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Royalty Clerk

Texas oil lease · RRC district 01 · Lease 04530

Producing

MAUERMANN

Mauermann is an oil lease in Bexar County, Texas, operated by South Sam Operating Company, LLC in the Monksfield (350 Sand) field. The Railroad Commission shows 168 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 141 wells

168bbl oil, last 12 months+45% vs prior year
Operator
South Sam Operating Company, LLC
County
Bexar County
Field
Monksfield (350 Sand)
RRC lease
01-04530

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Where it sits

This county

Bexar CountyBexarWilsonComalMedinaKendallHaysGuadalupeBanderaBexar County
Bexar County · RRC district 01Open Bexar County →
Oil in Jul 2026
14 bbl
Reporting to the state
since Jan 2020
Wells
141
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 45% over the last 12 months

168 bbl in the 12 months through Jul 2026, against 116 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Last 12 months
Oil output rose 45% over the last 12 monthsMonthly oil production for MAUERMANN, Aug 2023 to Jul 2026. Oil output rose 45% over the last 12 months. 168 bbl in the 12 months through Jul 2026, against 116 bbl in the 12 months before.Last 12 months: 168 bblbbl per month05101520Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 45% over the last 12 monthsMonthly oil production for MAUERMANN, Aug 2023 to Jul 2026. Oil output rose 45% over the last 12 months. 168 bbl in the 12 months through Jul 2026, against 116 bbl in the 12 months before.Last 12 monthsbbl per month05101520Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 04530, district 01. 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.

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.

South Sam 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 timeSouth Sam Operating Company, LLC, Jan 2020 to Jul 20262020202120222023202420252026South Sam Operating Company,…Jan 2020 to nowthrough Jul 2026
Operators of this lease over timeSouth Sam Operating Company, LLC, Jan 2020 to Jul 20262020202120222023202420252026South Sam Operating Company, LLCJan 2020 to nowthrough Jul 2026

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

Wells

141 wells on this lease

Every well the Railroad Commission links to oil lease 04530 in district 01. The API number is the state’s ID for a well.
Wells on MAUERMANN
API numberWell no.Status
42-029-014021XActive
42-029-301872XActive
42-029-30824104Active
42-029-30825103Active
42-029-30826102Active
42-029-30827101Active
42-029-30920105Active
42-029-31213206Active
42-029-31214308Active
42-029-31215203Active
42-029-31216309Active
42-029-31217307Active
42-029-31218306Active
42-029-31219305Active
42-029-31220304Active
42-029-31221303Active
42-029-31222208Active
42-029-31223207Active
42-029-31224205Active
42-029-31225204Active
42-029-31266209Active
42-029-31397501Active
42-029-31398502Active
42-029-31399503Active
42-029-31400504Active
42-029-31401507Active
42-029-31402602Active
42-029-31403603Active
42-029-31404604Active
42-029-31405310Active
42-029-31407505Active
42-029-31408506Active
42-029-31409403Active
42-029-31410402Active
42-029-31411312Active
42-029-31412407Active
42-029-31413406Active
42-029-31414405Active
42-029-31415404Active
42-029-31416311Active
42-029-31417408Active
42-029-31418409Active
42-029-31419410Active
42-029-31420411Active
42-029-31448112Active
42-029-31449108Active
42-029-31450109Active
42-029-31451210Active
42-029-31452211Active
42-029-31453111Active
42-029-31454212Active
42-029-31455110Active
42-029-35454303XActive
42-029-35455303YActive
42-029-35456306XActive
42-029-35457306YActive
42-029-35458307XActive
42-029-35459307YActive
42-029-35460308XActive
42-029-35461308YActive
42-029-35462309XActive
42-029-35463309YActive
42-029-35464310XActive
42-029-35465310YActive
42-029-35466311YActive
42-029-35467305YActive
42-029-35468305XActive
42-029-35469304XActive
42-029-35470304YActive
42-029-35471312YActive
42-029-35472312XActive
42-029-35490L 40Active
42-029-35491M 40Active
42-029-35492704XActive
42-029-35493F 40Active
42-029-35494G 40Active
42-029-35495H 40Active
42-029-35496I 40Active
42-029-35497J 40Active
42-029-35498K 40Active
42-029-35499D 40Active
42-029-35500E 40Active
42-029-35501C 40Active
42-029-35502B 40Active
42-029-35519311XActive
42-029-35535L 24Active
42-029-35536M 29Active
42-029-35537703XShut-in
42-029-35538703YActive
42-029-35597M 30Active
42-029-35598L 28Active
42-029-35599L 27Active
42-029-35600L 25Active
42-029-35601L 22Active
42-029-35602302XActive
42-029-35603302YActive
42-029-35604106Active
42-029-35605M 31Active
42-029-35606M 32Active
42-029-35607702XActive
42-029-35609702YActive
42-029-35610107Active
42-029-36740C 33Active
42-029-36741C 37Active
42-029-36742C 35Active
42-029-36743111YActive
42-029-367442XZActive
42-029-36745109YActive
42-029-36746C 19Active
42-029-36747C 21Active
42-029-36748C 23Active
42-029-36749C 25Active
42-029-36750C 29Active
42-029-36752C 27Active
42-029-36773C 31Active
42-029-36774C 17Active
42-029-36775B 30Active
42-029-36776B 28Active
42-029-36777C 15Active
42-029-36778C 14Active
42-029-36779104YActive
42-029-36780C 12Active
42-029-36781103YActive
42-029-36783B 26Active
42-029-36784B 24Active
42-029-36785B 16Active
42-029-36786B 18Active
42-029-36787B 20Active
42-029-36788B 22Active
42-029-36789B 32Active
42-029-36790B 34Active
42-029-36791B 38Active
42-029-36792105YActive
42-029-36793B 36Active
42-029-807051Active
42-029-807061AActive
42-029-807072Active
42-029-807083Active
42-029-807094Active
42-029-807105Active
42-029-807116Active

