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Royalty Clerk

Texas gas well · RRC district 02 · Lease 277122

Producing

MURPHY-SINCLAIR UNIT

Murphy-Sinclair Unit is a gas well in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Sugarkane (Eagle Ford) field. The Railroad Commission shows 35,573 mcf of gas in the 12 months through Jul 2026.

Gas well dossier · 1 well

35,573mcf gas, last 12 months−15% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-277122

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County · RRC district 02Open Karnes County →
Oil, last 12 months
8,905 bbl
Gas in Jul 2026
3,468 mcf
Reporting to the state
since Jan 2020
Wells
1

Production

Month by month, from the state record

What the Railroad Commission says this gas well produced. Oil is in barrels (bbl). Gas is in thousand cubic feet (mcf).

Gas output fell 15% over the last 12 months

35,573 mcf in the 12 months through Jul 2026, against 42,071 mcf in the 12 months before.

  • Gas (bars, left axis)
  • Oil (line, right axis)
  • Last 12 months
Gas output fell 15% over the last 12 monthsMonthly gas production and oil for MURPHY-SINCLAIR UNIT, Aug 2023 to Jul 2026. Gas output fell 15% over the last 12 months. 35,573 mcf in the 12 months through Jul 2026, against 42,071 mcf in the 12 months before.Last 12 months: 35,573 mcfmcf per monthbbl per month005,00050010k1,00015k1,50020k2,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 15% over the last 12 monthsMonthly gas production and oil for MURPHY-SINCLAIR UNIT, Aug 2023 to Jul 2026. Gas output fell 15% over the last 12 months. 35,573 mcf in the 12 months through Jul 2026, against 42,071 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month005,00050010k1,00015k1,50020k2,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas well 277122, district 02. Reported through Jul 2026. The state revises recent months.

Gas disposition

Where the gas went

Every month the operator tells the state where each mcf of gas went, using a code. The code decides how your gas is paid.

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

Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 4.7% of the gas in Sep 2025.

  • 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 MURPHY-SINCLAIR UNIT 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. Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 4.7% of the gas in Sep 2025.Share of the lease’s gas by disposition code, per month0%50%100%Jan 2024: fuel to plantFlared 4.7%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Jan 2024 the lease's gas goes to a processing plant instead of lease fuelShare of MURPHY-SINCLAIR UNIT 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. Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 4.7% of the gas in Sep 2025.Share of gas by disposition code0%50%100%Jan 24: fuel to plantFlared 4.7%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 277122, district 02. Reported through Jul 2026.

Processing plant (3)

Sent to a gas plant that pulls out natural gas liquids. Your statement should show plant products, and may show processing fees.

Lease fuel (1)

Burned to run equipment on the lease. Not sold, so it pays no royalty. A few percent is normal.

Flared (4)

Burned off or vented, not sold. It pays no royalty. More than 3% in a month is worth watching.

Over the last 12 months, 1.4% of the gas was flared. One month went above 3%, which we mark in the ledger below.

Operator history

Who has run this lease

The operator runs the wells and pays your royalty. When the operator changes, payments often slip for a month or two.

Marathon Oil Ef LLC has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeMarathon Oil Ef LLC, Jan 2020 to Jul 20262020202120222023202420252026Marathon Oil Ef LLCJan 2020 to nowthrough Jul 2026
Operators of this lease over timeMarathon Oil Ef LLC, Jan 2020 to Jul 20262020202120222023202420252026Marathon Oil Ef LLCJan 2020 to nowthrough Jul 2026

SourceTexas Railroad Commission Production Data Query, operator by month. Reported through Jul 2026.

Wells

1 well on this lease

Every well the Railroad Commission links to gas well 277122 in district 02. The API number is the state’s ID for a well.
Wells on MURPHY-SINCLAIR UNIT
API numberWell no.Status
42-255-34090501HActive

SourceTexas Railroad Commission Wellbore Query, district 02, lease 277122.

Who buys and gathers

Who moves and buys this lease's production

The operator files a Form P-4 with the Railroad Commission naming the companies authorised to gather and buy the oil and gas. The buyer's price is the one your royalty is figured on.

