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Royalty Clerk

Texas oil lease · RRC district 7C · Lease 18398

Producing

MUNSON B

Munson B is an oil lease in Irion County, Texas, operated by Sem Operating Company LLC in the Lin (Wolfcamp) field. The Railroad Commission shows 6,689 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 8 wells

6,689bbl oil, last 12 months−16% vs prior year
Operator
Sem Operating Company LLC
County
Irion County
Field
Lin (Wolfcamp)
RRC lease
7C-18398

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Where it sits

This county

Irion CountyIrionTom GreenSchleicherSterlingGlasscockReaganCokeIrion County
Irion County · RRC district 7COpen Irion County →
Gas, last 12 months
630,310 mcf
Oil in Jul 2026
435 bbl
Reporting to the state
since Jan 2020
Wells
8

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 16% over the last 12 months

6,689 bbl in the 12 months through Jul 2026, against 7,945 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output fell 16% over the last 12 monthsMonthly oil production and gas for MUNSON B, Aug 2023 to Jul 2026. Oil output fell 16% over the last 12 months. 6,689 bbl in the 12 months through Jul 2026, against 7,945 bbl in the 12 months before.Last 12 months: 6,689 bblbbl per monthmcf per month0025020k50040k75060k1,00080kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 16% over the last 12 monthsMonthly oil production and gas for MUNSON B, Aug 2023 to Jul 2026. Oil output fell 16% over the last 12 months. 6,689 bbl in the 12 months through Jul 2026, against 7,945 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0025020k50040k75060k1,00080kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 18398, 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.

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

Flaring peaked at 3.6% of the gas in Sep 2023.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
99% of the gas went to a processing plant in the last 12 monthsShare of MUNSON B gas by disposition code each month, Aug 2023 to Jul 2026. 99% of the gas went to a processing plant in the last 12 months. Flaring peaked at 3.6% of the gas in Sep 2023.Share of the lease’s gas by disposition code, per month0%50%100%Flared 3.6%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
99% of the gas went to a processing plant in the last 12 monthsShare of MUNSON B gas by disposition code each month, Aug 2023 to Jul 2026. 99% of the gas went to a processing plant in the last 12 months. Flaring peaked at 3.6% of the gas in Sep 2023.Share of gas by disposition code0%50%100%Flared 3.6%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 18398, 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, Jan 2020 to Jul 20262020202120222023202420252026Sem Operating Company LLCJan 2020 to nowthrough Jul 2026
Operators of this lease over timeSem Operating Company LLC, Jan 2020 to Jul 20262020202120222023202420252026Sem Operating Company LLCJan 2020 to nowthrough Jul 2026

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

Wells

8 wells on this lease

Every well the Railroad Commission links to oil lease 18398 in district 7C. The API number is the state’s ID for a well.
Wells on MUNSON B
API numberWell no.Status
42-235-355781801HActive
42-235-355791802HActive
42-235-358251704HActive
42-235-358261705HActive
42-235-359662001HActive
42-235-359671706HActive
42-235-360772002HActive
42-235-360782003HActive

SourceTexas Railroad Commission Wellbore Query, district 7C, lease 18398.

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 1, 2019

  • 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 Sep 1, 2024 · 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 Sep 1, 2024 · Energy Transfer Company gathers it: 33% of it, on the list since Sep 1, 2024

Companies that used to be listed: Cogent Midstream Westex, LLC (gathers it, until Sep 1, 2024); Dcp Operating Company, LP (gathers it, until Sep 1, 2024); Wtg South Permian Midstream LLC (gathers it, until Sep 1, 2024); Cogent Midstream Westex, LLC (buys it, until Sep 1, 2024); Dcp Operating Company, LP (buys it, until Sep 1, 2024); Wtg South Permian Midstream LLC (buys it, until Sep 1, 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

5,002.30 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
99 not plugged
Horizontal
9
First completion
Mar 10, 2011
Latest permit
Jul 23, 2015

The wells on this lease state different acreage

The permits state between 80.2 and 6,752 acres. Use the acres from your own division order for the well you are paid on.

9 wells are listed on this lease

Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

Wells and acres on the permits for Munson B
API numberWell no.Acreson the permit
42-235-360772002H5,002.30
42-235-360782003H5,002.30
42-235-359662001H80.20
42-235-359671706H5,002.30
42-235-358251704H5,002.30
42-235-358261705H5,002.30
42-235-355781801H5,002.30
42-235-355791802H5,002.30
42-235-346232701H6,752

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 MUNSON B 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 MUNSON B
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Sem Operating43535454,58354,1650$80.46$2.89
Jun 2026Sem Operating63486956,14755,7170$84.81$3.15
May 2026Sem Operating46053454,01753,5660$102.13$2.94
Apr 2026Sem Operating64535655,41154,9870$100.32$2.77
Mar 2026Sem Operating58386355,06654,6520$91.38$3.04
Feb 2026Sem Operating60653151,61651,2260$64.51$3.62
Jan 2026Sem Operating60435758,76958,3020$60.04$7.72
Dec 2025Sem Operating66488960,12159,6580$57.97$4.26
Nov 2025Sem Operating59852655,57755,0900$60.06$3.79
Oct 2025Sem Operating57770259,56259,0510$60.89$3.19
Sep 2025Sem Operating58017447,38746,8040$63.96$2.97
Aug 2025Sem Operating30351822,05421,8710$64.86$2.91
Jul 2025Sem Operating60652658,99358,9930$68.39$3.20
Jun 2025Sem Operating56369358,97458,9740$68.17$3.02
May 2025Sem Operating70352559,25659,2560$62.17$3.12
Apr 2025Sem Operating67453359,14459,1440$63.54$3.42
Mar 2025Sem Operating68988762,91362,9130$68.24$4.12
Feb 2025Sem Operating68171257,82057,8200$71.53$4.19
Jan 2025Sem Operating77570764,36464,3640$75.74$4.13
Dec 2024Sem Operating81087366,50266,5020$70.12$3.01
Nov 2024Sem Operating73270064,68764,6870$69.95$2.12
Oct 2024Sem Operating69957962,60562,6050$71.99$2.20
Sep 2024Sem Operating50452257,89657,8960$70.24$2.28
Aug 2024Sem Operating50969757,89657,8960$76.68$1.99
Jul 2024Sem Operating60369460,87360,8730$81.80$2.07
Jun 2024Sem Operating62670458,70258,7020$79.77$2.54
May 2024Sem Operating57935355,26755,2670$80.02$2.12
Apr 2024Sem Operating70487863,91263,9120$85.35$1.60
Mar 2024Sem Operating73588464,82064,8164$81.28$1.49
Feb 2024Sem Operating65253157,01056,95159$77.25$1.72
Jan 2024Sem Operating86688065,64465,518126$74.15$3.18
Dec 2023Sem Operating89187068,00468,0022$71.90$2.52
Nov 2023Sem Operating90071170,72770,70522$77.69$2.71
Oct 2023Sem Operating4182,33878,52477,525999$85.64$2.98
Sep 2023Sem Operating591053,24651,3481,898$89.43$2.64
Aug 2023Sem Operating510039,85939,299560$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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Upload your statements for MUNSON B. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Sem Operating Company LLC.

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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

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 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 18398, 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.