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Texas oil lease

Producing

SHACKELFORD 40-12B

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

1 well

84,282bbl oil, last 12 months−32% vs prior year
Operator
Pioneer Natural Res. USA, Inc.
County
Midland County
Field
Spraberry (Trend Area)
RRC lease
08-59502

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Where it sits

This county

Midland CountyMidlandMartinAndrewsGlasscockHowardEctorMidland County
Midland County
Gas, last 12 months
369,939 mcf
Oil in Jul 2026
5,951 bbl

Production by month

Oil output fell 32% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 32% over the last 12 monthsMonthly oil production and gas for SHACKELFORD 40-12B, Aug 2023 to Jul 2026. Oil output fell 32% over the last 12 months. 84,282 bbl in the 12 months through Jul 2026, against 124,245 bbl in the 12 months before.Last 12 months: 84,282 bblbbl per monthmcf per month0010k20k20k40k30k60k40k80k50k100kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 32% over the last 12 monthsMonthly oil production and gas for SHACKELFORD 40-12B, Aug 2023 to Jul 2026. Oil output fell 32% over the last 12 months. 84,282 bbl in the 12 months through Jul 2026, against 124,245 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0010k20k20k40k30k60k40k80k50k100kJan 24JulJan 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 40-12B gas by disposition code each month, Aug 2023 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%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Over 99% of the gas went to a processing plant in the last 12 monthsShare of SHACKELFORD 40-12B gas by disposition code each month, Aug 2023 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%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    100% · 368,529 mcf

  • Flared (4)

    0.3% · 1,090 mcf

  • Lease fuel (1)

    0.1% · 320 mcf

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

1 well on this lease

Wells on SHACKELFORD 40-12B
API numberWell no.Status
42-329-458462HActive

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 gasBuys100Mar 30, 2023–
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers100Mar 30, 2023–
Centurion Pipeline L.p.OilGathers34Jul 1, 2024Apr 1, 2025
Centurion Pipeline L.p.OilGathers80Mar 30, 2023Jul 1, 2024
Oasis Transp & Marketing Corp.OilGathers10Mar 30, 2023Jul 1, 2024
Plains Marketing, L.p.OilGathers10Mar 30, 2023Jul 1, 2024

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

Who buys my oilOil price check

1,472.70 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 40-12B
API numberWell no.Acreson the permit
42-329-458462H1,472.70

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for SHACKELFORD 40-12B
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20265,9515,95334,53934,47437$80.46$2.89
Jun 20265,7435,74129,27529,21430$84.81$3.15
May 20266,0056,00733,20333,1720$102.13$2.94
Apr 20265,8865,88732,72132,67814$100.32$2.77
Mar 20266,8806,87232,55132,50223$91.38$3.04
Feb 20263,5763,58219,55819,45389$64.51$3.62
Jan 20267,9317,93136,30236,090185$60.04$7.72
Dec 20256,9806,98132,73632,034677$57.97$4.26
Nov 20258,8308,82934,84534,79620$60.06$3.79
Oct 202511,62211,62443,09143,0469$60.89$3.19
Sep 202510,03310,03429,71729,6881$63.96$2.97
Aug 20254,8454,82811,40111,3825$64.86$2.91
Jul 202592137000$68.39$3.20
Jun 20259,3959,39740,21840,1442$68.17$3.02
May 20258,7088,70632,59032,360135$62.17$3.12
Apr 202510,31510,31338,64938,54922$63.54$3.42
Mar 202511,87711,90041,32741,2590$68.24$4.12
Feb 202511,68811,67238,97038,9042$71.53$4.19
Jan 202514,58214,59542,95942,764115$75.74$4.13
Dec 202418,25718,22740,52040,4560$70.12$3.01
Nov 20246,3056,30110,49710,4790$69.95$2.12
Oct 202412,50212,50324,32424,2831$71.99$2.20
Sep 202411,69711,68520,45320,4171$70.24$2.28
Aug 20248,8278,82912,43812,4093$76.68$1.99
Jul 20245,7295,9817,4407,39911$81.80$2.07
Jun 20249,7739,58122,80322,3970$79.77$2.54
May 202415,15015,14838,73038,5403$80.02$2.12
Apr 202415,81715,86939,15038,9790$85.35$1.60
Mar 202418,16318,15443,50843,3174$81.28$1.49
Feb 202418,98919,03841,68141,47152$77.25$1.72
Jan 202422,60222,55951,35651,1421$74.15$3.18
Dec 202326,23426,26847,93247,7511$71.90$2.52
Nov 202330,36430,29253,00952,8161$77.69$2.71
Oct 202334,95334,98451,51251,3060$85.64$2.98
Sep 202341,74841,73452,42152,2385$89.43$2.64
Aug 202348,76748,77754,69454,42741$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

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

Pioneer Natural Res. USA, Inc. in Midland County

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Spraberry (Trend Area) field

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