  • Condensate

    Enterprise Crude Oil LLC, Harvest Midstream Company, Plains Pipeline L.p., Reynolds Energy Transport LLC and Trafigura Trading LLC gather it.

    Enterprise Crude Oil LLC gathers it: 20% of it, on the list since Jul 1, 2022 · Harvest Midstream Company gathers it: 20% of it, on the list since Jul 1, 2022 · Plains Pipeline L.p. gathers it: 20% of it, on the list since Jul 1, 2022 · Reynolds Energy Transport LLC gathers it: 20% of it, on the list since Jul 1, 2022 · Trafigura Trading LLC gathers it: 20% of it, on the list since Jul 1, 2022

  • Gas from gas wells

    Marathon Oil Ef LLC buys and gathers it.

    Marathon Oil Ef LLC buys it: 100% of it, on the list since Feb 13, 2015 · Marathon Oil Ef LLC gathers it: 100% of it, on the list since Feb 13, 2015

Companies that used to be listed: Enterprise Crude Oil LLC (gathers it, until Jul 1, 2022); Gulfmark Energy, Inc. (gathers it, until Jul 1, 2022); Harvest Midstream Company (gathers it, until Jul 1, 2022); Plains Pipeline L.p. (gathers it, until Jul 1, 2022); Trafigura Trading LLC (gathers it, until Jul 1, 2022).

SourceRailroad Commission of Texas, Form P-4 file, dated Sep 24, 2026 (source). A listed company is authorised to move or buy the production; the state does not say what it paid.

Who buys my oil and gasIs my oil price fair?

Unit and wells

648.65 acres on the newest permit

Acres and wells as the operator filed them on its Railroad Commission drilling permits. Your decimal is your net acres over the unit acres, so this is the number to hold your division order against.
Wells on the permits
11 not plugged
Horizontal
1
First completion
Feb 13, 2015
Latest permit
Oct 10, 2014
Wells and acres on the permits for Murphy-Sinclair Unit
API numberWell no.Acreson the permit
42-255-34090501H648.65

SourceRailroad Commission of Texas, drilling permits and wellbore file, Sep 26, 2026 (source 1, source 2). The acres are what the operator filed; they are not a survey.

Check my decimal against the unit

What the operator reported

What ConocoPhillips told investors it received

Marathon Oil Ef LLC is linked to ConocoPhillips (MRO). Public companies report the average price they realize each quarter. It is an average across everything the company operates, not the price on this lease.
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 on SEC EDGAR, prices before hedging where the company states both. Read by machine from each filing’s tables; the link opens the filing so you can check the figure.

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Estimator

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A rough check before you look at a statement: the state volumes times your decimal, priced at WTI and Henry Hub.

Estimator

What could your check be?

Your decimal interest is the small number on your division order that says what share of the whole lease (8/8ths) is yours. Type it in and we apply it to what the state says MURPHY-SINCLAIR UNIT sold each month.

For example 0.00097656, or a fraction like 1/1024.

Dollars per barrel. Your statements show the gap your operator uses. Leave 0 to price oil at WTI.

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An estimate, not your check

It ignores gathering and processing fees, taxes, plant products and the price your operator actually gets, so your statement will differ. Use it as a ceiling to compare against. Regional gas prices are often below Henry Hub.

