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Royalty Clerk

Texas oil lease · RRC district 01 · Lease 04586

No report in 6+ months

HALFF & OPPENHEIMER -C-

Halff & Oppenheimer -C- is an oil lease in Frio County, Texas, operated by Maverick Energy Group, Inc. in the Pearsall (Austin Chalk) field.

Oil lease dossier · 4 wells

0bbl oil, last 12 months
Operator
Maverick Energy Group, Inc.
County
Frio County
Field
Pearsall (Austin Chalk)
RRC lease
01-04586

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Where it sits

This county

Frio CountyFrioZavalaAtascosaUvaldeMedinaBexarFrio County
Frio County · RRC district 01Open Frio County →
Oil in Jun 2024
0 bbl
Reporting to the state
since Jan 2020
Wells
4
Data through
Jun 2024

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).

No production to chart

The state shows zero oil and zero gas for all 36 months we hold (Jul 2021 to Jun 2024). A lease that is shut in or newly reported looks like this. The ledger below lists each month.

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.

Maverick Energy Group, Inc. has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeMaverick Energy Group, Inc., Jan 2020 to Jun 202420202021202220232024Maverick Energy Group, Inc.Jan 2020 to nowthrough Jun 2024
Operators of this lease over timeMaverick Energy Group, Inc., Jan 2020 to Jun 202420202021202220232024Maverick Energy Group, Inc.Jan 2020 to nowthrough Jun 2024

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

Wells

4 wells on this lease

Every well the Railroad Commission links to oil lease 04586 in district 01. The API number is the state’s ID for a well.
Wells on HALFF & OPPENHEIMER -C-
API numberWell no.Status
42-163-300941Active
42-163-301342Active
42-163-301803Active
42-163-303864Active

SourceTexas Railroad Commission Wellbore Query, district 01, lease 04586.

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

    Shell Trading (Us) Company gathers it.

    100% of it, on the list since Feb 7, 2018

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

320 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
60 not plugged
Horizontal
0
First completion
Oct 13, 1974
Latest permit
Jun 19, 1984
Wells and acres on the permits for Halff & Oppenheimer -C-
API numberWell no.Acreson the permit
42-163-300941320
42-163-301342–
42-163-301803–
42-163-301803C–
42-163-303864–
42-163-303864 C–

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 HALFF & OPPENHEIMER -C- sold each month.

For example 0.00097656, or a fraction like 1/1024.

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 HALFF & OPPENHEIMER -C-
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jun 2024Maverick Energy00$79.77$2.54
May 2024Maverick Energy00$80.02$2.12
Apr 2024Maverick Energy00$85.35$1.60
Mar 2024Maverick Energy00$81.28$1.49
Feb 2024Maverick Energy00$77.25$1.72
Jan 2024Maverick Energy00$74.15$3.18
Dec 2023Maverick Energy00$71.90$2.52
Nov 2023Maverick Energy00$77.69$2.71
Oct 2023Maverick Energy00$85.64$2.98
Sep 2023Maverick Energy00$89.43$2.64
Aug 2023Maverick Energy00$81.39$2.58
Jul 2023Maverick Energy00$76.07$2.55
Jun 2023Maverick Energy00$70.25$2.18
May 2023Maverick Energy00$71.58$2.15
Apr 2023Maverick Energy00$79.45$2.16
Mar 2023Maverick Energy00$73.28$2.31
Feb 2023Maverick Energy00$76.83$2.38
Jan 2023Maverick Energy00$78.12$3.27
Dec 2022Maverick Energy00$76.44$5.53
Nov 2022Maverick Energy00$84.37$5.45
Oct 2022Maverick Energy00$87.55$5.66
Sep 2022Maverick Energy00$84.26$7.88
Aug 2022Maverick Energy00$93.67$8.81
Jul 2022Maverick Energy00$101.62$7.28
Jun 2022Maverick Energy00$114.84$7.70
May 2022Maverick Energy00$109.55$8.14
Apr 2022Maverick Energy00$101.78$6.60
Mar 2022Maverick Energy00$108.50$4.90
Feb 2022Maverick Energy00$91.64$4.69
Jan 2022Maverick Energy00$83.22$4.38
Dec 2021Maverick Energy00$71.71$3.76
Nov 2021Maverick Energy00$79.15$5.05
Oct 2021Maverick Energy00$81.48$5.51
Sep 2021Maverick Energy00$71.65$5.16
Aug 2021Maverick Energy00$67.73$4.07
Jul 2021Maverick Energy00$72.49$3.84

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

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Upload your statements for HALFF & OPPENHEIMER -C-. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Maverick Energy Group, Inc.

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  • A month that was never paid
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  • Fees taken on gas
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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

OperatorMaverick Energy Group, Inc.FieldPearsall (Austin Chalk)CountyFrio County

Maverick Energy Group, Inc. in Frio County

No other producing leases from this operator in this county are in our data yet.

Pearsall (Austin Chalk) 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 Jun 2024?

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 04586, 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.