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Royalty Clerk

Texas gas well · RRC district 02 · Lease 285281

Producing

FOSTER UNIT

Foster 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 67,580 mcf of gas in the 12 months through Jul 2026.

Gas well dossier · 1 well

67,580mcf gas, last 12 months+2% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-285281

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County · RRC district 02Open Karnes County →
Oil, last 12 months
2,702 bbl
Gas in Jul 2026
2,411 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 held steady over the last 12 months

67,580 mcf in the 12 months through Jul 2026, against 66,074 mcf in the 12 months before.

  • Gas (bars, left axis)
  • Oil (line, right axis)
  • Last 12 months
Gas output held steady over the last 12 monthsMonthly gas production and oil for FOSTER UNIT, Aug 2023 to Jul 2026. Gas output held steady over the last 12 months. 67,580 mcf in the 12 months through Jul 2026, against 66,074 mcf in the 12 months before.Last 12 months: 67,580 mcfmcf per monthbbl per month005,00025010k50015k75020k1,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output held steady over the last 12 monthsMonthly gas production and oil for FOSTER UNIT, Aug 2023 to Jul 2026. Gas output held steady over the last 12 months. 67,580 mcf in the 12 months through Jul 2026, against 66,074 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month005,00025010k50015k75020k1,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas well 285281, 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.

86% of the gas went to a processing plant in the last 12 months

Each bar is one month. Colors are the disposition codes the operator reported.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
86% of the gas went to a processing plant in the last 12 monthsShare of FOSTER UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 86% 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
86% of the gas went to a processing plant in the last 12 monthsShare of FOSTER UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 86% 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, gas disposition by code, lease 285281, 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, 0.4% of the gas was flared. No month went above 3%.

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 285281 in district 02. The API number is the state’s ID for a well.
Wells on FOSTER UNIT
API numberWell no.Status
42-255-3606412HActive

SourceTexas Railroad Commission Wellbore Query, district 02, lease 285281.

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 Oct 25, 2018 · Marathon Oil Ef LLC gathers it: 100% of it, on the list since Oct 25, 2018

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

646.10 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
Oct 25, 2018
Latest permit
Aug 16, 2018
Wells and acres on the permits for Foster Unit
API numberWell no.Acreson the permit
42-255-3606412H646.10

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

Estimate your royalty for this lease

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 FOSTER 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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Enter your decimal to see an estimated royalty for each of the last 12 months this lease reported. Nothing you type leaves your browser.

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 FOSTER UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Marathon Oil83912,4112,05411$80.46$2.89
Jun 2026Marathon Oil2782797,3626,15225$84.81$3.15
May 2026Marathon Oil3493539,9648,44063$102.13$2.94
Apr 2026Marathon Oil3203068,4127,25232$100.32$2.77
Mar 2026Marathon Oil85853,6293,11914$91.38$3.04
Feb 2026Marathon Oil1041104,4533,80816$64.51$3.62
Jan 2026Marathon Oil3333338,6757,43429$60.04$7.72
Dec 2025Marathon Oil4174144,2863,65415$57.97$4.26
Nov 2025Marathon Oil2712687,2456,29249$60.06$3.79
Oct 2025Marathon Oil1401463,9493,4619$60.89$3.19
Sep 2025Marathon Oil2182123,8043,1927$63.96$2.97
Aug 2025Marathon Oil1041103,3902,92412$64.86$2.91
Jul 2025Marathon Oil37236910,0868,68123$68.39$3.20
Jun 2025Marathon Oil2332303,9193,3728$68.17$3.02
May 2025Marathon Oil1902032,8382,4393$62.17$3.12
Apr 2025Marathon Oil81780916,28414,10920$63.54$3.42
Mar 2025Marathon Oil3923898,4527,41628$68.24$4.12
Feb 2025Marathon Oil2502633,1642,7459$71.53$4.19
Jan 2025Marathon Oil4884794,9623,95426$75.74$4.13
Dec 2024Marathon Oil3012936,0014,94226$70.12$3.01
Nov 2024Marathon Oil18192,6512,20617$69.95$2.12
Oct 2024Marathon Oil68751,8981,58410$71.99$2.20
Sep 2024Marathon Oil3143202432021$70.24$2.28
Aug 2024Marathon Oil4814795,5764,67227$76.68$1.99
Jul 2024Marathon Oil4034035,0234,23719$81.80$2.07
Jun 2024Marathon Oil2922834,2223,58520$79.77$2.54
May 2024Marathon Oil1151255,0634,26426$80.02$2.12
Apr 2024Marathon Oil3703726,3395,61145$85.35$1.60
Mar 2024Marathon Oil3623604,5633,83918$81.28$1.49
Feb 2024Marathon Oil2922971,8421,12815$77.25$1.72
Jan 2024Marathon Oil3593603,1402,34241$74.15$3.18
Dec 2023Marathon Oil4644615,4654,291150$71.90$2.52
Nov 2023Marathon Oil3693804,4253,55754$77.69$2.71
Oct 2023Marathon Oil5985897,9046,94428$85.64$2.98
Sep 2023Marathon Oil3943874,4543,81813$89.43$2.64
Aug 2023Marathon Oil2712913,0702,61613$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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Found by the location of their wells.

Drilling permits within 10 km

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 285281, 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.