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Royalty Clerk

Texas oil lease · RRC district 05 · Lease 03503

Producing

COX, M. A.

Cox, M. A. is an oil lease in Henderson County, Texas, operated by Ellis Exploration, Inc. in the Opelika field. The Railroad Commission shows 381 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 2 wells

381bbl oil, last 12 months−11% vs prior year
Operator
Ellis Exploration, Inc.
County
Henderson County
Field
Opelika
RRC lease
05-03503

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Where it sits

This county

Henderson CountyHendersonVan ZandtKaufmanAndersonWoodSmithNavarroRainsCherokeeHenderson County
Henderson County · RRC district 05Open Henderson County →
Gas, last 12 months
6,343 mcf
Oil in Jul 2026
22 bbl
Reporting to the state
since Jan 2020
Wells
2

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 11% over the last 12 months

381 bbl in the 12 months through Jul 2026, against 430 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output fell 11% over the last 12 monthsMonthly oil production and gas for COX, M. A., Aug 2023 to Jul 2026. Oil output fell 11% over the last 12 months. 381 bbl in the 12 months through Jul 2026, against 430 bbl in the 12 months before.Last 12 months: 381 bblbbl per monthmcf per month00202504050060750801,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 11% over the last 12 monthsMonthly oil production and gas for COX, M. A., Aug 2023 to Jul 2026. Oil output fell 11% over the last 12 months. 381 bbl in the 12 months through Jul 2026, against 430 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month00202504050060750801,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 03503, district 05. 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.

All of the gas went to a transmission line in the last 12 months

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

All of the gas went to a transmission line in the last 12 monthsShare of COX, M. A. gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a transmission line in the last 12 months. Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
All of the gas went to a transmission line in the last 12 monthsShare of COX, M. A. gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a transmission line 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 03503, district 05. Reported through Jul 2026.

Transmission line (2)

Sold straight into a pipeline without processing. Processing fees on your statement would be worth asking about.

None of the gas was flared in the last 12 months.

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.

Ellis Exploration, Inc. has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeEllis Exploration, Inc., Jan 2020 to Jul 20262020202120222023202420252026Ellis Exploration, Inc.Jan 2020 to nowthrough Jul 2026
Operators of this lease over timeEllis Exploration, Inc., Jan 2020 to Jul 20262020202120222023202420252026Ellis Exploration, Inc.Jan 2020 to nowthrough Jul 2026

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

Wells

2 wells on this lease

Every well the Railroad Commission links to oil lease 03503 in district 05. The API number is the state’s ID for a well.
Wells on COX, M. A.
API numberWell no.Status
42-213-003083Active
42-213-003121Active

SourceTexas Railroad Commission Wellbore Query, district 05, lease 03503.

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

    Eastex Crude Company, LLC gathers it.

    100% of it, on the list since Sep 1, 2026

Companies that used to be listed: Newfield Exploration Company (gathers it, until Sep 1, 2026); Nominator Not Required / Swr 31 (nominates it, until Sep 1, 2026); Newfield Exploration Company (buys it, until Sep 1, 2026); Plains Marketing, L.p. (gathers it, until Sep 1, 2026).

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

237 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
22 not plugged
Horizontal
0
First completion
Jan 11, 1979
Latest permit
Dec 31, 1979
Wells and acres on the permits for Cox, M. A.
API numberWell no.Acreson the permit
42-213-003121237
42-213-003083–

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 COX, M. A. 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. 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 COX, M. A.
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Ellis Exploration,2206086080$80.46$2.89
Jun 2026Ellis Exploration,2004104100$84.81$3.15
May 2026Ellis Exploration,1904024020$102.13$2.94
Apr 2026Ellis Exploration,1802202200$100.32$2.77
Mar 2026Ellis Exploration,4305335330$91.38$3.04
Feb 2026Ellis Exploration,4405925920$64.51$3.62
Jan 2026Ellis Exploration,471926346340$60.04$7.72
Dec 2025Ellis Exploration,3304804800$57.97$4.26
Nov 2025Ellis Exploration,4806676670$60.06$3.79
Oct 2025Ellis Exploration,3206346340$60.89$3.19
Sep 2025Ellis Exploration,301827477470$63.96$2.97
Aug 2025Ellis Exploration,2504164160$64.86$2.91
Jul 2025Ellis Exploration,3106746740$68.39$3.20
Jun 2025Ellis Exploration,3604894890$68.17$3.02
May 2025Ellis Exploration,4405155150$62.17$3.12
Apr 2025Ellis Exploration,411876136130$63.54$3.42
Mar 2025Ellis Exploration,6007677670$68.24$4.12
Feb 2025Ellis Exploration,4306576570$71.53$4.19
Jan 2025Ellis Exploration,361687297290$75.74$4.13
Dec 2024Ellis Exploration,2806116110$70.12$3.01
Nov 2024Ellis Exploration,2206596590$69.95$2.12
Oct 2024Ellis Exploration,3506416410$71.99$2.20
Sep 2024Ellis Exploration,3907877870$70.24$2.28
Aug 2024Ellis Exploration,1503083080$76.68$1.99
Jul 2024Ellis Exploration,141772612610$81.80$2.07
Jun 2024Ellis Exploration,5407927920$79.77$2.54
May 2024Ellis Exploration,2505365360$80.02$2.12
Apr 2024Ellis Exploration,70000$85.35$1.60
Mar 2024Ellis Exploration,3306986980$81.28$1.49
Feb 2024Ellis Exploration,1307797790$77.25$1.72
Jan 2024Ellis Exploration,2604734730$74.15$3.18
Dec 2023Ellis Exploration,451817487480$71.90$2.52
Nov 2023Ellis Exploration,3506106100$77.69$2.71
Oct 2023Ellis Exploration,5308018010$85.64$2.98
Sep 2023Ellis Exploration,4107297290$89.43$2.64
Aug 2023Ellis Exploration,6086860$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

OperatorEllis Exploration, Inc.FieldOpelikaCountyHenderson County

Ellis Exploration, Inc. in Henderson County

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Opelika field

All leases in this 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 “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 03503, district 05, 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.

FAQ

Questions about COX, M. A.

Who operates the COX, M. A. lease?

The Railroad Commission lists Ellis Exploration, Inc. (operator number 248895) as the operator of this lease in Henderson County, Texas. The operator history on this page shows earlier operators and when the record changed.

How much has the COX, M. A. lease produced?

The lease reported 381 bbl of oil and 6,343 mcf of gas in the last 12 months through Jul 2026. Monthly figures for 36 months are in the ledger on this page, taken from the Railroad Commission's production data.

Does this page show who owns the royalty?

No. Railroad Commission records show who operates a lease and what it reported, not who owns the minerals or receives royalty. Your division order and royalty stub name the lease and your decimal interest.

How do I check my royalty stub against this lease?

Multiply the lease's volume for a month by your decimal interest and compare it with the barrels and mcf on your stub for the same month. The two are seldom identical, since sales and reporting months can differ, but a large gap is worth a question to the operator.

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