Skip to content
Royalty Clerk

Texas oil lease · RRC district 8A · Lease 66166

Producing

FLANAGAN UNIT

Flanagan Unit is an oil lease in Gaines County, Texas, operated by Hilcorp Energy Company in the Flanagan (Clearfork, Cons.) field. The Railroad Commission shows 71,745 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 203 wells

71,745bbl oil, last 12 months+6% vs prior year
Operator
Hilcorp Energy Company
County
Gaines County
Field
Flanagan (Clearfork, Cons.)
RRC lease
8A-66166

Own a share of this lease?

Is your check right?

Upload a check stub or a phone photo. We compare every month with the state numbers on this page.

Check my statement

Free. No account needed. Two to four pages.

Where it sits

This county

Gaines CountyGainesYoakumDawsonTerryGaines County
Gaines County · RRC district 8AOpen Gaines County →
Gas, last 12 months
16,825 mcf
Oil in Jul 2026
5,400 bbl
Reporting to the state
since Jan 2020
Wells
203

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 6% over the last 12 months

71,745 bbl in the 12 months through Jul 2026, against 67,968 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output rose 6% over the last 12 monthsMonthly oil production and gas for FLANAGAN UNIT, Aug 2023 to Jul 2026. Oil output rose 6% over the last 12 months. 71,745 bbl in the 12 months through Jul 2026, against 67,968 bbl in the 12 months before.Last 12 months: 71,745 bblbbl per monthmcf per month002,5002,0005,0004,0007,5006,00010k8,00012.5k10kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 6% over the last 12 monthsMonthly oil production and gas for FLANAGAN UNIT, Aug 2023 to Jul 2026. Oil output rose 6% over the last 12 months. 71,745 bbl in the 12 months through Jul 2026, against 67,968 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,5002,0005,0004,0007,5006,00010k8,00012.5k10kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 66166, district 8A. 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.

50% of the gas went to flaring in the last 12 months

Flaring peaked at 100.0% of the gas in Dec 2025.

  • Transmission line (2)
  • Flared (4)
50% of the gas went to flaring in the last 12 monthsShare of FLANAGAN UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 50% of the gas went to flaring in the last 12 months. Flaring peaked at 100.0% of the gas in Dec 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 100.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
50% of the gas went to flaring in the last 12 monthsShare of FLANAGAN UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 50% of the gas went to flaring in the last 12 months. Flaring peaked at 100.0% of the gas in Dec 2025.Share of gas by disposition code0%50%100%Flared 100.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 66166, district 8A. Reported through Jul 2026.

Transmission line (2)

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

Flared (4)

Burned off or vented, not sold. It pays no royalty. More than 3% in a month is worth watching.

Over the last 12 months, 50.0% of the gas was flared. 20 months went above 3%, which we mark in the ledger below.

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 May 2026

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 timeOccidental Permian Ltd., Jan 2020 to Apr 2026; Hilcorp Energy Company, May 2026 to Jul 20262020202120222023202420252026Changed May 2026Occidental Permian Ltd.Jan 2020 to Apr 2026Hilcorp Energy CompanyMay 2026 to now
Operators of this lease over timeOccidental Permian Ltd., Jan 2020 to Apr 2026; Hilcorp Energy Company, May 2026 to Jul 20262020202120222023202420252026Changed May 2026Occidental Permian Ltd.Jan 2020 to Apr 2026Hilcorp Energy CompanyMay 2026 to now

