Skip to content
Royalty Clerk

Texas gas well

Producing

MAY UNIT 1 AC

May Unit 1 Ac is a gas well in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Sugarkane (Austin Chalk) field.

1 well

8,234mcf gas, last 12 months−57% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Austin Chalk)
RRC lease
02-279829

Is your check right?

Check my statement

Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
998 bbl
Gas in Jul 2026
932 mcf

Production by month

Gas output fell 57% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 57% over the last 12 monthsMonthly gas production and oil for MAY UNIT 1 AC, Aug 2023 to Jul 2026. Gas output fell 57% over the last 12 months. 8,234 mcf in the 12 months through Jul 2026, against 19,048 mcf in the 12 months before.Last 12 months: 8,234 mcfmcf per monthbbl per month005001001,0002001,5003002,0004002,500500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 57% over the last 12 monthsMonthly gas production and oil for MAY UNIT 1 AC, Aug 2023 to Jul 2026. Gas output fell 57% over the last 12 months. 8,234 mcf in the 12 months through Jul 2026, against 19,048 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month005001001,0002001,5003002,0004002,500500Jan 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 4.7% of the gas in Sep 2025.

  • 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 MAY UNIT 1 AC 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 4.7% of the gas in Sep 2025.Share of the lease’s gas by disposition code, per month0%50%100%Feb 2024: fuel to plantFlared 4.7%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Feb 2024 the lease's gas goes to a processing plant instead of lease fuelShare of MAY UNIT 1 AC 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 4.7% of the gas in Sep 2025.Share of gas by disposition code0%50%100%Feb 24: fuel to plantFlared 4.7%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    69% · 5,717 mcf

  • Lease fuel (1)

    29% · 2,423 mcf

  • Flared (4)

    1.1% · 94 mcf

1.1% of the gas flared in the last 12 months. 2 months above 3%.

1 well on this lease

Wells on MAY UNIT 1 AC
API numberWell no.Status
42-255-3430412HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCCondensateGathers20Jul 1, 2022–
Harvest Midstream CompanyCondensateGathers20Jul 1, 2022–
Plains Pipeline L.p.CondensateGathers20Jul 1, 2022–
Reynolds Energy Transport LLCCondensateGathers20Jul 1, 2022–
Trafigura Trading LLCCondensateGathers20Jul 1, 2022–
Marathon Oil Ef LLCGas-well gasBuys100Oct 6, 2015–
Marathon Oil Ef LLCGas-well gasGathers100Oct 6, 2015–
Enterprise Crude Oil LLCCondensateGathers5Sep 1, 2018Jul 1, 2022
Gulfmark Energy, Inc.CondensateGathers5Sep 1, 2018Jul 1, 2022
Harvest Midstream CompanyCondensateGathers15Sep 1, 2018Jul 1, 2022
Plains Pipeline L.p.CondensateGathers70Sep 1, 2018Jul 1, 2022
Trafigura Trading LLCCondensateGathers5Sep 1, 2018Jul 1, 2022

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

Who buys my oilOil price check

742.24 acres on the newest permit

Check your decimal on this lease
Permits for May Unit 1 Ac
API numberWell no.Acreson the permit
42-255-3430412H742.24

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 MAY UNIT 1 AC
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202661619326244$80.46$2.89
Jun 202681817355153$84.81$3.15
May 202680839066216$102.13$2.94
Apr 20261371341,1637688$100.32$2.77
Mar 20261031006194316$91.38$3.04
Feb 2026374159040411$64.51$3.62
Jan 202612012268146815$60.04$7.72
Dec 20251291281,0858047$57.97$4.26
Nov 202512612519140$60.06$3.79
Oct 202580741771335$60.89$3.19
Sep 20258938527718$63.96$2.97
Aug 2025363794265811$64.86$2.91
Jul 202551511,6551,1016$68.39$3.20
Jun 202579801,1908105$68.17$3.02
May 202548481,0567026$62.17$3.12
Apr 202575751,6821,1117$63.54$3.42
Mar 202557661,7971,2316$68.24$4.12
Feb 20252001911,44196917$71.53$4.19
Jan 2025646240271$75.74$4.13
Dec 202432331,2998775$70.12$3.01
Nov 202452561,9961,36710$69.95$2.12
Oct 20241311272,4761,71014$71.99$2.20
Sep 202453512,4331,6566$70.24$2.28
Aug 202429281,9831,3597$76.68$1.99
Jul 2024551,4401,0148$81.80$2.07
Jun 2024171,4701,0345$79.77$2.54
May 20241381411,8641,3069$80.02$2.12
Apr 20241721721,8451,20519$85.35$1.60
Mar 20241791891,7591,2507$81.28$1.49
Feb 20244003871,9881,1779$77.25$1.72
Jan 2024113114386413$74.15$3.18
Dec 20231541541,4719864$71.90$2.52
Nov 20231631701,5721,05211$77.69$2.71
Oct 20233203138342745$85.64$2.98
Sep 20231711731,8581,3114$89.43$2.64
Aug 20232122162,4141,78013$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.

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 (Austin Chalk)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

All Marathon Oil Ef LLC leases →

Sugarkane (Austin Chalk) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km