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Texas oil lease · RRC district 03 · Lease 28028

Producing

SAMPSON-MUELLER B

Sampson-Mueller B is an oil lease in Fayette County, Texas, operated by Magnolia Oil & Gas Operating LLC in the Giddings (Austin Chalk-3) field. The Railroad Commission shows 17,574 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 1 well

17,574bbl oil, last 12 months−21% vs prior year
Operator
Magnolia Oil & Gas Operating LLC
County
Fayette County
Field
Giddings (Austin Chalk-3)
RRC lease
03-28028

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Where it sits

This county

Fayette CountyFayetteCaldwellBastropWashingtonBurlesonLeeAustinColoradoFayette County
Fayette County · RRC district 03Open Fayette County →
Gas, last 12 months
80,169 mcf
Oil in Jul 2026
1,544 bbl
Reporting to the state
since Sep 2022
Wells
1

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 21% over the last 12 months

17,574 bbl in the 12 months through Jul 2026, against 22,360 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output fell 21% over the last 12 monthsMonthly oil production and gas for SAMPSON-MUELLER B, Aug 2023 to Jul 2026. Oil output fell 21% over the last 12 months. 17,574 bbl in the 12 months through Jul 2026, against 22,360 bbl in the 12 months before.Last 12 months: 17,574 bblbbl per monthmcf per month002,00010k4,00020k6,00030k8,00040kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 21% over the last 12 monthsMonthly oil production and gas for SAMPSON-MUELLER B, Aug 2023 to Jul 2026. Oil output fell 21% over the last 12 months. 17,574 bbl in the 12 months through Jul 2026, against 22,360 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,00010k4,00020k6,00030k8,00040kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 28028, district 03. 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.

89% of the gas went to a transmission line in the last 12 months

Each bar is one month. Colors are the disposition codes the operator reported.

  • Transmission line (2)
  • Lease fuel (1)
89% of the gas went to a transmission line in the last 12 monthsShare of SAMPSON-MUELLER B gas by disposition code each month, Aug 2023 to Jul 2026. 89% of the gas went to a transmission line in the last 12 months. Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
89% of the gas went to a transmission line in the last 12 monthsShare of SAMPSON-MUELLER B gas by disposition code each month, Aug 2023 to Jul 2026. 89% of the gas went to a transmission line in the last 12 months. Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 28028, district 03. Reported through Jul 2026.

Transmission line (2)

Sold straight into a pipeline without processing. Processing fees on your statement would be worth asking about.

Lease fuel (1)

Burned to run equipment on the lease. Not sold, so it pays no royalty. A few percent is normal.

None of the gas was flared in the last 12 months.

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.

The operator changed once, most recently in Aug 2025

If your statements skip or shrink around a change, ask the new operator's owner relations department whether the month is in suspense.

Operators of this lease over timeDallas Petroleum Group, LLC, Sep 2022 to Jul 2025; Magnolia Oil & Gas Operating LLC, Aug 2025 to Jul 20262023202420252026Changed Aug 2025Dallas Petroleum Group, LLCSep 2022 to Jul 2025Magnolia Oil & Gas Operating…Aug 2025 to now
Operators of this lease over timeDallas Petroleum Group, LLC, Sep 2022 to Jul 2025; Magnolia Oil & Gas Operating LLC, Aug 2025 to Jul 20262023202420252026Changed Aug 2025Dallas Petroleum Group, LLCSep 2022 to Jul 2025Magnolia Oil & Gas Operating LLCAug 2025 to now

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 28028 in district 03. The API number is the state’s ID for a well.
Wells on SAMPSON-MUELLER B
API numberWell no.Status
42-149-335495HActive

SourceTexas Railroad Commission Wellbore Query, district 03, lease 28028.

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

    Enterprise Crude Oil LLC and Texican Crude&hydrocarbons, LLC gather it.

    Enterprise Crude Oil LLC gathers it: 50% of it, on the list since Sep 10, 2022 · Texican Crude&hydrocarbons, LLC gathers it: 50% of it, on the list since Sep 10, 2022

  • Gas from oil wells

    Energy Transfer Company buys and gathers it.

    Energy Transfer Company buys it: 100% of it, on the list since Sep 10, 2022 · Energy Transfer Company gathers it: 100% of it, on the list since Sep 10, 2022

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

767.91 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
Sep 10, 2022
Latest permit
Jul 7, 2022

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 Sampson-Mueller B
API numberWell no.Acreson the permit
42-149-335495H767.91

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

What the operator reported

What Magnolia Oil & Gas Corporation told investors it received

Magnolia Oil & Gas Operating LLC is linked to Magnolia Oil & Gas Corporation (MGY). Public companies report the average price they realize each quarter. It is an average across everything the company operates, not the price on this lease.
Realized prices reported by Magnolia Oil & Gas Corporation
QuarterOil$ per bblFiling
Q2 2026$98.13SEC filing
Q1 2026$70.29SEC filing
Q3 2025$63.55SEC filing
Q2 2025$62.20SEC filing
Q1 2025$69.81SEC filing
Q3 2024$74.23SEC filing

SourceMagnolia Oil & Gas Corporation quarterly reports on SEC EDGAR, prices before hedging where the company states both. Read by machine from each filing’s tables; the link opens the filing so you can check the figure.

