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Royalty Clerk

Texas gas well

Producing

THREE SISTERS 01

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

1 well

2,009mcf gas, last 12 months−29% vs prior year
RRC lease
02-268690

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Where it sits

This county

Live Oak CountyLive OakAtascosaGoliadMcMullenKarnesSan PatricioBeeLive Oak County
Live Oak County
Oil, last 12 months
1,086 bbl
Gas in Jul 2026
588 mcf

Production by month

Gas output fell 29% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 29% over the last 12 monthsMonthly gas production and oil for THREE SISTERS 01, Aug 2023 to Jul 2026. Gas output fell 29% over the last 12 months. 2,009 mcf in the 12 months through Jul 2026, against 2,818 mcf in the 12 months before.Last 12 months: 2,009 mcfmcf per monthbbl per month00200504001006001508002001,000250Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 29% over the last 12 monthsMonthly gas production and oil for THREE SISTERS 01, Aug 2023 to Jul 2026. Gas output fell 29% over the last 12 months. 2,009 mcf in the 12 months through Jul 2026, against 2,818 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month00200504001006001508002001,000250Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

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

All 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. All 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
All 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. All 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.

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.

1 well on this lease

Wells on THREE SISTERS 01
API numberWell no.Status
42-297-3502706HShut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCCondensateGathers50Mar 1, 2023–
Enterprise Crude Pipeline LLCCondensateGathers50Mar 1, 2023–
Marathon Oil Ef LLCGas-well gasBuys100Mar 1, 2023–
Marathon Oil Ef LLCGas-well gasGathers100Mar 1, 2023–
Gulfmark Energy, Inc.CondensateGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCGas-well gasGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCGas-well gasBuys100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCCondensateGathers50Oct 1, 2019Oct 2, 2019
Enterprise Crude Oil LLCCondensateGathers25Oct 1, 2019Oct 2, 2019
Enterprise Crude Pipeline LLCCondensateGathers25Oct 1, 2019Oct 2, 2019

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

6,464.12 acres on the newest permit

Permits for Three Sisters 01
API numberWell no.Acreson the permit
42-297-3502706H6,464.12

SourceRailroad Commission drilling permits, Oct 3, 2026 (source 1, source 2).

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 Oil1631635885880$80.46$2.89
Jun 2026Marathon Oil00000$84.81$3.15
May 2026Marathon Oil00000$102.13$2.94
Apr 2026Marathon Oil262614140$100.32$2.77
Mar 2026Marathon Oil262613130$91.38$3.04
Feb 2026Marathon Oil00000$64.51$3.62
Jan 2026Marathon Oil1871871481480$60.04$7.72
Dec 2025Marathon Oil1601602352350$57.97$4.26
Nov 2025Marathon Oil1421422212210$60.06$3.79
Oct 2025Marathon Oil1571572802800$60.89$3.19
Sep 2025Marathon Oil1101101721720$63.96$2.97
Aug 2025Marathon Oil1151153383380$64.86$2.91
Jul 2025Marathon Oil1261262442440$68.39$3.20
Jun 2025Marathon Oil1241242842840$68.17$3.02
May 2025Marathon Oil1381382622620$62.17$3.12
Apr 2025Marathon Oil1591592152150$63.54$3.42
Mar 2025Marathon Oil1521522062060$68.24$4.12
Feb 2025Marathon Oil999939390$71.53$4.19
Jan 2025Marathon Oil1891896386380$75.74$4.13
Dec 2024Marathon Oil11511527270$70.12$3.01
Nov 2024Marathon Oil969620200$69.95$2.12
Oct 2024Marathon Oil1101101261260$71.99$2.20
Sep 2024Marathon Oil1171173363360$70.24$2.28
Aug 2024Marathon Oil1191194214210$76.68$1.99
Jul 2024Marathon Oil96964054050$81.80$2.07
Jun 2024Marathon Oil90901701700$79.77$2.54
May 2024Marathon Oil1121122902900$80.02$2.12
Apr 2024Marathon Oil1311317397390$85.35$1.60
Mar 2024Marathon Oil1161169279270$81.28$1.49
Feb 2024Marathon Oil14414424240$77.25$1.72
Jan 2024Marathon Oil14414458580$74.15$3.18
Dec 2023Marathon Oil12212283830$71.90$2.52
Nov 2023Marathon Oil2202202512510$77.69$2.71
Oct 2023Marathon Oil1951951091090$85.64$2.98
Sep 2023Marathon Oil47471691690$89.43$2.64
Aug 2023Marathon Oil331201200$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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