Skip to content
Royalty Clerk

Texas oil lease · RRC district 09 · Lease 03359

Producing

HENDERSON

Henderson is an oil lease in Jack County, Texas, operated by Mammoth Operating LLC in the Jack County Regular field. The Railroad Commission shows 353 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 29 wells

353bbl oil, last 12 months+58% vs prior year
Operator
Mammoth Operating LLC
County
Jack County
Field
Jack County Regular
RRC lease
09-03359

Own a share of this lease?

Is your check right?

Upload a check stub or a phone photo. We compare every month with the state numbers on this page.

Check my statement

Free. No account needed. Two to four pages.

Where it sits

This county

Jack CountyJackWiseClayMontagueYoungArcherJack County
Jack County · RRC district 09Open Jack County →
Oil in Jul 2026
23 bbl
Reporting to the state
since Jan 2020
Wells
29
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 rose 58% over the last 12 months

353 bbl in the 12 months through Jul 2026, against 223 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Last 12 months
Oil output rose 58% over the last 12 monthsMonthly oil production for HENDERSON, Aug 2023 to Jul 2026. Oil output rose 58% over the last 12 months. 353 bbl in the 12 months through Jul 2026, against 223 bbl in the 12 months before.Last 12 months: 353 bblbbl per month01020304050Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 58% over the last 12 monthsMonthly oil production for HENDERSON, Aug 2023 to Jul 2026. Oil output rose 58% over the last 12 months. 353 bbl in the 12 months through Jul 2026, against 223 bbl in the 12 months before.Last 12 monthsbbl per month01020304050Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 03359, district 09. 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.

The operator changed once, most recently in Oct 2024

If your statements skip or shrink around a change, ask the new operator's owner relations department whether the month is in suspense.

Operators of this lease over timeWineglass Production, LLC, Jan 2020 to Sep 2024; Mammoth Operating LLC, Oct 2024 to Jul 20262020202120222023202420252026Changed Oct 2024Wineglass Production, LLCJan 2020 to Sep 2024Mammoth Operating LLCOct 2024 to now
Operators of this lease over timeWineglass Production, LLC, Jan 2020 to Sep 2024; Mammoth Operating LLC, Oct 2024 to Jul 20262020202120222023202420252026Changed Oct 2024Wineglass Production, LLCJan 2020 to Sep 2024Mammoth Operating LLCOct 2024 to now

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

Wells

29 wells on this lease

Every well the Railroad Commission links to oil lease 03359 in district 09. The API number is the state’s ID for a well.
Wells on HENDERSON
API numberWell no.Status
42-237-089091Active
42-237-089102Active
42-237-089135Active
42-237-089146Active
42-237-089157Active
42-237-0891610Active
42-237-098038Active
42-237-394511CActive
42-237-394522CActive
42-237-394533CActive
42-237-394544CActive
42-237-394555CActive
42-237-394566CActive
42-237-394577CActive
42-237-394588CActive
42-237-394599CActive
42-237-3946010CActive
42-237-3946111CActive
42-237-3946213CActive
42-237-3946312CActive
42-237-3946414CActive
42-237-3946517CActive
42-237-3946615CActive
42-237-3946716CActive
42-237-812143Active
42-237-812154Shut-in
42-237-812209Shut-in
42-237-8122211Active
42-237-8122312Active

SourceTexas Railroad Commission Wellbore Query, district 09, lease 03359.

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

    Transoil Marketing, LLC gathers it.

    100% of it, on the list since Jul 1, 2024

Companies that used to be listed: Sentinel Transportation, LLC (gathers it, until Jul 1, 2024).

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

100 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
2920 not plugged
Horizontal
0
First completion
Jul 13, 1956
Latest permit
Aug 29, 2011

29 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 Henderson
API numberWell no.Acreson the permit
42-237-394511C100
42-237-394522C100
42-237-394533C100
42-237-394544C100
42-237-394577C100
42-237-3946517C100
42-237-3946716C100
42-237-394555C100
42-237-394566C100
42-237-394588C100
42-237-394599C100
42-237-3946010C100

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

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 HENDERSON 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 HENDERSON
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jul 2026Mammoth Operating230$80.46$2.89
Jun 2026Mammoth Operating2551$84.81$3.15
May 2026Mammoth Operating430$102.13$2.94
Apr 2026Mammoth Operating2663$100.32$2.77
Mar 2026Mammoth Operating330$91.38$3.04
Feb 2026Mammoth Operating29101$64.51$3.62
Jan 2026Mammoth Operating50$60.04$7.72
Dec 2025Mammoth Operating270$57.97$4.26
Nov 2025Mammoth Operating46102$60.06$3.79
Oct 2025Mammoth Operating380$60.89$3.19
Sep 2025Mammoth Operating400$63.96$2.97
Aug 2025Mammoth Operating1858$64.86$2.91
Jul 2025Mammoth Operating110$68.39$3.20
Jun 2025Mammoth Operating70$68.17$3.02
May 2025Mammoth Operating150$62.17$3.12
Apr 2025Mammoth Operating1057$63.54$3.42
Mar 2025Mammoth Operating150$68.24$4.12
Feb 2025Mammoth Operating130$71.53$4.19
Jan 2025Mammoth Operating300$75.74$4.13
Dec 2024Mammoth Operating2896$70.12$3.01
Nov 2024Mammoth Operating360$69.95$2.12
Oct 2024Mammoth Operating370$71.99$2.20
Sep 2024Wineglass Production,00$70.24$2.28
Aug 2024Wineglass Production,2161$76.68$1.99
Jul 2024Wineglass Production,210$81.80$2.07
Jun 2024Wineglass Production,200$79.77$2.54
May 2024Wineglass Production,210$80.02$2.12
Apr 2024Wineglass Production,210$85.35$1.60
Mar 2024Wineglass Production,00$81.28$1.49
Feb 2024Wineglass Production,00$77.25$1.72
Jan 2024Wineglass Production,00$74.15$3.18
Dec 2023Wineglass Production,00$71.90$2.52
Nov 2023Wineglass Production,00$77.69$2.71
Oct 2023Wineglass Production,00$85.64$2.98
Sep 2023Wineglass Production,00$89.43$2.64
Aug 2023Wineglass Production,00$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).

Check your statements

Do your checks match this lease?

Upload your statements for HENDERSON. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Mammoth Operating LLC.

Check my statementTry a sample owner
  • A month that was never paid
  • Your share of the barrels and mcf
  • The price against WTI and Henry Hub
  • Fees taken on gas
  • Late payment interest

Around this lease

Walk the neighborhood

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

This lease belongs to

OperatorMammoth Operating LLCFieldJack County RegularCountyJack County

Mammoth Operating LLC in Jack County

All Mammoth Operating LLC leases →

Jack County Regular 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 03359, district 09, 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.