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Royalty Clerk

Texas oil lease · RRC district 01 · Lease 15397

Producing

BARNHART (EF)

Barnhart (Ef) is an oil lease in Gonzales County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field. The Railroad Commission shows 994,496 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 60 wells

994,496bbl oil, last 12 months−34% vs prior year
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15397

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Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County · RRC district 01Open Gonzales County →
Gas, last 12 months
1,247,981 mcf
Oil in Jul 2026
71,002 bbl
Reporting to the state
since Jan 2020
Wells
60

Production

Month by month, from the state record

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

Oil output fell 34% over the last 12 months

994,496 bbl in the 12 months through Jul 2026, against 1,513,082 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output fell 34% over the last 12 monthsMonthly oil production and gas for BARNHART (EF), Aug 2023 to Jul 2026. Oil output fell 34% over the last 12 months. 994,496 bbl in the 12 months through Jul 2026, against 1,513,082 bbl in the 12 months before.Last 12 months: 994,496 bblbbl per monthmcf per month0050k50k100k100k150k150k200k200k250k250kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 34% over the last 12 monthsMonthly oil production and gas for BARNHART (EF), Aug 2023 to Jul 2026. Oil output fell 34% over the last 12 months. 994,496 bbl in the 12 months through Jul 2026, against 1,513,082 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0050k50k100k100k150k150k200k200k250k250kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 15397, district 01. 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.

85% of the gas went to a processing plant in the last 12 months

Flaring peaked at 4.3% of the gas in May 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
85% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF) gas by disposition code each month, Aug 2023 to Jul 2026. 85% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.3% of the gas in May 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.3%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
85% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF) gas by disposition code each month, Aug 2023 to Jul 2026. 85% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.3% of the gas in May 2026.Share of gas by disposition code0%50%100%Flared 4.3%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 15397, district 01. 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, 2.9% of the gas was flared. 5 months 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

60 wells on this lease

Every well the Railroad Commission links to oil lease 15397 in district 01. The API number is the state’s ID for a well.
Wells on BARNHART (EF)
API numberWell no.Status
42-177-320971HShut-in
42-177-320983HShut-in
42-177-321002HActive
42-177-321484HActive
42-177-322775HActive
42-177-322786HActive
42-177-324947HShut-in
42-177-325569HShut-in
42-177-3257610HShut-in
42-177-3257711HActive
42-177-3262115HActive
42-177-3262214HShut-in
42-177-3269018HActive
42-177-3269619HActive
42-177-3273023HActive
42-177-3273125HShut-in
42-177-3275324HShut-in
42-177-3276630HShut-in
42-177-3283620HShut-in
42-177-3283721HActive
42-177-3288013HActive
42-177-3288112HShut-in
42-177-3292444HActive
42-177-3292650HShut-in
42-177-3304037HActive
42-177-3304138HActive
42-177-3326360HActive
42-177-3350361HActive
42-177-33504501HShut-in
42-177-3350559HShut-in
42-177-33506502HShut-in
42-177-3361836HActive
42-177-3361935HActive
42-177-3362033HActive
42-177-3362134HShut-in
42-177-34010100HActive
42-177-34012101HActive
42-177-34013102HActive
42-177-34014103HActive
42-177-34093104HActive
42-177-34094105HActive
42-177-34095106HActive
42-177-34096107HActive
42-177-3413848HActive
42-177-3413949HActive
42-177-34284108HActive
42-177-34285109HActive
42-177-34286110HActive
42-177-34287111HActive
42-177-3446717HActive
42-177-3446858HActive
42-177-3460726HActive
42-177-3460851HActive
42-177-3469563HActive
42-177-3469664HActive
42-177-3469765HActive
42-177-3469866HActive
42-177-34701112HActive
42-177-34702113HActive
42-177-3470698HActive

SourceTexas Railroad Commission Wellbore Query, district 01, lease 15397.