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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 SAMPSON-MUELLER 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.

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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 SAMPSON-MUELLER B
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Magnolia Oil1,5441,6136,4215,6540$80.46$2.89
Jun 2026Magnolia Oil1,4811,5585,3574,6070$84.81$3.15
May 2026Magnolia Oil1,8221,9277,2576,4820$102.13$2.94
Apr 2026Magnolia Oil1,4451,5586,6825,9320$100.32$2.77
Mar 2026Magnolia Oil1,2621,0385,7484,9790$91.38$3.04
Feb 2026Magnolia Oil1,7611,6838,0547,3580$64.51$3.62
Jan 2026Magnolia Oil1,5531,7495,0194,2440$60.04$7.72
Dec 2025Magnolia Oil1,6121,1998,1967,4210$57.97$4.26
Nov 2025Magnolia Oil6968631,7279770$60.06$3.79
Oct 2025Magnolia Oil1,5221,59610,6259,8500$60.89$3.19
Sep 2025Magnolia Oil1,7041,76610,82210,0720$63.96$2.97
Aug 2025Magnolia Oil1,1722,6314,2613,4960$64.86$2.91
Jul 2025Dallas Petroleum1,3441,2495,9085,9080$68.39$3.20
Jun 2025Dallas Petroleum1,4711,4887,5897,1240$68.17$3.02
May 2025Dallas Petroleum2,0841,99210,47610,0110$62.17$3.12
Apr 2025Dallas Petroleum1,6921,6159,2629,2620$63.54$3.42
Mar 2025Dallas Petroleum1,6311,6308,1357,3910$68.24$4.12
Feb 2025Dallas Petroleum1,6921,6437,0646,3200$71.53$4.19
Jan 2025Dallas Petroleum2,1261,9759,3329,3320$75.74$4.13
Dec 2024Dallas Petroleum1,5151,4878,4838,4830$70.12$3.01
Nov 2024Dallas Petroleum1,8691,8328,7397,9950$69.95$2.12
Oct 2024Dallas Petroleum2,1532,0878,6167,8720$71.99$2.20
Sep 2024Dallas Petroleum2,3112,22410,91510,1710$70.24$2.28
Aug 2024Dallas Petroleum2,4722,16713,21812,4740$76.68$1.99
Jul 2024Dallas Petroleum2,5713,05713,39212,6480$81.80$2.07
Jun 2024Dallas Petroleum2,6352,73313,75313,7530$79.77$2.54
May 2024Dallas Petroleum2,9362,50515,49415,4940$80.02$2.12
Apr 2024Dallas Petroleum3,2093,39116,12616,1260$85.35$1.60
Mar 2024Dallas Petroleum4,1463,90820,13920,1390$81.28$1.49
Feb 2024Dallas Petroleum4941792,9062,9060$77.25$1.72
Jan 2024Dallas Petroleum3,0913,06615,02915,0290$74.15$3.18
Dec 2023Dallas Petroleum3,4053,71015,81315,8130$71.90$2.52
Nov 2023Dallas Petroleum3,7863,75419,21219,2120$77.69$2.71
Oct 2023Dallas Petroleum3,7693,66218,37418,3740$85.64$2.98
Sep 2023Dallas Petroleum4,6004,60223,60323,6030$89.43$2.64
Aug 2023Dallas Petroleum5,0924,86525,53325,5330$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 SAMPSON-MUELLER B. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Magnolia Oil & Gas Operating 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

OperatorMagnolia Oil & Gas Operating LLCFieldGiddings (Austin Chalk-3)CountyFayette County

Magnolia Oil & Gas Operating LLC in Fayette County

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Giddings (Austin Chalk-3) field

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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 28028, district 03, 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.

FAQ

Questions about SAMPSON-MUELLER B

Who operates the SAMPSON-MUELLER B lease?

The Railroad Commission lists Magnolia Oil & Gas Operating LLC (operator number 521544) as the operator of this lease in Fayette County, Texas. The operator history on this page shows earlier operators and when the record changed.

How much has the SAMPSON-MUELLER B lease produced?

The lease reported 17,574 bbl of oil and 80,169 mcf of gas in the last 12 months through Jul 2026. Monthly figures for 36 months are in the ledger on this page, taken from the Railroad Commission's production data.

Does this page show who owns the royalty?

No. Railroad Commission records show who operates a lease and what it reported, not who owns the minerals or receives royalty. Your division order and royalty stub name the lease and your decimal interest.

How do I check my royalty stub against this lease?

Multiply the lease's volume for a month by your decimal interest and compare it with the barrels and mcf on your stub for the same month. The two are seldom identical, since sales and reporting months can differ, but a large gap is worth a question to the operator.

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