Ledger

36 months, newest first

Compare these numbers with your statements. Your share of a month is the “Gas sold” volume times your decimal. Scroll sideways on a phone.
Monthly production, disposition and prices for MURPHY-SINCLAIR UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Marathon Oil1,2401,2083,4682,32115$80.46$2.89
Jun 2026Marathon Oil1,1271,1263,4902,44512$84.81$3.15
May 2026Marathon Oil1,0921,0653,1442,15421$102.13$2.94
Apr 2026Marathon Oil8878823,0752,03220$100.32$2.77
Mar 2026Marathon Oil8317792,9982,08929$91.38$3.04
Feb 2026Marathon Oil04056038311$64.51$3.62
Jan 2026Marathon Oil6546213,0392,08967$60.04$7.72
Dec 2025Marathon Oil1091517445515$57.97$4.26
Nov 2025Marathon Oil7968014,1393,10520$60.06$3.79
Oct 2025Marathon Oil6536453,7712,844100$60.89$3.19
Sep 2025Marathon Oil6666703,5982,585170$63.96$2.97
Aug 2025Marathon Oil8508563,5472,47742$64.86$2.91
Jul 2025Marathon Oil9559323,1422,09111$68.39$3.20
Jun 2025Marathon Oil8228493,3822,30115$68.17$3.02
May 2025Marathon Oil7427163,1862,11817$62.17$3.12
Apr 2025Marathon Oil6486573,1492,08012$63.54$3.42
Mar 2025Marathon Oil6986973,2122,20011$68.24$4.12
Feb 2025Marathon Oil6686622,9151,96035$71.53$4.19
Jan 2025Marathon Oil5585722,0531,39135$75.74$4.13
Dec 2024Marathon Oil9229344,7813,22917$70.12$3.01
Nov 2024Marathon Oil1,0581,0504,0592,78021$69.95$2.12
Oct 2024Marathon Oil9679644,0972,83023$71.99$2.20
Sep 2024Marathon Oil9869973,8542,6249$70.24$2.28
Aug 2024Marathon Oil1,2891,2854,2412,90615$76.68$1.99
Jul 2024Marathon Oil1,0431,0384,5663,21526$81.80$2.07
Jun 2024Marathon Oil1,0039804,4103,10115$79.77$2.54
May 2024Marathon Oil7127255,0283,52324$80.02$2.12
Apr 2024Marathon Oil8338064,4012,87445$85.35$1.60
Mar 2024Marathon Oil3323471,5911,1307$81.28$1.49
Feb 2024Marathon Oil63262416,97415,56123$77.25$1.72
Jan 2024Marathon Oil4003918,4067,76126$74.15$3.18
Dec 2023Marathon Oil28129322002$71.90$2.52
Nov 2023Marathon Oil6126541,1779036$77.69$2.71
Oct 2023Marathon Oil1,5341,5395,0564,4148$85.64$2.98
Sep 2023Marathon Oil1,6951,6655,9925,1697$89.43$2.64
Aug 2023Marathon Oil1,0551,0285,4334,65217$81.39$2.58

No report filed More than 3% of gas flared

SourceVolumes: Texas Railroad Commission Production Data Query, reported through Jul 2026. Prices: EIA WTI Cushing spot and Henry Hub spot, monthly, through Aug 2026. “Gas sold” is gas sent to a transmission line (code 2) or a plant (code 3).

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Around this lease

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Everything on this page connects to the operator, field and county records. Start from any of them.

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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How to read this page

Questions owners ask

What is a decimal interest?

It is your share of the whole lease, written as a decimal. A 1/4 royalty on 5 net acres in a 1,280-acre unit is 1/4 × 5 ÷ 1,280 = 0.00097656. Your division order states yours.

How do I use this page to check a royalty check?

Take the “Gas sold” volume for the month the check covers and multiply it by your decimal. The answer should match the mcf on your statement. If it does not, upload the statement and we will show where the two differ.

Why is the newest month Jul 2026?

The Railroad Commission publishes production two to three months after the fact and revises recent months. We re-pull the latest three months on every update.

Does this page show what my check should be?

No. It shows what the state recorded. Prices, fees and taxes depend on your lease and on what your operator gets for the oil and gas. The estimator gives a ceiling to compare against.

Sources and method

Where these numbers come from

  • Production and disposition by month: Texas Railroad Commission Production Data Query, gas well 277122, district 02, reported through Jul 2026.
  • Wells: Texas Railroad Commission Wellbore Query.
  • Prices: U.S. Energy Information Administration, WTI Cushing spot and Henry Hub spot, monthly.
  • Page updated Sep 28, 2026.

We show the state’s numbers as filed. Where the state has no report for a month, we say so instead of guessing.