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 BARNHART (EF) 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 “Oil sold” volume times your decimal. Scroll sideways on a phone.
Monthly production, disposition and prices for BARNHART (EF)
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Marathon Oil71,00270,90594,57379,1001,832$80.46$2.89
Jun 2026Marathon Oil61,98061,90992,29876,6933,601$84.81$3.15
May 2026Marathon Oil72,08772,33487,29071,5903,729$102.13$2.94
Apr 2026Marathon Oil80,57880,365105,24488,0494,074$100.32$2.77
Mar 2026Marathon Oil67,10966,76792,19875,6911,631$91.38$3.04
Feb 2026Marathon Oil68,60269,00191,07577,0482,503$64.51$3.62
Jan 2026Marathon Oil81,85581,674102,08285,7113,215$60.04$7.72
Dec 2025Marathon Oil88,75188,976111,14793,5132,553$57.97$4.26
Nov 2025Marathon Oil88,04388,280102,78587,9612,838$60.06$3.79
Oct 2025Marathon Oil99,31998,731119,775105,6441,972$60.89$3.19
Sep 2025Marathon Oil100,763101,266118,109102,2653,156$63.96$2.97
Aug 2025Marathon Oil114,407114,551131,405111,6244,953$64.86$2.91
Jul 2025Marathon Oil127,237127,374142,332128,470925$68.39$3.20
Jun 2025Marathon Oil123,506122,861135,106121,6321,122$68.17$3.02
May 2025Marathon Oil135,088134,953149,286134,5161,127$62.17$3.12
Apr 2025Marathon Oil142,856142,813156,703142,0012,005$63.54$3.42
Mar 2025Marathon Oil139,810139,691162,734149,3452,754$68.24$4.12
Feb 2025Marathon Oil138,553139,147163,871151,9022,200$71.53$4.19
Jan 2025Marathon Oil87,32287,070171,243157,1142,141$75.74$4.13
Dec 2024Marathon Oil116,888116,961216,103198,8593,644$70.12$3.01
Nov 2024Marathon Oil147,744147,805234,478215,9284,296$69.95$2.12
Oct 2024Marathon Oil168,777168,778220,713202,9663,754$71.99$2.20
Sep 2024Marathon Oil133,141132,353164,825150,2704,399$70.24$2.28
Aug 2024Marathon Oil52,16052,09053,91549,563542$76.68$1.99
Jul 2024Marathon Oil60,10060,13468,92063,622851$81.80$2.07
Jun 2024Marathon Oil65,22265,19286,81079,8801,156$79.77$2.54
May 2024Marathon Oil73,03973,75996,16788,556853$80.02$2.12
Apr 2024Marathon Oil79,57079,80293,11286,671765$85.35$1.60
Mar 2024Marathon Oil91,87091,650106,33299,544675$81.28$1.49
Feb 2024Marathon Oil76,95577,40384,93279,858346$77.25$1.72
Jan 2024Marathon Oil82,88182,20191,07885,310823$74.15$3.18
Dec 2023Marathon Oil78,00578,01486,70781,494503$71.90$2.52
Nov 2023Marathon Oil73,21673,77187,02682,225269$77.69$2.71
Oct 2023Marathon Oil75,57075,46982,75377,928434$85.64$2.98
Sep 2023Marathon Oil91,17791,20487,64382,390885$89.43$2.64
Aug 2023Marathon Oil98,97899,48389,17083,287851$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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This lease belongs to

OperatorMarathon Oil Ef LLCFieldEagleville (Eagle Ford-1)CountyGonzales County

Marathon Oil Ef LLC in Gonzales County

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Eagleville (Eagle Ford-1) field

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New drilling permits in Gonzales County

We do not have coordinates for this lease, so these are the newest permits in its county.

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 “Oil sold” volume for the month the check covers and multiply it by your decimal. The answer should match the barrels 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, oil lease 15397, district 01, 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.