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Royalty Clerk

Texas oil lease · RRC district 7C · Lease 21791

Producing

MAYER A

Mayer A is an oil lease in Irion County, Texas, operated by Sem Operating Company LLC in the Lin (Wolfcamp) field. The Railroad Commission shows 10,843 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 3 wells

10,843bbl oil, last 12 months−34% vs prior year
Operator
Sem Operating Company LLC
County
Irion County
Field
Lin (Wolfcamp)
RRC lease
7C-21791

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Where it sits

This county

Irion CountyIrionTom GreenSchleicherSterlingGlasscockReaganCokeIrion County
Irion County · RRC district 7COpen Irion County →
Gas, last 12 months
656,172 mcf
Oil in Jul 2026
719 bbl
Reporting to the state
since Aug 2022
Wells
3

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 34% over the last 12 months

10,843 bbl in the 12 months through Jul 2026, against 16,421 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output fell 34% over the last 12 monthsMonthly oil production and gas for MAYER A, Aug 2023 to Jul 2026. Oil output fell 34% over the last 12 months. 10,843 bbl in the 12 months through Jul 2026, against 16,421 bbl in the 12 months before.Last 12 months: 10,843 bblbbl per monthmcf per month001,00020k2,00040k3,00060k4,00080kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 34% over the last 12 monthsMonthly oil production and gas for MAYER A, Aug 2023 to Jul 2026. Oil output fell 34% over the last 12 months. 10,843 bbl in the 12 months through Jul 2026, against 16,421 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,00020k2,00040k3,00060k4,00080kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 21791, district 7C. 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.

Over 99% of the gas went to a processing plant in the last 12 months

Flaring peaked at 3.7% of the gas in Sep 2023.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Over 99% of the gas went to a processing plant in the last 12 monthsShare of MAYER A gas by disposition code each month, Aug 2023 to Jul 2026. Over 99% of the gas went to a processing plant in the last 12 months. Flaring peaked at 3.7% of the gas in Sep 2023.Share of the lease’s gas by disposition code, per month0%50%100%Flared 3.7%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Over 99% of the gas went to a processing plant in the last 12 monthsShare of MAYER A gas by disposition code each month, Aug 2023 to Jul 2026. Over 99% of the gas went to a processing plant in the last 12 months. Flaring peaked at 3.7% of the gas in Sep 2023.Share of gas by disposition code0%50%100%Flared 3.7%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 21791, district 7C. 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.

Lease fuel (1)

Burned to run equipment on the lease. Not sold, so it pays no royalty. A few percent is normal.

Flared (4)

Burned off or vented, not sold. It pays no royalty. More than 3% in a month is worth watching.

None of the gas was flared in the last 12 months. One month went above 3%, which we mark in the ledger below.

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.

Sem Operating Company LLC has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeSem Operating Company LLC, Aug 2022 to Jul 20262023202420252026Sem Operating Company LLCAug 2022 to nowthrough Jul 2026
Operators of this lease over timeSem Operating Company LLC, Aug 2022 to Jul 20262023202420252026Sem Operating Company LLCAug 2022 to nowthrough Jul 2026

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

Wells

3 wells on this lease

Every well the Railroad Commission links to oil lease 21791 in district 7C. The API number is the state’s ID for a well.
Wells on MAYER A
API numberWell no.Status
42-235-365094501WBShut-in
42-235-365104501WCShut-in
42-235-365114503WCShut-in

SourceTexas Railroad Commission Wellbore Query, district 7C, lease 21791.

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 Aug 4, 2022

  • Gas from oil wells

    Canes Midstream G&p LLC and Dcp Operating Company, LP buy and gather it; Et Gathering & Processing LLC buys it; Energy Transfer Company gathers it.

    Canes Midstream G&p LLC buys it: 34% of it, on the list since Sep 1, 2024 · Dcp Operating Company, LP buys it: 33% of it, on the list since Aug 4, 2022 · Et Gathering & Processing LLC buys it: 33% of it, on the list since Sep 1, 2024 · Canes Midstream G&p LLC gathers it: 34% of it, on the list since Sep 1, 2024 · Dcp Operating Company, LP gathers it: 33% of it, on the list since Aug 4, 2022 · Energy Transfer Company gathers it: 33% of it, on the list since Sep 1, 2024

Companies that used to be listed: Canes Midstream G&p LLC (gathers it, until Sep 1, 2024); Wtg South Permian Midstream LLC (gathers it, until Sep 1, 2024); Canes Midstream G&p LLC (buys it, until Sep 1, 2024); Wtg South Permian Midstream LLC (buys it, until Sep 1, 2024); Canes Midstream G&p LLC (gathers it, until Oct 10, 2023); Wtg South Permian Midstream LLC (gathers it, until Oct 10, 2023).