SourceTexas Railroad Commission Wellbore Query, district 01, lease 04530.

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

    Gulfmark Energy, Inc. gathers it.

    100% of it, on the list since Jan 25, 2019

Companies that used to be listed: Ace Gathering, Inc. (gathers it, until Jan 25, 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

128 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
142128 not plugged
Horizontal
0
First completion
Jan 1, 1975
Latest permit
Oct 16, 1985

A pooling certificate was filed

Your tract may share its production with neighbours in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one permit.

The wells on this lease state different acreage

The permits state between 75 and 128 acres. Use the acres from your own division order for the well you are paid on.

142 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 Mauermann
API numberWell no.Acreson the permit
42-029-36785B 16128
42-029-36752C 27128
42-029-36740C 33128
42-029-36741C 37128
42-029-36742C 35128
42-029-36743111Y128
42-029-367442XZ128
42-029-36745109Y128
42-029-36746C 19128
42-029-36747C 21128
42-029-36748C 23128
42-029-36749C 25128

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 MAUERMANN 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.

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 MAUERMANN
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jul 2026South Sam140$80.46$2.89
Jun 2026South Sam2022$84.81$3.15
May 2026South Sam190$102.13$2.94
Apr 2026South Sam150$100.32$2.77
Mar 2026South Sam1819$91.38$3.04
Feb 2026South Sam40$64.51$3.62
Jan 2026South Sam1033$60.04$7.72
Dec 2025South Sam150$57.97$4.26
Nov 2025South Sam90$60.06$3.79
Oct 2025South Sam1415$60.89$3.19
Sep 2025South Sam1838$63.96$2.97
Aug 2025South Sam1223$64.86$2.91
Jul 2025South Sam00$68.39$3.20
Jun 2025South Sam00$68.17$3.02
May 2025South Sam120$62.17$3.12
Apr 2025South Sam90$63.54$3.42
Mar 2025South Sam58$68.24$4.12
Feb 2025South Sam88$71.53$4.19
Jan 2025South Sam140$75.74$4.13
Dec 2024South Sam1212$70.12$3.01
Nov 2024South Sam1212$69.95$2.12
Oct 2024South Sam1213$71.99$2.20
Sep 2024South Sam1415$70.24$2.28
Aug 2024South Sam1817$76.68$1.99
Jul 2024South Sam910$81.80$2.07
Jun 2024South Sam926$79.77$2.54
May 2024South Sam120$80.02$2.12
Apr 2024South Sam1822$85.35$1.60
Mar 2024South Sam120$81.28$1.49
Feb 2024South Sam1522$77.25$1.72
Jan 2024South Sam1447$74.15$3.18
Dec 2023South Sam180$71.90$2.52
Nov 2023South Sam1223$77.69$2.71
Oct 2023South Sam1634$85.64$2.98
Sep 2023South Sam150$89.43$2.64
Aug 2023South Sam1317$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).

Check your statements

Do your checks match this lease?

Upload your statements for MAUERMANN. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask South Sam Operating Company, LLC.

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  • Fees taken on gas
  • Late payment interest

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

OperatorSouth Sam Operating Company, LLCFieldMonksfield (350 Sand)CountyBexar County

South Sam Operating Company, LLC in Bexar County

All South Sam Operating Company, LLC leases →

Monksfield (350 Sand) 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 04530, 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.