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Royalty Clerk

Texas oil lease · RRC district 7B · Lease 31381

Producing

GRAY LINE GRAY SAND

Gray Line Gray Sand is an oil lease in Taylor County, Texas, operated by Quail Well Service, Inc. in the Robertson-Griffin (Gray Sand) field. The Railroad Commission shows 7,159 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 8 wells

7,159bbl oil, last 12 months+40% vs prior year
Operator
Quail Well Service, Inc.
County
Taylor County
Field
Robertson-Griffin (Gray Sand)
RRC lease
7B-31381

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Where it sits

This county

Taylor CountyTaylorShackelfordFisherNolanCallahanJonesCokeTaylor County
Taylor County · RRC district 7BOpen Taylor County →
Oil in Jul 2026
542 bbl
Reporting to the state
since Jan 2020
Wells
8
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 40% over the last 12 months

7,159 bbl in the 12 months through Jul 2026, against 5,129 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Last 12 months
Oil output rose 40% over the last 12 monthsMonthly oil production for GRAY LINE GRAY SAND, Aug 2023 to Jul 2026. Oil output rose 40% over the last 12 months. 7,159 bbl in the 12 months through Jul 2026, against 5,129 bbl in the 12 months before.Last 12 months: 7,159 bblbbl per month0200400600800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 40% over the last 12 monthsMonthly oil production for GRAY LINE GRAY SAND, Aug 2023 to Jul 2026. Oil output rose 40% over the last 12 months. 7,159 bbl in the 12 months through Jul 2026, against 5,129 bbl in the 12 months before.Last 12 monthsbbl per month0200400600800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 31381, district 7B. 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.

Quail Well Service, Inc. has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeQuail Well Service, Inc., Jan 2020 to Jul 20262020202120222023202420252026Quail Well Service, Inc.Jan 2020 to nowthrough Jul 2026
Operators of this lease over timeQuail Well Service, Inc., Jan 2020 to Jul 20262020202120222023202420252026Quail Well Service, Inc.Jan 2020 to nowthrough Jul 2026

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

Wells

8 wells on this lease

Every well the Railroad Commission links to oil lease 31381 in district 7B. The API number is the state’s ID for a well.
Wells on GRAY LINE GRAY SAND
API numberWell no.Status
42-441-018104Active
42-441-051941WShut-in
42-441-052265Active
42-441-344421Active
42-441-344703Active
42-441-346927Active
42-441-3472710Active
42-441-805688Active

SourceTexas Railroad Commission Wellbore Query, district 7B, lease 31381.

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

    Bml, Inc. B gathers it.

    100% of it, on the list since Dec 27, 2013

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

1,035.25 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
87 not plugged
Horizontal
0
First completion
Dec 27, 2013
Latest permit
Aug 15, 2025

8 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 Gray Line Gray Sand
API numberWell no.Acreson the permit
42-441-34727101,035.25
42-441-8056881,035.25
42-441-3469271,035.25
42-441-0522651,035.25
42-441-051941W1,035.25
42-441-0181041,035.25
42-441-344703999.97
42-441-344421999.97

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 GRAY LINE GRAY SAND 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 GRAY LINE GRAY SAND
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jul 2026Quail Well542667$80.46$2.89
Jun 2026Quail Well685681$84.81$3.15
May 2026Quail Well723686$102.13$2.94
Apr 2026Quail Well614675$100.32$2.77
Mar 2026Quail Well733675$91.38$3.04
Feb 2026Quail Well696856$64.51$3.62
Jan 2026Quail Well570345$60.04$7.72
Dec 2025Quail Well523506$57.97$4.26
Nov 2025Quail Well437515$60.06$3.79
Oct 2025Quail Well544521$60.89$3.19
Sep 2025Quail Well528523$63.96$2.97
Aug 2025Quail Well564525$64.86$2.91
Jul 2025Quail Well562551$68.39$3.20
Jun 2025Quail Well578708$68.17$3.02
May 2025Quail Well645503$62.17$3.12
Apr 2025Quail Well492508$63.54$3.42
Mar 2025Quail Well446511$68.24$4.12
Feb 2025Quail Well420364$71.53$4.19
Jan 2025Quail Well356345$75.74$4.13
Dec 2024Quail Well394512$70.12$3.01
Nov 2024Quail Well344357$69.95$2.12
Oct 2024Quail Well375350$71.99$2.20
Sep 2024Quail Well260172$70.24$2.28
Aug 2024Quail Well257358$76.68$1.99
Jul 2024Quail Well240162$81.80$2.07
Jun 2024Quail Well338358$79.77$2.54
May 2024Quail Well346345$80.02$2.12
Apr 2024Quail Well275170$85.35$1.60
Mar 2024Quail Well89165$81.28$1.49
Feb 2024Quail Well125175$77.25$1.72
Jan 2024Quail Well1160$74.15$3.18
Dec 2023Quail Well142165$71.90$2.52
Nov 2023Quail Well107174$77.69$2.71
Oct 2023Quail Well113176$85.64$2.98
Sep 2023Quail Well1200$89.43$2.64
Aug 2023Quail Well87170$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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Around this lease

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This lease belongs to

OperatorQuail Well Service, Inc.FieldRobertson-Griffin (Gray Sand)CountyTaylor County

Quail Well Service, Inc. in Taylor County

All Quail Well Service, Inc. leases →

Robertson-Griffin (Gray 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 31381, district 7B, 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.