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

758.37 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
33 not plugged
Horizontal
3
First completion
Aug 4, 2022
Latest permit
Feb 2, 2022
Wells and acres on the permits for Mayer A
API numberWell no.Acreson the permit
42-235-365094501WB758.37
42-235-365104501WC758.37
42-235-365114503WC758.37

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

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 MAYER 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.

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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. 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 MAYER A
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Sem Operating71961953,85453,5380$80.46$2.89
Jun 2026Sem Operating68479154,38554,1190$84.81$3.15
May 2026Sem Operating77582253,62253,3600$102.13$2.94
Apr 2026Sem Operating81679954,71054,4780$100.32$2.77
Mar 2026Sem Operating70169546,48946,4550$91.38$3.04
Feb 2026Sem Operating88799448,73348,7330$64.51$3.62
Jan 2026Sem Operating1,12293655,60255,6020$60.04$7.72
Dec 2025Sem Operating1,1081,23954,97354,9730$57.97$4.26
Nov 2025Sem Operating1,07594954,92154,9210$60.06$3.79
Oct 2025Sem Operating1,0001,11459,09359,0930$60.89$3.19
Sep 2025Sem Operating95080758,25358,2530$63.96$2.97
Aug 2025Sem Operating1,0061,04261,53761,5370$64.86$2.91
Jul 2025Sem Operating1,0001,10860,63560,6350$68.39$3.20
Jun 2025Sem Operating1,02994159,28759,2870$68.17$3.02
May 2025Sem Operating1,1461,18162,67562,6750$62.17$3.12
Apr 2025Sem Operating1,1571,08961,93661,9360$63.54$3.42
Mar 2025Sem Operating1,4101,54165,40265,4020$68.24$4.12
Feb 2025Sem Operating1,2861,25858,12358,1230$71.53$4.19
Jan 2025Sem Operating1,6061,62064,97364,9730$75.74$4.13
Dec 2024Sem Operating1,4971,45566,67866,6780$70.12$3.01
Nov 2024Sem Operating1,6101,64565,49165,4910$69.95$2.12
Oct 2024Sem Operating1,4911,47668,24768,2470$71.99$2.20
Sep 2024Sem Operating1,5781,61270,71570,7150$70.24$2.28
Aug 2024Sem Operating1,6111,53070,71570,7150$76.68$1.99
Jul 2024Sem Operating1,9091,98170,77370,7730$81.80$2.07
Jun 2024Sem Operating1,9621,96167,46767,4670$79.77$2.54
May 2024Sem Operating1,9721,99673,34173,3410$80.02$2.12
Apr 2024Sem Operating2,2882,32471,70271,7020$85.35$1.60
Mar 2024Sem Operating2,1842,10968,94868,9480$81.28$1.49
Feb 2024Sem Operating1,9072,03469,82969,8290$77.25$1.72
Jan 2024Sem Operating2,6352,55674,13474,1340$74.15$3.18
Dec 2023Sem Operating2,5922,69678,57078,5700$71.90$2.52
Nov 2023Sem Operating2,6292,75473,04373,0430$77.69$2.71
Oct 2023Sem Operating3,0462,74476,40676,4060$85.64$2.98
Sep 2023Sem Operating2,7362,76772,78570,1122,673$89.43$2.64
Aug 2023Sem Operating2,7362,78578,60677,632974$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

OperatorSem Operating Company LLCFieldLin (Wolfcamp)CountyIrion County

Sem Operating Company LLC in Irion County

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Lin (Wolfcamp) field

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Leases within 10 km

Found by the location of their wells.

  • MAYER A1

    5,277 bbl last 12 months · 0 km away

  • MAYER

    60,848 bbl last 12 months · 0.3 km away

  • CORONADO

    2,952 bbl last 12 months · 2 km away

  • CORONADO (SA)

    532 bbl last 12 months · 2 km away

  • MAYER 37-2

    0 mcf last 12 months · 2.1 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 21791, district 7C, 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.