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Texas oil lease

Producing

STILES 18C

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

1 well

495bbl oil, last 12 months−4% vs prior year
Operator
Formentera Operations LLC
County
Wheeler County
Field
Mills Ranch (Granite Wash Cons.)
RRC lease
10-09195

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Where it sits

This county

Wheeler CountyWheelerGrayHemphillRobertsWheeler County
Wheeler County
Gas, last 12 months
11,519 mcf
Oil in Jul 2026
27 bbl

Production by month

Oil output fell 4% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 4% over the last 12 monthsMonthly oil production and gas for STILES 18C, Aug 2023 to Jul 2026. Oil output fell 4% over the last 12 months. 495 bbl in the 12 months through Jul 2026, against 515 bbl in the 12 months before.Last 12 months: 495 bblbbl per monthmcf per month0020500401,000601,500802,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 4% over the last 12 monthsMonthly oil production and gas for STILES 18C, Aug 2023 to Jul 2026. Oil output fell 4% over the last 12 months. 495 bbl in the 12 months through Jul 2026, against 515 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0020500401,000601,500802,000Jan 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 18C 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 18C 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% · 9,388 mcf

  • Lease fuel (1)

    18% · 2,131 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 18C
API numberWell no.Status
42-483-338471918HActive

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.OilGathers100Oct 1, 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 18C
API numberWell no.Acreson the permit
42-483-338471918H40

SourceRailroad Commission drilling permits, Oct 3, 2026 (source 1, source 2).

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for STILES 18C
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Formentera Operations2727896360$80.46$2.89
Jun 2026Formentera Operations451128066520$84.81$3.15
May 2026Formentera Operations4047516070$102.13$2.94
Apr 2026Formentera Operations4261,0338400$100.32$2.77
Mar 2026Formentera Operations5359978160$91.38$3.04
Feb 2026Formentera Operations71558517000$64.51$3.62
Jan 2026Formentera Operations5769997920$60.04$7.72
Dec 2025Formentera Operations6159527800$57.97$4.26
Nov 2025Formentera Operations381839557790$60.06$3.79
Oct 2025Formentera Operations4981,0398490$60.89$3.19
Sep 2025Formentera Operations5961,0668750$63.96$2.97
Aug 2025Formentera Operations1761,2811,0620$64.86$2.91
Jul 2025Formentera Operations5471,2179710$68.39$3.20
Jun 2025Formentera Operations341851,0658400$68.17$3.02
May 2025Formentera Operations3881,0929000$62.17$3.12
Apr 2025Formentera Operations57771,0058270$63.54$3.42
Mar 2025Formentera Operations4451,0969070$68.24$4.12
Feb 2025Formentera Operations3548727160$71.53$4.19
Jan 2025Formentera Operations34688757150$75.74$4.13
Dec 2024Formentera Operations5051,0208420$70.12$3.01
Nov 2024Formentera Operations39609237510$69.95$2.12
Oct 2024Formentera Operations4369387690$71.99$2.20
Sep 2024Formentera Operations501931,0118360$70.24$2.28
Aug 2024Formentera Operations3741,0708910$76.68$1.99
Jul 2024Formentera Operations32551,0318570$81.80$2.07
Jun 2024Formentera Operations5231,0158230$79.77$2.54
May 2024Formentera Operations4761,0868900$80.02$2.12
Apr 2024Formentera Operations5361,0468620$85.35$1.60
Mar 2024Formentera Operations4261,0718840$81.28$1.49
Feb 2024Formentera Operations441911,0889000$77.25$1.72
Jan 2024Formentera Operations6751,1209130$74.15$3.18
Dec 2023Formentera Operations2771,1719650$71.90$2.52
Nov 2023Formentera Operations5879007440$77.69$2.71
Oct 2023Formentera Operations572439367780$85.64$2.98
Sep 2023Formentera Operations4051,0789030$89.43$2.64
Aug 2023Formentera Operations7341,0718880$81.39$2.58

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

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Nearby

This lease belongs to

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

Formentera Operations LLC in Wheeler County

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Mills Ranch (Granite Wash Cons.) field

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