982,16413$102.13$2.94
Apr 20261,2111,2013,2842,8869$100.32$2.77
Mar 20266156461,5851,37811$91.38$3.04
Feb 20261,0191,0033,4842,873138$64.51$3.62
Jan 20261,4161,4114,0323,47157$60.04$7.72
Dec 20259279211,2511,0897$57.97$4.26
Nov 20257247222,2021,94810$60.06$3.79
Oct 20259589664,2603,70913$60.89$3.19
Sep 20251,0971,1092,2251,92410$63.96$2.97
Aug 20251,3081,3234,2953,70029$64.86$2.91
Jul 20252,0371,9856,1485,18038$68.39$3.20
Jun 202545000$68.17$3.02
May 202559592001720$62.17$3.12
Apr 202547514383811$63.54$3.42
Mar 20252182223783230$68.24$4.12
Feb 20254274215294582$71.53$4.19
Jan 202515215227230$75.74$4.13
Dec 202414614726220$70.12$3.01
Nov 202419419433280$69.95$2.12
Oct 202425227133280$71.99$2.20
Sep 20241,4251,4274023461$70.24$2.28
Aug 20241,6881,6832,4222,1013$76.68$1.99
Jul 20241,3271,3124143551$81.80$2.07
Jun 20244374356665621$79.77$2.54
May 202421621527240$80.02$2.12
Apr 20242532774373755$85.35$1.60
Mar 20241,5131,5104,0633,49120$81.28$1.49
Feb 20249829653,0662,34821$77.25$1.72
Jan 20243263301,1919727$74.15$3.18
Dec 20235605631,56858036$71.90$2.52
Nov 20237577551,34126613$77.69$2.71
Oct 20238188283,1971,95438$85.64$2.98
Sep 20231,5031,4984,4213,05913$89.43$2.64
Aug 20231,0331,0334,0082,73921$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 LLCFieldSugarkane (Eagle Ford)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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Sugarkane (Eagle Ford) field

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