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Royalty Clerk

Texas oil lease · RRC district 03 · Lease 11431

Producing

CLARK

Clark is an oil lease in Jefferson County, Texas, operated by Rheaco Oil Company, Ltd. in the Spindletop field. The Railroad Commission shows 5,112 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 25 wells

5,112bbl oil, last 12 months−14% vs prior year
Operator
Rheaco Oil Company, Ltd.
County
Jefferson County
Field
Spindletop
RRC lease
03-11431

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Where it sits

This county

Jefferson CountyJeffersonOrangeChambersHardinLibertyJefferson County
Jefferson County · RRC district 03Open Jefferson County →
Oil in Jul 2026
472 bbl
Reporting to the state
since Jan 2020
Wells
25
Data through
Jul 2026

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 14% over the last 12 months

5,112 bbl in the 12 months through Jul 2026, against 5,971 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Last 12 months
Oil output fell 14% over the last 12 monthsMonthly oil production for CLARK, Aug 2023 to Jul 2026. Oil output fell 14% over the last 12 months. 5,112 bbl in the 12 months through Jul 2026, against 5,971 bbl in the 12 months before.Last 12 months: 5,112 bblbbl per month0200400600800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 14% over the last 12 monthsMonthly oil production for CLARK, Aug 2023 to Jul 2026. Oil output fell 14% over the last 12 months. 5,112 bbl in the 12 months through Jul 2026, against 5,971 bbl in the 12 months before.Last 12 monthsbbl per month0200400600800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 11431, district 03. 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.

No gas disposition reported for this lease

The operator has not reported where the gas went in the months we hold.

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.

Rheaco Oil Company, Ltd. has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeRheaco Oil Company, Ltd., Jan 2020 to Jul 20262020202120222023202420252026Rheaco Oil Company, Ltd.Jan 2020 to nowthrough Jul 2026
Operators of this lease over timeRheaco Oil Company, Ltd., Jan 2020 to Jul 20262020202120222023202420252026Rheaco Oil Company, Ltd.Jan 2020 to nowthrough Jul 2026

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

Wells

25 wells on this lease

Every well the Railroad Commission links to oil lease 11431 in district 03. The API number is the state’s ID for a well.
Wells on CLARK
API numberWell no.Status
42-245-0094618Active
42-245-0094719Active
42-245-0095440Active
42-245-3136536Active
42-245-3180538Active
42-245-3185739Active
42-245-3193641Active
42-245-3200744Active
42-245-3200843Active
42-245-3246842Active
42-245-3248743AShut-in
42-245-3251846Active
42-245-3251944AShut-in
42-245-3252045AActive
42-245-3252147Active
42-245-3259348Active
42-245-3259550Active
42-245-3271749Active
42-245-3276151Active
42-245-3276352Active
42-245-3278754Active
42-245-3278855Active
42-245-3282156Active
42-245-8132132Active
42-245-8132334Active

SourceTexas Railroad Commission Wellbore Query, district 03, lease 11431.

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.

  • Oil

    Energy Trans Crude Marketing LLC and Energy Transfer Marketing & Term gather it.

    Energy Trans Crude Marketing LLC gathers it: 50% of it, on the list since Jul 1, 2021 · Energy Transfer Marketing & Term gathers it: 50% of it, on the list since Dec 1, 2022

Companies that used to be listed: Sunoco Ptnrs. Mktg.&terminals LP (gathers it, until Dec 1, 2022); Sunoco Ptnrs. Mktg.&terminals LP (gathers it, until Jul 1, 2021); Shell Trading (Us) Company (gathers it, until Oct 1, 2020); Sunoco Ptnrs. Mktg.&terminals LP (gathers it, until Oct 1, 2020).

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

39.50 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
2714 not plugged
Horizontal
0
First completion
Feb 25, 1977
Latest permit
Aug 6, 2014

The wells on this lease state different acreage

The permits state between 39.5 and 59.23 acres. Use the acres from your own division order for the well you are paid on.

27 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.

Wells and acres on the permits for Clark
API numberWell no.Acreson the permit
42-245-328215639.50
42-245-327875439.50
42-245-327885539.50
42-245-327635239.50
42-245-327615139.50
42-245-327174939.50
42-245-325955039.50
42-245-325934839.50
42-245-3252045A39.50
42-245-325214739.50
42-245-325184639.50
42-245-3251944A39.50

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.

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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 CLARK 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.

Your estimate appears here

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.

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 CLARK
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jul 2026Rheaco Oil472506$80.46$2.89
Jun 2026Rheaco Oil456414$84.81$3.15
May 2026Rheaco Oil291405$102.13$2.94
Apr 2026Rheaco Oil543528$100.32$2.77
Mar 2026Rheaco Oil434537$91.38$3.04
Feb 2026Rheaco Oil517406$64.51$3.62
Jan 2026Rheaco Oil474409$60.04$7.72
Dec 2025Rheaco Oil497548$57.97$4.26
Nov 2025Rheaco Oil3649$60.06$3.79
Oct 2025Rheaco Oil454400$60.89$3.19
Sep 2025Rheaco Oil481549$63.96$2.97
Aug 2025Rheaco Oil457410$64.86$2.91
Jul 2025Rheaco Oil447582$68.39$3.20
Jun 2025Rheaco Oil550408$68.17$3.02
May 2025Rheaco Oil522539$62.17$3.12
Apr 2025Rheaco Oil505545$63.54$3.42
Mar 2025Rheaco Oil679674$68.24$4.12
Feb 2025Rheaco Oil491421$71.53$4.19
Jan 2025Rheaco Oil486541$75.74$4.13
Dec 2024Rheaco Oil645689$70.12$3.01
Nov 2024Rheaco Oil445405$69.95$2.12
Oct 2024Rheaco Oil335275$71.99$2.20
Sep 2024Rheaco Oil417534$70.24$2.28
Aug 2024Rheaco Oil449409$76.68$1.99
Jul 2024Rheaco Oil440404$81.80$2.07
Jun 2024Rheaco Oil394274$79.77$2.54
May 2024Rheaco Oil393538$80.02$2.12
Apr 2024Rheaco Oil471406$85.35$1.60
Mar 2024Rheaco Oil562543$81.28$1.49
Feb 2024Rheaco Oil520552$77.25$1.72
Jan 2024Rheaco Oil312273$74.15$3.18
Dec 2023Rheaco Oil510423$71.90$2.52
Nov 2023Rheaco Oil324411$77.69$2.71
Oct 2023Rheaco Oil627682$85.64$2.98
Sep 2023Rheaco Oil669682$89.43$2.64
Aug 2023Rheaco Oil658548$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

OperatorRheaco Oil Company, Ltd.FieldSpindletopCountyJefferson County

Rheaco Oil Company, Ltd. in Jefferson County

All Rheaco Oil Company, Ltd. leases →

Spindletop field

All leases in this field →

Leases within 10 km

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 “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 11431, district 03, 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.