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Royalty Clerk

Texas oil lease · RRC district 01 · Lease 15273

Producing

MOSTYN

Mostyn is an oil lease in Gonzales County, Texas, operated by Modern Exploration, Inc. in the Eagleville (Eagle Ford-1) field. The Railroad Commission shows 1,249 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 1 well

1,249bbl oil, last 12 months−24% vs prior year
Operator
Modern Exploration, Inc.
County
Gonzales County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15273

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Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County · RRC district 01Open Gonzales County →
Oil in Jul 2026
104 bbl
Reporting to the state
since Jan 2020
Wells
1
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 24% over the last 12 months

1,249 bbl in the 12 months through Jul 2026, against 1,646 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Last 12 months
Oil output fell 24% over the last 12 monthsMonthly oil production for MOSTYN, Aug 2023 to Jul 2026. Oil output fell 24% over the last 12 months. 1,249 bbl in the 12 months through Jul 2026, against 1,646 bbl in the 12 months before.Last 12 months: 1,249 bblbbl per month0100200300400Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 24% over the last 12 monthsMonthly oil production for MOSTYN, Aug 2023 to Jul 2026. Oil output fell 24% over the last 12 months. 1,249 bbl in the 12 months through Jul 2026, against 1,646 bbl in the 12 months before.Last 12 monthsbbl per month0100200300400Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 15273, 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.

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.

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

No change of operator in the months we hold.

Operators of this lease over timeModern Exploration, Inc., Jan 2020 to Jul 20262020202120222023202420252026Modern Exploration, Inc.Jan 2020 to nowthrough Jul 2026
Operators of this lease over timeModern Exploration, Inc., Jan 2020 to Jul 20262020202120222023202420252026Modern Exploration, Inc.Jan 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 oil lease 15273 in district 01. The API number is the state’s ID for a well.
Wells on MOSTYN
API numberWell no.Status
42-177-317891HActive

SourceTexas Railroad Commission Wellbore Query, district 01, lease 15273.

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

    Plains Marketing, L.p. gathers it.

    100% of it, on the list since Dec 1, 2025

Companies that used to be listed: Energy Trans Crude Marketing LLC (gathers it, until Dec 1, 2025); Enterprise Crude Oil LLC (gathers it, until Dec 12, 2024); Genesis Crude Oil, L.p. (gathers it, until Dec 12, 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

384.85 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
Aug 7, 1999
Latest permit
Feb 5, 2010

A pooling certificate was filed

Your tract may share its production with neighbours in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one permit.

Wells and acres on the permits for Mostyn
API numberWell no.Acreson the permit
42-177-317891H384.85

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

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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 MOSTYN 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.

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 MOSTYN
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jul 2026Modern Exploration,104163$80.46$2.89
Jun 2026Modern Exploration,3178$84.81$3.15
May 2026Modern Exploration,2010$102.13$2.94
Apr 2026Modern Exploration,140172$100.32$2.77
Mar 2026Modern Exploration,123183$91.38$3.04
Feb 2026Modern Exploration,126192$64.51$3.62
Jan 2026Modern Exploration,540$60.04$7.72
Dec 2025Modern Exploration,145188$57.97$4.26
Nov 2025Modern Exploration,650$60.06$3.79
Oct 2025Modern Exploration,118168$60.89$3.19
Sep 2025Modern Exploration,1000$63.96$2.97
Aug 2025Modern Exploration,70169$64.86$2.91
Jul 2025Modern Exploration,171166$68.39$3.20
Jun 2025Modern Exploration,93168$68.17$3.02
May 2025Modern Exploration,1440$62.17$3.12
Apr 2025Modern Exploration,114151$63.54$3.42
Mar 2025Modern Exploration,117167$68.24$4.12
Feb 2025Modern Exploration,151171$71.53$4.19
Jan 2025Modern Exploration,164169$75.74$4.13
Dec 2024Modern Exploration,1620$70.12$3.01
Nov 2024Modern Exploration,52194$69.95$2.12
Oct 2024Modern Exploration,261178$71.99$2.20
Sep 2024Modern Exploration,490$70.24$2.28
Aug 2024Modern Exploration,168365$76.68$1.99
Jul 2024Modern Exploration,318170$81.80$2.07
Jun 2024Modern Exploration,129170$79.77$2.54
May 2024Modern Exploration,161187$80.02$2.12
Apr 2024Modern Exploration,140183$85.35$1.60
Mar 2024Modern Exploration,1540$81.28$1.49
Feb 2024Modern Exploration,154364$77.25$1.72
Jan 2024Modern Exploration,1750$74.15$3.18
Dec 2023Modern Exploration,138193$71.90$2.52
Nov 2023Modern Exploration,175185$77.69$2.71
Oct 2023Modern Exploration,340$85.64$2.98
Sep 2023Modern Exploration,276182$89.43$2.64
Aug 2023Modern Exploration,151182$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

OperatorModern Exploration, Inc.FieldEagleville (Eagle Ford-1)CountyGonzales County

Modern Exploration, Inc. in Gonzales County

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Eagleville (Eagle Ford-1) 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 15273, 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.