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Royalty Clerk

Texas oil lease · RRC district 01 · Lease 10743

Producing

KNAPPICK

Knappick is an oil lease in Atascosa County, Texas, operated by Calk Oil Company in the Somerset field. The Railroad Commission shows 16 bbl of oil in the 12 months through Jun 2026.

Oil lease dossier · 1 well

16bbl oil, last 12 months+25% vs prior year
Operator
Calk Oil Company
County
Atascosa County
Field
Somerset
RRC lease
01-10743

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County · RRC district 01Open Atascosa County →
Oil in Jun 2026
1 bbl
Reporting to the state
since Jan 2020
Wells
1
Data through
Jun 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 25% over the last 12 months

15 bbl in the 12 months through Jul 2026, against 12 bbl in the 12 months before. Jul 2026 was not reported. A red cross marks each one.

  • Oil (bars, left axis)
  • Last 12 months
Oil output rose 25% over the last 12 monthsMonthly oil production for KNAPPICK, Aug 2023 to Jul 2026. Oil output rose 25% over the last 12 months. 15 bbl in the 12 months through Jul 2026, against 12 bbl in the 12 months before.Last 12 months: 15 bblbbl per month01122Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 25% over the last 12 monthsMonthly oil production for KNAPPICK, Aug 2023 to Jul 2026. Oil output rose 25% over the last 12 months. 15 bbl in the 12 months through Jul 2026, against 12 bbl in the 12 months before.Last 12 monthsbbl per month01122Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 10743, 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.

Calk Oil Company has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeCalk Oil Company, Jan 2020 to Jun 20262020202120222023202420252026Calk Oil CompanyJan 2020 to nowthrough Jul 2026
Operators of this lease over timeCalk Oil Company, Jan 2020 to Jun 20262020202120222023202420252026Calk Oil CompanyJan 2020 to nowthrough Jul 2026

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 10743 in district 01. The API number is the state’s ID for a well.
Wells on KNAPPICK
API numberWell no.Status
42-013-318981Active

SourceTexas Railroad Commission Wellbore Query, district 01, lease 10743.

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. and Plains Marketing, L.p. gather it.

    Gulfmark Energy, Inc. gathers it: 50% of it, on the list since Jan 1, 2018 · Plains Marketing, L.p. gathers it: 50% of it, on the list since Sep 1, 2024

Companies that used to be listed: Shell Trading (Us) Company (gathers 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

82 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
Jun 23, 1983
Latest permit
Apr 8, 1983
Wells and acres on the permits for Knappick
API numberWell no.Acreson the permit
42-013-31898182

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 KNAPPICK sold each month.

For example 0.00097656, or a fraction like 1/1024.

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 KNAPPICK
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jul 2026No report––$80.46$2.89
Jun 2026Calk Oil10$84.81$3.15
May 2026Calk Oil10$102.13$2.94
Apr 2026Calk Oil10$100.32$2.77
Mar 2026Calk Oil10$91.38$3.04
Feb 2026Calk Oil10$64.51$3.62
Jan 2026Calk Oil20$60.04$7.72
Dec 2025Calk Oil10$57.97$4.26
Nov 2025Calk Oil20$60.06$3.79
Oct 2025Calk Oil20$60.89$3.19
Sep 2025Calk Oil10$63.96$2.97
Aug 2025Calk Oil20$64.86$2.91
Jul 2025Calk Oil10$68.39$3.20
Jun 2025Calk Oil10$68.17$3.02
May 2025Calk Oil10$62.17$3.12
Apr 2025Calk Oil10$63.54$3.42
Mar 2025Calk Oil10$68.24$4.12
Feb 2025Calk Oil10$71.53$4.19
Jan 2025Calk Oil10$75.74$4.13
Dec 2024Calk Oil10$70.12$3.01
Nov 2024Calk Oil10$69.95$2.12
Oct 2024Calk Oil10$71.99$2.20
Sep 2024Calk Oil10$70.24$2.28
Aug 2024Calk Oil10$76.68$1.99
Jul 2024Calk Oil20$81.80$2.07
Jun 2024Calk Oil20$79.77$2.54
May 2024Calk Oil20$80.02$2.12
Apr 2024Calk Oil20$85.35$1.60
Mar 2024Calk Oil20$81.28$1.49
Feb 2024Calk Oil10$77.25$1.72
Jan 2024Calk Oil10$74.15$3.18
Dec 2023Calk Oil10$71.90$2.52
Nov 2023Calk Oil10$77.69$2.71
Oct 2023Calk Oil20$85.64$2.98
Sep 2023Calk Oil20$89.43$2.64
Aug 2023Calk Oil10$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 KNAPPICK. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Calk Oil Company.

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  • A month that was never paid
  • Your share of the barrels and mcf
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  • Fees taken on gas
  • Late payment interest

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

OperatorCalk Oil CompanyFieldSomersetCountyAtascosa County

Calk Oil Company in Atascosa County

All Calk Oil Company leases →

Somerset field

All leases in this field →

Leases within 10 km

Found by the location of their wells.

New drilling permits in Atascosa 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 Jun 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 10743, 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.