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Texas oil lease

Producing

THREE SISTERS 01

Three Sisters 01 is an oil lease in Live Oak County, Texas, operated by Marathon Oil Ef LLC in the Sugarkane (Eagle Ford) field.

12 wells

45,896bbl oil, last 12 months−50% vs prior year
Operator
Marathon Oil Ef LLC
County
Live Oak County
Field
Sugarkane (Eagle Ford)
RRC lease
02-11430

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Where it sits

This county

Live Oak CountyLive OakAtascosaGoliadMcMullenKarnesSan PatricioBeeLive Oak County
Live Oak County
Gas, last 12 months
283,428 mcf
Oil in Jul 2026
230 bbl

Checks stopped on this lease?

  • Sales

    Sales over the last 3 months fell to 13% of the 9 months before.

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

See why checks stop on this lease

Production by month

Oil output fell 50% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 50% over the last 12 monthsMonthly oil production and gas for THREE SISTERS 01, Aug 2023 to Jul 2026. Oil output fell 50% over the last 12 months. 45,896 bbl in the 12 months through Jul 2026, against 91,176 bbl in the 12 months before.Last 12 months: 45,896 bblbbl per monthmcf per month005,00025k10k50k15k75k20k100k25k125kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 50% over the last 12 monthsMonthly oil production and gas for THREE SISTERS 01, Aug 2023 to Jul 2026. Oil output fell 50% over the last 12 months. 45,896 bbl in the 12 months through Jul 2026, against 91,176 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005,00025k10k50k15k75k20k100k25k125kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

97% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
97% of the gas went to a processing plant in the last 12 monthsShare of THREE SISTERS 01 gas by disposition code each month, Aug 2023 to Jul 2026. 97% 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
97% of the gas went to a processing plant in the last 12 monthsShare of THREE SISTERS 01 gas by disposition code each month, Aug 2023 to Jul 2026. 97% 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)

    97% · 275,353 mcf

  • Lease fuel (1)

    2.8% · 8,075 mcf

Who has run this lease

The operator changed once, most recently in Mar 2023

Operators of this lease over timeEnsign Operating LLC, Jan 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 20262020202120222023202420252026Changed Mar 2023Ensign Operating LLCJan 2020 to Feb 2023Marathon Oil Ef LLCMar 2023 to now
Operators of this lease over timeEnsign Operating LLC, Jan 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 20262020202120222023202420252026Changed Mar 2023Ensign Operating LLCJan 2020 to Feb 2023Marathon Oil Ef LLCMar 2023 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

12 wells on this lease

Wells on THREE SISTERS 01
API numberWell no.Status
42-297-3513309HActive
42-297-3578236HActive
42-297-3582444HActive
42-297-3607851HShut-in
42-297-3608052HActive
42-297-3608153HActive
42-297-3608254HActive
42-297-3621558HActive
42-297-3621659HActive
42-297-3621760HActive
42-297-3621861HActive
42-297-3621962HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers50Mar 1, 2023–
Enterprise Crude Pipeline LLCOilGathers50Mar 1, 2023–
Marathon Oil Ef LLCCasinghead gasBuys100Mar 1, 2023–
Marathon Oil Ef LLCCasinghead gasGathers100Mar 1, 2023–
Ensign Operating LLCCasinghead gasGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCCasinghead gasBuys100Oct 2, 2019Mar 1, 2023
Gulfmark Energy, Inc.OilGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCCasinghead gasGathers50Oct 1, 2019Oct 2, 2019
Enterprise Products Operating LLCCasinghead gasGathers50Oct 1, 2019Oct 2, 2019
Enterprise Products Operating LLCCasinghead gasBuys100Oct 1, 2019Oct 2, 2019

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

Who buys my oilOil price check

6,458 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 6,372.87 and 6,464.12 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    12 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 Three Sisters 01
API numberWell no.Acreson the permit
42-297-3621558H6,458
42-297-3621659H6,458
42-297-3621760H6,458
42-297-3621861H6,458
42-297-3621962H6,458
42-297-3607851H6,372.87
42-297-3608052H6,372.87
42-297-3608153H6,372.87
42-297-3608254H6,372.87
42-297-3582444H6,372.87
42-297-3578236H6,372.87
42-297-3513309H6,464.12

SourceRailroad Commission drilling permits, Sep 26, 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 THREE SISTERS 01
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil2302309,9739,6240$80.46$2.89
Jun 2026Marathon Oil88188111,04710,6240$84.81$3.15
May 2026Marathon Oil7927924,4714,3390$102.13$2.94
Apr 2026Marathon Oil3,2033,20315,63815,1210$100.32$2.77
Mar 2026Marathon Oil3,3623,36217,72017,1510$91.38$3.04
Feb 2026Marathon Oil3,3843,38416,81016,2340$64.51$3.62
Jan 2026Marathon Oil4,6094,60929,90728,9480$60.04$7.72
Dec 2025Marathon Oil4,8224,82237,26736,3310$57.97$4.26
Nov 2025Marathon Oil5,6125,61235,79234,7890$60.06$3.79
Oct 2025Marathon Oil5,8705,87034,28033,3390$60.89$3.19
Sep 2025Marathon Oil6,1926,19234,16233,2930$63.96$2.97
Aug 2025Marathon Oil6,9396,93936,36135,5600$64.86$2.91
Jul 2025Marathon Oil7,9427,94276,42674,7260$68.39$3.20
Jun 2025Marathon Oil5,4865,48626,51925,8890$68.17$3.02
May 2025Marathon Oil5,9195,91929,53428,8220$62.17$3.12
Apr 2025Marathon Oil7,6847,68438,89538,0750$63.54$3.42
Mar 2025Marathon Oil7,7357,73541,35440,4340$68.24$4.12
Feb 2025Marathon Oil5,8295,82928,28527,7870$71.53$4.19
Jan 2025Marathon Oil7,2777,27736,46435,8050$75.74$4.13
Dec 2024Marathon Oil8,2518,25141,40540,7450$70.12$3.01
Nov 2024Marathon Oil7,7827,78242,75742,2060$69.95$2.12
Oct 2024Marathon Oil8,6638,66350,28249,6220$71.99$2.20
Sep 2024Marathon Oil8,6668,66647,94347,3440$70.24$2.28
Aug 2024Marathon Oil9,9429,94252,50751,7820$76.68$1.99
Jul 2024Marathon Oil10,68010,68058,77158,0990$81.80$2.07
Jun 2024Marathon Oil10,77610,77654,26853,6940$79.77$2.54
May 2024Marathon Oil10,96410,96457,17856,6180$80.02$2.12
Apr 2024Marathon Oil9,5329,53261,46760,8320$85.35$1.60
Mar 2024Marathon Oil15,14115,14168,65568,2120$81.28$1.49
Feb 2024Marathon Oil17,39017,39084,90984,4160$77.25$1.72
Jan 2024Marathon Oil22,89122,891100,566100,0330$74.15$3.18
Dec 2023Marathon Oil15,15915,15956,30855,9840$71.90$2.52
Nov 2023Marathon Oil18,54318,54372,70372,4230$77.69$2.71
Oct 2023Marathon Oil22,15322,15394,26793,9330$85.64$2.98
Sep 2023Marathon Oil20,91420,91485,91985,6490$89.43$2.64
Aug 2023Marathon Oil22,59322,59392,00991,6650$81.39$2.58

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)CountyLive Oak County

Marathon Oil Ef LLC in Live Oak County

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Sugarkane (Eagle Ford) field

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