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Royalty Clerk

Texas oil lease · RRC district 08 · Lease 64199

Producing

HALFMANN 36F

Halfmann 36F is an oil lease in Glasscock County, Texas, operated by Fed Operating LLC in the Spraberry (Trend Area) field. The Railroad Commission shows 610 bbl of oil in the 10 months reported, Oct 2025 through Jul 2026.

Oil lease dossier

610bbl oil, since Oct 2025
Operator
Fed Operating LLC
County
Glasscock County
Field
Spraberry (Trend Area)
RRC lease
08-64199

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Where it sits

This county

Glasscock CountyGlasscockMitchellMartinSterlingMidlandHowardGlasscock County
Glasscock County · RRC district 08Open Glasscock County →
Gas, since Oct 2025
691 mcf
Oil in Jul 2026
67 bbl
Reporting to the state
since Oct 2025
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 79% since Oct 2025

Monthly average of 93 bbl in the latest 3 months, against 52 bbl in the first 3.

  • Oil (bars, left axis)
  • Gas (line, right axis)
Oil output rose 79% since Oct 2025Monthly oil production and gas for HALFMANN 36F, Oct 2025 to Jul 2026. Oil output rose 79% since Oct 2025. Monthly average of 93 bbl in the latest 3 months, against 52 bbl in the first 3.bbl per monthmcf per month0050100100200150300200400Oct 25Jan 26AprJul
Oil output rose 79% since Oct 2025Monthly oil production and gas for HALFMANN 36F, Oct 2025 to Jul 2026. Oil output rose 79% since Oct 2025. Monthly average of 93 bbl in the latest 3 months, against 52 bbl in the first 3.bbl per monthmcf per month0050100100200150300200400Jan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 64199, district 08. 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 processing plant in the 6 months reported

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

All of the gas went to a processing plant in the 6 months reportedShare of HALFMANN 36F gas by disposition code each month, Oct 2025 to Jul 2026. All of the gas went to a processing plant in the 6 months reported. Share of the lease’s gas by disposition code, per month0%50%100%Oct 25Jan 26AprJul
All of the gas went to a processing plant in the 6 months reportedShare of HALFMANN 36F gas by disposition code each month, Oct 2025 to Jul 2026. All of the gas went to a processing plant in the 6 months reported. Share of gas by disposition code0%50%100%Jan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 64199, district 08. Reported through Jul 2026.

Processing plant (3)

Sent to a gas plant that pulls out natural gas liquids. Your statement should show plant products, and may show processing fees.

None of the gas was flared in the 6 months reported.

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.

Fed Operating LLC has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeFed Operating LLC, Oct 2025 to Jul 20262026Fed Operating LLCOct 2025 to nowthrough Jul 2026
Operators of this lease over timeFed Operating LLC, Oct 2025 to Jul 20262026Fed Operating LLCOct 2025 to nowthrough Jul 2026

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

Wells

Wells on this lease

Every well the Railroad Commission links to oil lease 64199 in district 08. The API number is the state’s ID for a well.

No wells are linked to this lease in our data

Older leases and some gas wells are filed without well records. Production is still reported at lease level, so the charts and ledger on this page are unaffected.

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

    Bml, Inc. B gathers it.

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

  • Gas from oil wells

    Targa Midstream Services LLC buys and gathers it.

    Targa Midstream Services LLC buys it: 100% of it, on the list since Oct 1, 2025 · Targa Midstream Services LLC gathers it: 100% of it, on the list since Oct 1, 2025

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

320.13 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
0
First completion
Feb 20, 2014
Latest permit
Jan 6, 2014
Wells and acres on the permits for Halfmann 36F
API numberWell no.Acreson the permit
42-173-362097320.13

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 HALFMANN 36F 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 10 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

10 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 HALFMANN 36F
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Fed Operating67086860$80.46$2.89
Jun 2026Fed Operating861781031030$84.81$3.15
May 2026Fed Operating12502652650$102.13$2.94
Apr 2026Fed Operating177182000$100.32$2.77
Mar 2026Fed Operating00000$91.38$3.04
Feb 2026Fed Operating00000$64.51$3.62
Jan 2026Fed Operating00000$60.04$7.72
Dec 2025Fed Operating6118673730$57.97$4.26
Nov 2025Fed Operating47081810$60.06$3.79
Oct 2025Fed Operating47083830$60.89$3.19

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 HALFMANN 36F. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Fed Operating LLC.

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  • Fees taken on gas
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Around this lease

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

This lease belongs to

OperatorFed Operating LLCFieldSpraberry (Trend Area)CountyGlasscock County

Fed Operating LLC in Glasscock County

All Fed Operating LLC leases →

Spraberry (Trend Area) field

All leases in this field →

New drilling permits in Glasscock County

We do not have coordinates for this lease, so these are the newest permits in its county.

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 64199, district 08, 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.