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Royalty Clerk

Texas oil lease · RRC district 01 · Lease 18344

Producing

ANDERSON UNIT

Anderson Unit is an oil lease in Guadalupe County, Texas, operated by Texas Petroleum Investment Co. in the Darst Creek (Edwards) field. The Railroad Commission shows 1,336 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier

1,336bbl oil, last 12 months+45% vs prior year
Operator
Texas Petroleum Investment Co.
County
Guadalupe County
Field
Darst Creek (Edwards)
RRC lease
01-18344

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Where it sits

This county

Guadalupe CountyGuadalupeWilsonComalGonzalesCaldwellBastropHaysBexarGuadalupe County
Guadalupe County · RRC district 01Open Guadalupe County →
Oil in Jul 2026
109 bbl
Reporting to the state
since Jan 2020

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

1,336 bbl in the 12 months through Jul 2026, against 922 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 ANDERSON UNIT, Aug 2023 to Jul 2026. Oil output rose 45% over the last 12 months. 1,336 bbl in the 12 months through Jul 2026, against 922 bbl in the 12 months before.Last 12 months: 1,336 bblbbl per month0100200300400Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 45% over the last 12 monthsMonthly oil production for ANDERSON UNIT, Aug 2023 to Jul 2026. Oil output rose 45% over the last 12 months. 1,336 bbl in the 12 months through Jul 2026, against 922 bbl in the 12 months before.Last 12 monthsbbl per month0100200300400Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 18344, 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.

Texas Petroleum Investment Co. has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeTexas Petroleum Investment Co., Jan 2020 to Jul 20262020202120222023202420252026Texas Petroleum Investment Co.Jan 2020 to nowthrough Jul 2026
Operators of this lease over timeTexas Petroleum Investment Co., Jan 2020 to Jul 20262020202120222023202420252026Texas Petroleum Investment Co.Jan 2020 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 18344 in district 01. 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

    Harvest Marketing & Trading, LLC gathers it.

    100% of it, on the list since Jul 24, 2023

Companies that used to be listed: Enterprise Crude Oil LLC (gathers it, until Jul 24, 2023); Shell Trading (Us) Company (gathers it, until Oct 1, 2020); Enterprise Crude Oil LLC (gathers it, until May 1, 2020).

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

80 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
1
First completion
Nov 5, 2013
Latest permit
Sep 30, 2013

An allocation well is on this lease

A well drilled across several tracts shares its production by an allocation formula, so the decimal is not always your acres over the unit acres. Ask the operator for the allocation formula and the tract factor for your land.

Wells and acres on the permits for Anderson Unit
API numberWell no.Acreson the permit
42-187-335662ST80

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 ANDERSON UNIT 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 ANDERSON UNIT
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jul 2026Texas Petroleum109107$80.46$2.89
Jun 2026Texas Petroleum108115$84.81$3.15
May 2026Texas Petroleum118114$102.13$2.94
Apr 2026Texas Petroleum120121$100.32$2.77
Mar 2026Texas Petroleum122118$91.38$3.04
Feb 2026Texas Petroleum117119$64.51$3.62
Jan 2026Texas Petroleum122120$60.04$7.72
Dec 2025Texas Petroleum118117$57.97$4.26
Nov 2025Texas Petroleum102102$60.06$3.79
Oct 2025Texas Petroleum107110$60.89$3.19
Sep 2025Texas Petroleum10399$63.96$2.97
Aug 2025Texas Petroleum90100$64.86$2.91
Jul 2025Texas Petroleum00$68.39$3.20
Jun 2025Texas Petroleum00$68.17$3.02
May 2025Texas Petroleum109107$62.17$3.12
Apr 2025Texas Petroleum102101$63.54$3.42
Mar 2025Texas Petroleum109108$68.24$4.12
Feb 2025Texas Petroleum8483$71.53$4.19
Jan 2025Texas Petroleum8180$75.74$4.13
Dec 2024Texas Petroleum8486$70.12$3.01
Nov 2024Texas Petroleum7574$69.95$2.12
Oct 2024Texas Petroleum8081$71.99$2.20
Sep 2024Texas Petroleum9699$70.24$2.28
Aug 2024Texas Petroleum102102$76.68$1.99
Jul 2024Texas Petroleum9992$81.80$2.07
Jun 2024Texas Petroleum8792$79.77$2.54
May 2024Texas Petroleum9899$80.02$2.12
Apr 2024Texas Petroleum10099$85.35$1.60
Mar 2024Texas Petroleum140134$81.28$1.49
Feb 2024Texas Petroleum166178$77.25$1.72
Jan 2024Texas Petroleum210211$74.15$3.18
Dec 2023Texas Petroleum204208$71.90$2.52
Nov 2023Texas Petroleum235245$77.69$2.71
Oct 2023Texas Petroleum250255$85.64$2.98
Sep 2023Texas Petroleum237236$89.43$2.64
Aug 2023Texas Petroleum261246$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 ANDERSON UNIT. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Texas Petroleum Investment Co.

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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

OperatorTexas Petroleum Investment Co.FieldDarst Creek (Edwards)CountyGuadalupe County

Texas Petroleum Investment Co. in Guadalupe County

All Texas Petroleum Investment Co. leases →

Darst Creek (Edwards) field

All leases in this field →

New drilling permits in Guadalupe 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 18344, 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.