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Royalty Clerk

Texas oil lease · RRC district 09 · Lease 31630

Producing

IRBY

Irby is an oil lease in Grayson County, Texas, operated by Atoka Energy LLC in the Big Mineral Creek (Viola) field. The Railroad Commission shows 356 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 1 well

356bbl oil, last 12 months+15% vs prior year
Operator
Atoka Energy LLC
County
Grayson County
Field
Big Mineral Creek (Viola)
RRC lease
09-31630

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Where it sits

This county

Grayson CountyGraysonCookeFanninGrayson County
Grayson County · RRC district 09Open Grayson County →
Gas, last 12 months
9,659 mcf
Oil in Jul 2026
93 bbl
Reporting to the state
since Jan 2020
Wells
1

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 15% over the last 12 months

356 bbl in the 12 months through Jul 2026, against 310 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output rose 15% over the last 12 monthsMonthly oil production and gas for IRBY, Aug 2023 to Jul 2026. Oil output rose 15% over the last 12 months. 356 bbl in the 12 months through Jul 2026, against 310 bbl in the 12 months before.Last 12 months: 356 bblbbl per monthmcf per month00505001001,0001501,5002002,0002502,500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 15% over the last 12 monthsMonthly oil production and gas for IRBY, Aug 2023 to Jul 2026. Oil output rose 15% over the last 12 months. 356 bbl in the 12 months through Jul 2026, against 310 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month00505001001,0001501,5002002,0002502,500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 31630, 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.

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 IRBY 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 IRBY 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 31630, district 09. 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.

The operator changed 2 times, most recently in Jul 2026

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 timeAtoka Operating, Inc., Jan 2020 to Apr 2023; Tatanka Operating, LLC, May 2023 to Jun 2026; Atoka Energy LLC, Jul 2026 to Jul 20262020202120222023202420252026Changed May 2023Changed Jul 2026Atoka Operating, Inc.Jan 2020 to Apr 2023Tatanka Operating, LLCMay 2023 to Jun 2026Atoka Energy LLCJul 2026 to now
Operators of this lease over timeAtoka Operating, Inc., Jan 2020 to Apr 2023; Tatanka Operating, LLC, May 2023 to Jun 2026; Atoka Energy LLC, Jul 2026 to Jul 20262020202120222023202420252026Changed May 2023Changed Jul 2026Atoka Operating, Inc.Jan 2020 to Apr 2023Tatanka Operating, LLCMay 2023 to Jun 2026Atoka Energy LLCJul 2026 to now

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 31630 in district 09. The API number is the state’s ID for a well.
Wells on IRBY
API numberWell no.Status
42-181-314493Active

SourceTexas Railroad Commission Wellbore Query, district 09, lease 31630.

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

    Ptt Premier Trading and Tran LLC gathers it.

    100% of it, on the list since Nov 1, 2023

  • Gas from oil wells

    Branch Energy Partners, LLC buys and gathers it.

    Branch Energy Partners, LLC buys it: 100% of it, on the list since Nov 1, 2019 · Branch Energy Partners, LLC gathers it: 100% of it, on the list since Nov 1, 2019

Companies that used to be listed: Gulfmark Energy, Inc. (gathers it, until Nov 1, 2023); Semgas, L.p. (gathers it, until Nov 1, 2019); Semgas, L.p. (buys it, until Nov 1, 2019).

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

337.50 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
May 20, 2010
Latest permit
May 26, 2009
Wells and acres on the permits for Irby
API numberWell no.Acreson the permit
42-181-314493337.50

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 IRBY 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 IRBY
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Atoka Energy9301,0571,0570$80.46$2.89
Jun 2026Tatanka Operating,2151889239230$84.81$3.15
May 2026Tatanka Operating,301,4171,4170$102.13$2.94
Apr 2026Tatanka Operating,308738730$100.32$2.77
Mar 2026Tatanka Operating,706186180$91.38$3.04
Feb 2026Tatanka Operating,805585580$64.51$3.62
Jan 2026Tatanka Operating,205925920$60.04$7.72
Dec 2025Tatanka Operating,206456450$57.97$4.26
Nov 2025Tatanka Operating,1001,0711,0710$60.06$3.79
Oct 2025Tatanka Operating,807207200$60.89$3.19
Sep 2025Tatanka Operating,205495490$63.96$2.97
Aug 2025Tatanka Operating,306366360$64.86$2.91
Jul 2025Tatanka Operating,251878078070$68.39$3.20
Jun 2025Tatanka Operating,401,0651,0650$68.17$3.02
May 2025Tatanka Operating,506336330$62.17$3.12
Apr 2025Tatanka Operating,505885880$63.54$3.42
Mar 2025Tatanka Operating,506456450$68.24$4.12
Feb 2025Tatanka Operating,2111816106100$71.53$4.19
Jan 2025Tatanka Operating,1007417410$75.74$4.13
Dec 2024Tatanka Operating,009979970$70.12$3.01
Nov 2024Tatanka Operating,001,0391,0390$69.95$2.12
Oct 2024Tatanka Operating,001,2241,2240$71.99$2.20
Sep 2024Tatanka Operating,4509879870$70.24$2.28
Aug 2024Tatanka Operating,007767760$76.68$1.99
Jul 2024Tatanka Operating,008598590$81.80$2.07
Jun 2024Tatanka Operating,008498490$79.77$2.54
May 2024Tatanka Operating,301761,0431,0430$80.02$2.12
Apr 2024Tatanka Operating,15401,2521,2520$85.35$1.60
Mar 2024Tatanka Operating,2201,2401,2400$81.28$1.49
Feb 2024Tatanka Operating,2506036030$77.25$1.72
Jan 2024Tatanka Operating,008128120$74.15$3.18
Dec 2023Tatanka Operating,701,2241,2240$71.90$2.52
Nov 2023Tatanka Operating,1893661,7771,7770$77.69$2.71
Oct 2023Tatanka Operating,107387380$85.64$2.98
Sep 2023Tatanka Operating,507107100$89.43$2.64
Aug 2023Tatanka Operating,407257250$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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Everything on this page connects to the operator, field and county records. Start from any of them.

This lease belongs to

OperatorAtoka Energy LLCFieldBig Mineral Creek (Viola)CountyGrayson County

Atoka Energy LLC in Grayson County

All Atoka Energy LLC leases →

Big Mineral Creek (Viola) field

All leases in this field →

Leases within 10 km

Found by the location of their wells.

  • IRBY

    8,363 mcf last 12 months · 0 km away

  • IRBY

    1,616 bbl last 12 months · 0.6 km away

  • IRBY

    26,728 mcf last 12 months · 0.8 km away

  • HAZLIP

    155 bbl last 12 months · 1.1 km away

  • HAZELWOOD

    7,236 bbl last 12 months · 1.1 km away

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 31630, 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.

FAQ

Questions about IRBY

Who operates the IRBY lease?

The Railroad Commission lists Atoka Energy LLC (operator number 101705) as the operator of this lease in Grayson County, Texas. The operator history on this page shows earlier operators and when the record changed.

How much has the IRBY lease produced?

The lease reported 356 bbl of oil and 9,659 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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