Skip to content
Royalty Clerk

Texas oil lease

Producing

SHACKELFORD 40-12AC

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

1 well

82,241bbl oil, last 12 months−67% vs prior year
Operator
Pioneer Natural Res. USA, Inc.
County
Midland County
Field
Spraberry (Trend Area)
RRC lease
08-61628

Is your check right?

Check my statement

Where it sits

This county

Midland CountyMidlandMartinAndrewsGlasscockHowardEctorMidland County
Midland County
Gas, last 12 months
651,307 mcf
Oil in Jul 2026
5,642 bbl

Production by month

Oil output fell 67% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 67% over the last 12 monthsMonthly oil production and gas for SHACKELFORD 40-12AC, Jul 2024 to Jul 2026. Oil output fell 67% over the last 12 months. 82,241 bbl in the 12 months through Jul 2026, against 246,835 bbl in the 12 months before.Last 12 months: 82,241 bblbbl per monthmcf per month0010k20k20k40k30k60k40k80k50k100kJul 24OctJan 25AprJulOctJan 26AprJul
Oil output fell 67% over the last 12 monthsMonthly oil production and gas for SHACKELFORD 40-12AC, Jul 2024 to Jul 2026. Oil output fell 67% over the last 12 months. 82,241 bbl in the 12 months through Jul 2026, against 246,835 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

97% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
97% of the gas went to a processing plant in the last 12 monthsShare of SHACKELFORD 40-12AC gas by disposition code each month, Jul 2024 to Jul 2026. 97% 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
97% of the gas went to a processing plant in the last 12 monthsShare of SHACKELFORD 40-12AC gas by disposition code each month, Jul 2024 to Jul 2026. 97% 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)

    97% · 633,876 mcf

  • Lease fuel (1)

    2.4% · 15,418 mcf

  • Flared (4)

    0.3% · 2,013 mcf

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

1 well on this lease

Wells on SHACKELFORD 40-12AC
API numberWell no.Status
42-329-4594329HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Energy Transfer CompanyOilGathers34Apr 1, 2025–
Oasis Transp & Marketing Corp.OilGathers33Apr 1, 2025–
Plains Marketing, L.p.OilGathers33Apr 1, 2025–
Targa Pl Mid-Cont Westtex LLCCasinghead gasBuys100Feb 27, 2024–
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers100Feb 27, 2024–
Centurion Pipeline L.p.OilGathers80Feb 27, 2024Apr 1, 2025
Oasis Transp & Marketing Corp.OilGathers10Feb 27, 2024Apr 1, 2025
Plains Marketing, L.p.OilGathers10Feb 27, 2024Apr 1, 2025

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 40-12AC
API numberWell no.Acreson the permit
42-329-4594329H1,638.90

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

Unit decimal checker

Estimate your royalty

25 months, newest first

Ledger for SHACKELFORD 40-12AC
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20265,6425,64564,19162,71867$80.46$2.89
Jun 20265,7765,77763,34461,62564$84.81$3.15
May 20266,9956,99771,86470,1730$102.13$2.94
Apr 20266,7216,72271,11269,53629$100.32$2.77
Mar 20267,9097,90568,47967,08448$91.38$3.04
Feb 20266,8116,80963,85162,400287$64.51$3.62
Jan 20266,8786,88164,87963,337326$60.04$7.72
Dec 20257,9237,91956,39154,0691,146$57.97$4.26
Nov 20257,0467,04240,29339,34423$60.06$3.79
Oct 20256,9766,97527,41526,7406$60.89$3.19
Sep 20254,6134,63816,11215,6850$63.96$2.97
Aug 20258,9518,99343,37641,16517$64.86$2.91
Jul 20259,5159,49546,71344,7521$68.39$3.20
Jun 202511,31711,32559,65457,7443$68.17$3.02
May 202511,57711,56938,41336,816153$62.17$3.12
Apr 202512,46312,46452,30750,38029$63.54$3.42
Mar 202515,27815,30959,84058,2710$68.24$4.12
Feb 202515,08115,04956,17254,6953$71.53$4.19
Jan 202515,92415,94556,51954,674147$75.74$4.13
Dec 202421,84421,89375,89074,0171$70.12$3.01
Nov 202423,57523,51965,88364,4041$69.95$2.12
Oct 202429,70429,73673,96072,2883$71.99$2.20
Sep 202438,79138,77680,14378,1943$70.24$2.28
Aug 202441,76641,78660,26258,50114$76.68$1.99
Jul 202429,55429,44932,05431,87848$81.80$2.07

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

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

Pioneer Natural Res. USA, Inc. in Midland County

All Pioneer Natural Res. USA, Inc. leases →

Spraberry (Trend Area) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km