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Texas oil lease

Producing

SHERMINATOR 12-13 C

Sherminator 12-13 C is an oil lease in Glasscock County, Texas, operated by Black Swan Opco, LLC in the Spraberry (Trend Area) field.

2 wells

84,799bbl oil, last 12 months
Operator
Black Swan Opco, LLC
County
Glasscock County
Field
Spraberry (Trend Area)
RRC lease
08-62428

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Where it sits

This county

Glasscock CountyGlasscockMitchellMartinSterlingMidlandHowardGlasscock County
Glasscock County
Gas, last 12 months
426,223 mcf
Oil in Jul 2026
6,481 bbl

Production by month

Oil output fell 75% since Oct 2024

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 75% since Oct 2024Monthly oil production and gas for SHERMINATOR 12-13 C, Oct 2024 to Jul 2026. Oil output fell 75% since Oct 2024. Monthly average of 5,945 bbl in the latest 3 months, against 23,434 bbl in the first 3.Last 12 months: 84,799 bblbbl per monthmcf per month0010k20k20k40k30k60k40k80kOct 24Jan 25AprJulOctJan 26AprJul
Oil output fell 75% since Oct 2024Monthly oil production and gas for SHERMINATOR 12-13 C, Oct 2024 to Jul 2026. Oil output fell 75% since Oct 2024. Monthly average of 5,945 bbl in the latest 3 months, against 23,434 bbl in the first 3.Last 12 monthsbbl per monthmcf per month0010k20k20k40k30k60k40k80kJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

90% of the gas went to a processing plant in the last 12 months

Flaring peaked at 100.0% of the gas in Oct 2024.

  • Processing plant (3)
  • Flared (4)
90% of the gas went to a processing plant in the last 12 monthsShare of SHERMINATOR 12-13 C gas by disposition code each month, Oct 2024 to Jul 2026. 90% of the gas went to a processing plant in the last 12 months. Flaring peaked at 100.0% of the gas in Oct 2024.Share of the lease’s gas by disposition code, per month0%50%100%Flared 100.0%Oct 24Jan 25AprJulOctJan 26AprJul
90% of the gas went to a processing plant in the last 12 monthsShare of SHERMINATOR 12-13 C gas by disposition code each month, Oct 2024 to Jul 2026. 90% of the gas went to a processing plant in the last 12 months. Flaring peaked at 100.0% of the gas in Oct 2024.Share of gas by disposition code0%50%100%Flared 100.0%Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    90% · 382,663 mcf

  • Flared (4)

    10% · 43,560 mcf

10.2% of the gas flared in the last 12 months. 6 months above 3%.

2 wells on this lease

Wells on SHERMINATOR 12-13 C
API numberWell no.Status
42-173-391295WBActive
42-173-391306WDActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Eastex Crude Company, LLCOilGathers50Nov 1, 2024
Plains Marketing, L.p.OilGathers50Nov 1, 2024
Targa Pl Mid-Cont Westtex LLCCasinghead gasBuys100Nov 1, 2024
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers100Nov 1, 2024

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

Who buys my oilOil price check

600.84 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 Sherminator 12-13 C
API numberWell no.Acreson the permit
42-173-391295WB600.84
42-173-391306WD600.84

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

Unit decimal checker

Estimate your royalty

22 months, newest first

Ledger for SHERMINATOR 12-13 C
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20266,4816,26330,92330,9230$80.46$2.89
Jun 20265,5495,43129,94729,9470$84.81$3.15
May 20265,8065,90033,44833,4480$102.13$2.94
Apr 20266,6846,61538,05538,0550$100.32$2.77
Mar 20266,9716,97439,65739,6570$91.38$3.04
Feb 20266,9986,97834,66230,8273,835$64.51$3.62
Jan 20265,1245,20328,4277028,357$60.04$7.72
Dec 20257,7907,81442,43539,3733,062$57.97$4.26
Nov 20258,6728,58642,21033,9258,285$60.06$3.79
Oct 20259,3979,35031,32831,3280$60.89$3.19
Sep 20256,0216,04129,08229,06121$63.96$2.97
Aug 20259,3069,41846,04946,0490$64.86$2.91
Jul 20259,5349,47941,85741,743114$68.39$3.20
Jun 202510,63410,78344,75244,7520$68.17$3.02
May 202512,07912,08250,12650,1260$62.17$3.12
Apr 202513,34613,17850,53950,5390$63.54$3.42
Mar 202515,51915,62458,74658,7460$68.24$4.12
Feb 202516,64116,54356,66456,6640$71.53$4.19
Jan 202523,06923,11370,70570,7050$75.74$4.13
Dec 202432,60732,83277,30477,047257$70.12$3.01
Nov 202437,37536,84756,22546,6109,615$69.95$2.12
Oct 20243202841,15101,151$71.99$2.20

Flared above 3%

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

OperatorBlack Swan Opco, LLCFieldSpraberry (Trend Area)CountyGlasscock County

Black Swan Opco, LLC in Glasscock County

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Spraberry (Trend Area) field

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