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Royalty Clerk

Texas oil lease · RRC district 7C · Lease 10043

No report in 6+ months

HALFMAN, E. A.

Halfman, E. A. is an oil lease in Tom Green County, Texas, operated by Lavanco Energy, Ltd. in the Halfman (Strawn) field. The Railroad Commission shows 245 bbl of oil in the 12 months through Apr 2023.

Oil lease dossier · 1 well

245bbl oil, last 12 months−24% vs prior year
Operator
Lavanco Energy, Ltd.
County
Tom Green County
Field
Halfman (Strawn)
RRC lease
7C-10043

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Where it sits

This county

Tom Green CountyTom GreenIrionRunnelsSterlingConchoCokeTom Green County
Tom Green County · RRC district 7COpen Tom Green County →
Oil in Apr 2023
0 bbl
Reporting to the state
since Jan 2020
Wells
1
Data through
Apr 2023

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 24% over the last 12 months

245 bbl in the 12 months through Apr 2023, against 322 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Last 12 months
Oil output fell 24% over the last 12 monthsMonthly oil production for HALFMAN, E. A., May 2020 to Apr 2023. Oil output fell 24% over the last 12 months. 245 bbl in the 12 months through Apr 2023, against 322 bbl in the 12 months before.Last 12 months: 245 bblbbl per month01020304050Jul 20OctJan 21AprJulOctJan 22AprJulOctJan 23Apr
Oil output fell 24% over the last 12 monthsMonthly oil production for HALFMAN, E. A., May 2020 to Apr 2023. Oil output fell 24% over the last 12 months. 245 bbl in the 12 months through Apr 2023, against 322 bbl in the 12 months before.Last 12 monthsbbl per month01020304050Jul 20Jan 21JulJan 22JulJan 23

SourceTexas Railroad Commission Production Data Query, oil lease 10043, 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.

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.

Lavanco Energy, Ltd. has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeLavanco Energy, Ltd., Jan 2020 to Apr 20232020202120222023Lavanco Energy, Ltd.Jan 2020 to nowthrough Apr 2023
Operators of this lease over timeLavanco Energy, Ltd., Jan 2020 to Apr 20232020202120222023Lavanco Energy, Ltd.Jan 2020 to nowthrough Apr 2023

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 10043 in district 7C. The API number is the state’s ID for a well.
Wells on HALFMAN, E. A.
API numberWell no.Status
42-451-311501Active

SourceTexas Railroad Commission Wellbore Query, district 7C, lease 10043.

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

    Sunoco Ptnrs. Mktg.&terminals LP gathers it.

    100% of it, on the list since Apr 1, 2002

  • Gas from oil wells

    Davis Gas Processing, Inc. buys and gathers it.

    Davis Gas Processing, Inc. buys it: 100% of it, on the list since Nov 1, 2017 · Davis Gas Processing, Inc. gathers it: 100% of it, on the list since Nov 1, 2017

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
10 not plugged
Horizontal
0
First completion
Mar 7, 1983
Latest permit
Jan 27, 1983
Wells and acres on the permits for Halfman, E. A.
API numberWell no.Acreson the permit
42-451-31150180

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 HALFMAN, E. 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.

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 HALFMAN, E. A.
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Apr 2023Lavanco Energy,048$79.45$2.16
Mar 2023Lavanco Energy,220$73.28$2.31
Feb 2023Lavanco Energy,2135$76.83$2.38
Jan 2023Lavanco Energy,2134$78.12$3.27
Dec 2022Lavanco Energy,210$76.44$5.53
Nov 2022Lavanco Energy,2235$84.37$5.45
Oct 2022Lavanco Energy,220$87.55$5.66
Sep 2022Lavanco Energy,2236$84.26$7.88
Aug 2022Lavanco Energy,2136$93.67$8.81
Jul 2022Lavanco Energy,230$101.62$7.28
Jun 2022Lavanco Energy,2236$114.84$7.70
May 2022Lavanco Energy,2835$109.55$8.14
Apr 2022Lavanco Energy,260$101.78$6.60
Mar 2022Lavanco Energy,2838$108.50$4.90
Feb 2022Lavanco Energy,2535$91.64$4.69
Jan 2022Lavanco Energy,2837$83.22$4.38
Dec 2021Lavanco Energy,290$71.71$3.76
Nov 2021Lavanco Energy,2337$79.15$5.05
Oct 2021Lavanco Energy,2836$81.48$5.51
Sep 2021Lavanco Energy,2535$71.65$5.16
Aug 2021Lavanco Energy,290$67.73$4.07
Jul 2021Lavanco Energy,1334$72.49$3.84
Jun 2021Lavanco Energy,4334$71.38$3.26
May 2021Lavanco Energy,2535$65.17$2.91
Apr 2021Lavanco Energy,3334$61.72$2.66
Mar 2021Lavanco Energy,3236$62.33$2.62
Feb 2021Lavanco Energy,290$59.04$5.35
Jan 2021Lavanco Energy,3337$52.00$2.71
Dec 2020Lavanco Energy,3251$47.02$2.58
Nov 2020Lavanco Energy,3535$40.94$2.61
Oct 2020Lavanco Energy,4036$39.40$2.39
Sep 2020Lavanco Energy,2935$39.63$1.92
Aug 2020Lavanco Energy,3410$42.34$2.30
Jul 2020Lavanco Energy,3472$40.71$1.76
Jun 2020Lavanco Energy,4473$38.31$1.63
May 2020Lavanco Energy,40$28.56$1.75

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

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Upload your statements for HALFMAN, E. A.. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Lavanco Energy, Ltd.

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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

OperatorLavanco Energy, Ltd.FieldHalfman (Strawn)CountyTom Green County

Lavanco Energy, Ltd. in Tom Green County

No other producing leases from this operator in this county are in our data yet.

Halfman (Strawn) field

All leases in this field →

Leases within 10 km

Found by the location of their wells.

New drilling permits in Tom Green 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 Apr 2023?

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 10043, 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.