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

Wells

200 wells on this lease

Every well the Railroad Commission links to oil lease 66166 in district 8A. The API number is the state’s ID for a well.
Wells on FLANAGAN UNIT
API numberWell no.Status
42-003-07568104WShut-in
42-165-008965WShut-in
42-165-008976WActive
42-165-008987WActive
42-165-0103678Active
42-165-0103779Active
42-165-0142496Active
42-165-01425100WActive
42-165-0146276Active
42-165-0146377Active
42-165-0156371WShut-in
42-165-0157041WActive
42-165-0157240Active
42-165-0157364Active
42-165-0166351WActive
42-165-0166550WActive
42-165-0166673WShut-in
42-165-0166742Active
42-165-0166872WActive
42-165-0166963WActive
42-165-0167053WActive
42-165-0167143Active
42-165-0167262Shut-in
42-165-0167361Active
42-165-0167824WActive
42-165-01682105WActive
42-165-0168383WActive
42-165-0168486WActive
42-165-0168585WActive
42-165-0168694WActive
42-165-0168784WActive
42-165-0168895WActive
42-165-0168993WShut-in
42-165-0169088Active
42-165-0169189Shut-in
42-165-0169291Active
42-165-0169390Shut-in
42-165-0169435WShut-in
42-165-0171170WActive
42-165-0228829WShut-in
42-165-0228921Active
42-165-0229031WShut-in
42-165-0229216Active
42-165-0229417Active
42-165-0229519Shut-in
42-165-0229620Shut-in
42-165-0229730WActive
42-165-0229818Shut-in
42-165-022993Shut-in
42-165-0230328WActive
42-165-0230415Shut-in
42-165-0230514Shut-in
42-165-0230626WActive
42-165-0230713Shut-in
42-165-0230825WActive
42-165-0230912Shut-in
42-165-0231027WActive
42-165-0235469WActive
42-165-0235549WActive
42-165-0235639WShut-in
42-165-0235775Active
42-165-0235848WShut-in
42-165-0235938Active
42-165-0236192WActive
42-165-0236237Shut-in
42-165-0236359Active
42-165-0236447WActive
42-165-0236557Active
42-165-0236636Shut-in
42-165-0236758Shut-in
42-165-0236846WActive
42-165-0236968WActive
42-165-0237056Active
42-165-0237167WActive
42-165-0238481WActive
42-165-0238580WActive
42-165-0238687WActive
42-165-0243811WActive
42-165-024398WActive
42-165-024409WActive
42-165-0244110WActive
42-165-024422Active
42-165-024431WShut-in
42-165-0250565Active
42-165-0250666Active
42-165-0250745Shut-in
42-165-0250855WActive
42-165-0250954WActive
42-165-0251044Active
42-165-0259360Active
42-165-02775103WActive
42-165-02776102WActive
42-165-0287423Active
42-165-0301822Shut-in
42-165-0309033WActive
42-165-0322597Shut-in
42-165-0324599WActive
42-165-0324698WActive
42-165-03248101WShut-in
42-165-1029774Active
42-165-31214107WActive
42-165-32245109WActive
42-165-3272832WRActive
42-165-32823111Shut-in
42-165-33531110Active
42-165-33617112Shut-in
42-165-33627113Shut-in
42-165-34336381Active
42-165-34337491Shut-in
42-165-34338391Active
42-165-34340481Active
42-165-34550291Shut-in
42-165-34551411Active
42-165-34552281Shut-in
42-165-34553401Shut-in
42-165-34558621Active
42-165-34559271Shut-in
42-165-34560511Active
42-165-34561611Active
42-165-34562591Active
42-165-34563501Active
42-165-34564421Shut-in
42-165-34565321Active
42-165-34566311Active
42-165-34567301Active
42-165-34570431Shut-in
42-165-34622521Shut-in
42-165-34623641Shut-in
42-165-34624631Shut-in
42-165-34625531Shut-in
42-165-34626201Shut-in
42-165-34634181Shut-in
42-165-34684161Active
42-165-34685191Shut-in
42-165-3468752WRActive
42-165-34688261Active
42-165-34689541Active
42-165-34709581Shut-in
42-165-34724651Active
42-165-34725441Active
42-165-34726331Shut-in
42-165-34743861Shut-in
42-165-34746741Active
42-165-34747791Active
42-165-34748871Active
42-165-34776471Shut-in
42-165-34777371Shut-in
42-165-34828461Shut-in
42-165-34829361Shut-in
42-165-34830811Shut-in
42-165-34837561Shut-in
42-165-34838571Shut-in
42-165-34839971Shut-in
42-165-34840981Active
42-165-348491031Shut-in
42-165-348501021Active
42-165-348511011Active
42-165-34852991Active
42-165-34946781Shut-in
42-165-34949881Shut-in
42-165-34950551Active
42-165-34951661Shut-in
42-165-34952671Shut-in
42-165-34953721Active
42-165-34954841Shut-in
42-165-34955851Shut-in
42-165-34982872Shut-in
42-165-35599451Active
42-165-35600221Active
42-165-359121381Active
42-165-359131491Active
42-165-359761481Active
42-165-359771039Shut-in
42-165-359781391Shut-in
42-165-359791038Active
42-165-363701742Active
42-165-363711741Shut-in
42-165-363791401Shut-in
42-165-363801501Shut-in
42-165-363831411Active
42-165-364821511Shut-in
42-165-364841431Shut-in
42-165-364851521Active
42-165-364861621Shut-in
42-165-365461371Shut-in
42-165-365471471Shut-in
42-165-365481571Shut-in
42-165-365491611Active
42-165-365501641Active
42-165-365511361Active
42-165-365531461Shut-in
42-165-365541531Shut-in
42-165-365551541Shut-in
42-165-365561561Shut-in
42-165-365571651Shut-in
42-165-366611781Active
42-165-366631861Shut-in
42-165-37403751Active
42-165-37404761Active
42-165-37433691Active

SourceTexas Railroad Commission Wellbore Query, district 8A, lease 66166.

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

    Energy Transfer Company gathers it.

    100% of it, on the list since May 1, 2026

  • Gas from oil wells

    Dcp Operating Company, LP buys and gathers it.

