Skip to content
Royalty Clerk

Texas oil lease

Producing

STILES 18B

Stiles 18B is an oil lease in Wheeler County, Texas, operated by Formentera Operations LLC in the Mills Ranch (Granite Wash Cons.) field.

1 well

946bbl oil, last 12 months+58% vs prior year
Operator
Formentera Operations LLC
County
Wheeler County
Field
Mills Ranch (Granite Wash Cons.)
RRC lease
10-09235

Is your check right?

Check my statement

Where it sits

This county

Wheeler CountyWheelerGrayHemphillRobertsWheeler County
Wheeler County
Gas, last 12 months
12,862 mcf
Oil in Jul 2026
187 bbl

Production by month

Oil output rose 58% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 58% over the last 12 monthsMonthly oil production and gas for STILES 18B, Aug 2023 to Jul 2026. Oil output rose 58% over the last 12 months. 946 bbl in the 12 months through Jul 2026, against 598 bbl in the 12 months before.Last 12 months: 946 bblbbl per monthmcf per month00505001001,0001501,5002002,0002502,500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 58% over the last 12 monthsMonthly oil production and gas for STILES 18B, Aug 2023 to Jul 2026. Oil output rose 58% over the last 12 months. 946 bbl in the 12 months through Jul 2026, against 598 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month00505001001,0001501,5002002,0002502,500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

82% of the gas went to a transmission line in the last 12 months

  • Transmission line (2)
  • Lease fuel (1)
82% of the gas went to a transmission line in the last 12 monthsShare of STILES 18B gas by disposition code each month, Aug 2023 to Jul 2026. 82% 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
82% of the gas went to a transmission line in the last 12 monthsShare of STILES 18B gas by disposition code each month, Aug 2023 to Jul 2026. 82% 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, through Jul 2026.

  • Transmission line (2)

    82% · 10,501 mcf

  • Lease fuel (1)

    18% · 2,361 mcf

Who has run this lease

The operator changed once, most recently in Jun 2021

Operators of this lease over timeTapstone Energy, LLC, Jan 2020 to May 2021; Formentera Operations LLC, Jun 2021 to Jul 20262020202120222023202420252026Changed Jun 2021Tapstone Energy, LLCJan 2020 to May 2021Formentera Operations LLCJun 2021 to now
Operators of this lease over timeTapstone Energy, LLC, Jan 2020 to May 2021; Formentera Operations LLC, Jun 2021 to Jul 20262020202120222023202420252026Changed Jun 2021Tapstone Energy, LLCJan 2020 to May 2021Formentera Operations LLCJun 2021 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on STILES 18B
API numberWell no.Status
42-483-338442018HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Energy Trans Crude Marketing LLCOilGathers50Nov 19, 2025–
Plains Marketing, L.p.OilGathers50Nov 19, 2025–
Formentera Operations LLCCasinghead gasBuys100Jul 1, 2021–
Energy Transfer CompanyCasinghead gasGathers100Oct 1, 2023–
Plains Marketing, L.p.OilGathers100Sep 29, 2014Nov 19, 2025
Enable Gas Gathering, LLCCasinghead gasGathers100Jan 1, 2015Oct 1, 2023
Tapstone Energy, LLCCasinghead gasBuys100Jan 1, 2015Jul 1, 2021

SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).

Who buys my oilOil price check

40 acres on the newest permit

  • Worth asking

    A Rule 37 case is listed

    The RRC permit records list a Rule 37 case. This does not establish your royalty share. Ask for the permit and unit plat for your well.

Check your decimal on this lease
Permits for Stiles 18B
API numberWell no.Acreson the permit
42-483-338442018H40

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for STILES 18B
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Formentera Operations1872261,2259880$80.46$2.89
Jun 2026Formentera Operations1701531,1919640$84.81$3.15
May 2026Formentera Operations151971,2591,0170$102.13$2.94
Apr 2026Formentera Operations136461,1149080$100.32$2.77
Mar 2026Formentera Operations251479958140$91.38$3.04
Feb 2026Formentera Operations27229597890$64.51$3.62
Jan 2026Formentera Operations67149477780$60.04$7.72
Dec 2025Formentera Operations11141,0258400$57.97$4.26
Nov 2025Formentera Operations16119807990$60.06$3.79
Oct 2025Formentera Operations25401,0278390$60.89$3.19
Sep 2025Formentera Operations841671,0258400$63.96$2.97
Aug 2025Formentera Operations47561,1159250$64.86$2.91
Jul 2025Formentera Operations56381,5681,2540$68.39$3.20
Jun 2025Formentera Operations58531,5091,1890$68.17$3.02
May 2025Formentera Operations33491,5291,2600$62.17$3.12
Apr 2025Formentera Operations103922,1691,7830$63.54$3.42
Mar 2025Formentera Operations731001,4321,1850$68.24$4.12
Feb 2025Formentera Operations61301,6801,4010$71.53$4.19
Jan 2025Formentera Operations38401,5741,2830$75.74$4.13
Dec 2024Formentera Operations37401,5651,2920$70.12$3.01
Nov 2024Formentera Operations63601,5551,2650$69.95$2.12
Oct 2024Formentera Operations41391,5631,2810$71.99$2.20
Sep 2024Formentera Operations16121,3901,1500$70.24$2.28
Aug 2024Formentera Operations19231,4231,1860$76.68$1.99
Jul 2024Formentera Operations18141,5181,2610$81.80$2.07
Jun 2024Formentera Operations40521,3741,1150$79.77$2.54
May 2024Formentera Operations79731,4201,1640$80.02$2.12
Apr 2024Formentera Operations48521,4771,2170$85.35$1.60
Mar 2024Formentera Operations48381,4131,1660$81.28$1.49
Feb 2024Formentera Operations57851,2631,0440$77.25$1.72
Jan 2024Formentera Operations75861,9201,5640$74.15$3.18
Dec 2023Formentera Operations99651,7991,4850$71.90$2.52
Nov 2023Formentera Operations93201,8821,5550$77.69$2.71
Oct 2023Formentera Operations461941,8701,5540$85.64$2.98
Sep 2023Formentera Operations91501,9251,6120$89.43$2.64
Aug 2023Formentera Operations8082,2941,9020$81.39$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

How to check your stub against this lease Checks stopped on this lease? See the likely reasons

Do your checks match this lease?

Check my statement

Nearby

This lease belongs to

OperatorFormentera Operations LLCFieldMills Ranch (Granite Wash Cons.)CountyWheeler County

Formentera Operations LLC in Wheeler County

All Formentera Operations LLC leases →

Mills Ranch (Granite Wash Cons.) field

All leases in this field →

Leases within 10 km

New drilling permits in Wheeler County

Newest in the county: this lease has no coordinates.