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Producing

SHACKELFORD 40-12AF

Shackelford 40-12AF is an oil lease in Midland County, Texas, operated by Pioneer Natural Res. USA, Inc. in the Spraberry (Trend Area) field.

1 well

181,711bbl oil, last 12 months−45% vs prior year
Operator
Pioneer Natural Res. USA, Inc.
County
Midland County
Field
Spraberry (Trend Area)
RRC lease
08-61333

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Where it sits

This county

Midland CountyMidlandMartinAndrewsGlasscockHowardEctorMidland County
Midland County
Gas, last 12 months
530,735 mcf
Oil in Jul 2026
12,880 bbl

Production by month

Oil output fell 45% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 45% over the last 12 monthsMonthly oil production and gas for SHACKELFORD 40-12AF, Jul 2024 to Jul 2026. Oil output fell 45% over the last 12 months. 181,711 bbl in the 12 months through Jul 2026, against 329,408 bbl in the 12 months before.Last 12 months: 181,711 bblbbl per monthmcf per month0010k20k20k40k30k60k40k80k50k100kJul 24OctJan 25AprJulOctJan 26AprJul
Oil output fell 45% over the last 12 monthsMonthly oil production and gas for SHACKELFORD 40-12AF, Jul 2024 to Jul 2026. Oil output fell 45% over the last 12 months. 181,711 bbl in the 12 months through Jul 2026, against 329,408 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0010k20k20k40k30k60k40k80k50k100kJul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Over 99% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Over 99% of the gas went to a processing plant in the last 12 monthsShare of SHACKELFORD 40-12AF gas by disposition code each month, Jul 2024 to Jul 2026. Over 99% of the gas went to a processing plant in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Jul 24OctJan 25AprJulOctJan 26AprJul
Over 99% of the gas went to a processing plant in the last 12 monthsShare of SHACKELFORD 40-12AF gas by disposition code each month, Jul 2024 to Jul 2026. Over 99% of the gas went to a processing plant in the last 12 months.Share of gas by disposition code0%50%100%Jul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    100% · 528,538 mcf

  • Flared (4)

    0.3% · 1,734 mcf

  • Lease fuel (1)

    0.1% · 463 mcf

0.3% of the gas flared in the last 12 months. No month above 3%.

1 well on this lease

Wells on SHACKELFORD 40-12AF
API numberWell no.Status
42-329-4594832HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Energy Transfer CompanyOilGathers34Apr 1, 2025–
Anchor Crude Marketing, LLCOilGathers33Jul 1, 2024–
Plains Marketing, L.p.OilGathers33Jul 1, 2024–
Targa Pl Mid-Cont Westtex LLCCasinghead gasBuys100Jan 11, 2024–
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers100Jan 11, 2024–
Centurion Pipeline L.p.OilGathers34Jul 1, 2024Apr 1, 2025
Centurion Pipeline L.p.OilGathers80Jan 11, 2024Jul 1, 2024
Oasis Transp & Marketing Corp.OilGathers10Jan 11, 2024Jul 1, 2024
Plains Marketing, L.p.OilGathers10Jan 11, 2024Jul 1, 2024

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

Who buys my oilOil price check

1,638.90 acres on the newest permit

  • Worth asking

    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.

  • 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 Shackelford 40-12AF
API numberWell no.Acreson the permit
42-329-4594832H1,638.90

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

Unit decimal checker

Estimate your royalty

25 months, newest first

Ledger for SHACKELFORD 40-12AF
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202612,88012,88550,44650,35353$80.46$2.89
Jun 202612,68712,68443,38243,29245$84.81$3.15
May 202613,39113,40350,86750,8200$102.13$2.94
Apr 202616,20416,19844,83244,77518$100.32$2.77
Mar 202615,30715,27631,01030,96322$91.38$3.04
Feb 20262,4432,4687,5417,50134$64.51$3.62
Jan 202616,69716,70262,16261,801315$60.04$7.72
Dec 202517,70917,70757,61756,3871,187$57.97$4.26
Nov 202519,22019,21058,02957,94933$60.06$3.79
Oct 202519,23319,23946,43346,38410$60.89$3.19
Sep 202517,78417,82039,12839,0901$63.96$2.97
Aug 202518,15618,24839,28839,22316$64.86$2.91
Jul 202517,46417,41137,50437,4151$68.39$3.20
Jun 202521,68521,65450,20050,1093$68.17$3.02
May 202513,74513,77821,26021,11287$62.17$3.12
Apr 202524,38624,37551,08750,95629$63.54$3.42
Mar 202526,43426,48749,75449,6730$68.24$4.12
Feb 202526,23826,19242,94542,8742$71.53$4.19
Jan 202530,08430,08846,81046,601123$75.74$4.13
Dec 202431,12331,17841,98941,9240$70.12$3.01
Nov 202430,61330,52733,59533,5381$69.95$2.12
Oct 202432,84632,85935,08535,0281$71.99$2.20
Sep 202434,20734,20237,55537,4902$70.24$2.28
Aug 202440,58340,57257,02756,89313$76.68$1.99
Jul 202420,20020,12827,97627,82043$81.80$2.07

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

OperatorPioneer Natural Res. USA, Inc.FieldSpraberry (Trend Area)CountyMidland County

Pioneer Natural Res. USA, Inc. in Midland County

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