    Dcp Operating Company, LP buys it: 100% of it, on the list since Apr 1, 2017 · Dcp Operating Company, LP gathers it: 100% of it, on the list since Apr 1, 2017

Companies that used to be listed: Energy Transfer Company (gathers it, until May 1, 2026); Shell Pipeline Company LP (gathers it, until May 1, 2026); Centurion Pipeline L.p. (gathers it, until Apr 1, 2025); Shell Pipeline Company LP (gathers it, until Apr 1, 2025).

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

5,280 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
221181 not plugged
Horizontal
13
First completion
Jul 12, 1960
Latest permit
Nov 20, 2017

The wells on this lease state different acreage

The permits state between 600 and 5,820 acres. Use the acres from your own division order for the well you are paid on.

221 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 Flanagan Unit
API numberWell no.Acreson the permit
42-165-02295195,280
42-165-01462765,280
42-165-10297745,280
42-165-346236415,280
42-165-346255315,280
42-165-328231115,280
42-165-349785905,280
42-165-350255801,280
42-165-02363591,280
42-165-01463775,280
42-165-38293421R5,280
42-165-37759501R5,280

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 FLANAGAN 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. 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 FLANAGAN UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Hilcorp Energy5,4005,5106426420$80.46$2.89
Jun 2026Hilcorp Energy5,2824,9101,1241,1240$84.81$3.15
May 2026Hilcorp Energy6,9917,0222,1672,09572$102.13$2.94
Apr 2026Occidental Permian6,9236,9231,057627430$100.32$2.77
Mar 2026Occidental Permian7,2477,2445835803$91.38$3.04
Feb 2026Occidental Permian6,8836,8846616610$64.51$3.62
Jan 2026Occidental Permian6,6396,6681,7487121,036$60.04$7.72
Dec 2025Occidental Permian6,3276,30830030$57.97$4.26
Nov 2025Occidental Permian3,2093,20187075795$60.06$3.79
Oct 2025Occidental Permian5,8575,8532,8953042,591$60.89$3.19
Sep 2025Occidental Permian5,9655,9673,0689072,161$63.96$2.97
Aug 2025Occidental Permian5,0225,0171,9806801,300$64.86$2.91
Jul 2025Occidental Permian4,7314,7362,9622,94517$68.39$3.20
Jun 2025Occidental Permian4,7344,7332,9642,9640$68.17$3.02
May 2025Occidental Permian3,9123,9132,4442,4377$62.17$3.12
Apr 2025Occidental Permian3,9773,9782,5492,52920$63.54$3.42
Mar 2025Occidental Permian7,0937,0995,3395,3390$68.24$4.12
Feb 2025Occidental Permian6,2016,1993,9183,9180$71.53$4.19
Jan 2025Occidental Permian7,2697,2703,5693,5690$75.74$4.13
Dec 2024Occidental Permian8,2348,2313,0132,705308$70.12$3.01
Nov 2024Occidental Permian5,7245,7152,8882,761127$69.95$2.12
Oct 2024Occidental Permian4,4174,4231,9321,770162$71.99$2.20
Sep 2024Occidental Permian5,7665,7692,8172,8170$70.24$2.28
Aug 2024Occidental Permian5,9106,2922,5732,55518$76.68$1.99
Jul 2024Occidental Permian2,7162,6621,1091,04663$81.80$2.07
Jun 2024Occidental Permian2,0951,83995292923$79.77$2.54
May 2024Occidental Permian31260416931138$80.02$2.12
Apr 2024Occidental Permian1,8171,899620405215$85.35$1.60
Mar 2024Occidental Permian2,7122,639637213424$81.28$1.49
Feb 2024Occidental Permian1,9542,004630441189$77.25$1.72
Jan 2024Occidental Permian7,3847,3772,2732,19083$74.15$3.18
Dec 2023Occidental Permian10,14810,1543,1493,037112$71.90$2.52
Nov 2023Occidental Permian9,0159,0173,1302,804326$77.69$2.71
Oct 2023Occidental Permian10,13910,1363,4403,4400$85.64$2.98
Sep 2023Occidental Permian8,1168,1312,3042,2977$89.43$2.64
Aug 2023Occidental Permian6,2806,2472,0661,97987$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 FLANAGAN UNIT. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Hilcorp Energy Company.

Check my statementTry a sample owner
  • A month that was never paid
  • Your share of the barrels and mcf
  • The price against WTI and Henry Hub
  • Fees taken on gas
  • Late payment interest

Around this lease

Walk the neighborhood

Everything on this page connects to the operator, field and county records. Start from any of them.

This lease belongs to

OperatorHilcorp Energy CompanyFieldFlanagan (Clearfork, Cons.)CountyGaines County

Hilcorp Energy Company in Gaines County

All Hilcorp Energy Company leases →

Flanagan (Clearfork, Cons.) 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 66166, district 8A, 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.