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Royalty Clerk

Texas gas well

Producing

BLACKJACK UNIT D

Blackjack Unit D is a gas well in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

1 well

26,923mcf gas, last 12 months+88% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-285882

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
3,113 bbl
Gas in Jul 2026
14,517 mcf

Production by month

Gas output rose 88% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output rose 88% over the last 12 monthsMonthly gas production and oil for BLACKJACK UNIT D, Aug 2023 to Jul 2026. Gas output rose 88% over the last 12 months. 26,923 mcf in the 12 months through Jul 2026, against 14,326 mcf in the 12 months before.Last 12 months: 26,923 mcfmcf per monthbbl per month005,00050010k1,00015k1,50020k2,00025k2,500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output rose 88% over the last 12 monthsMonthly gas production and oil for BLACKJACK UNIT D, Aug 2023 to Jul 2026. Gas output rose 88% over the last 12 months. 26,923 mcf in the 12 months through Jul 2026, against 14,326 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month005,00050010k1,00015k1,50020k2,00025k2,500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

80% of the gas went to a processing plant in the last 12 months

Flaring peaked at 3.6% of the gas in Apr 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
80% of the gas went to a processing plant in the last 12 monthsShare of BLACKJACK UNIT D gas by disposition code each month, Aug 2023 to Jul 2026. 80% of the gas went to a processing plant in the last 12 months. Flaring peaked at 3.6% of the gas in Apr 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 3.6%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
80% of the gas went to a processing plant in the last 12 monthsShare of BLACKJACK UNIT D gas by disposition code each month, Aug 2023 to Jul 2026. 80% of the gas went to a processing plant in the last 12 months. Flaring peaked at 3.6% of the gas in Apr 2026.Share of gas by disposition code0%50%100%Flared 3.6%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    80% · 23,871 mcf

  • Lease fuel (1)

    20% · 5,927 mcf

  • Flared (4)

    0.6% · 193 mcf

0.6% of the gas flared in the last 12 months. 2 months above 3%.

1 well on this lease

Wells on BLACKJACK UNIT D
API numberWell no.Status
42-255-335116HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCCondensateGathers50Jun 1, 2020–
Plains Pipeline L.p.CondensateGathers25Jun 1, 2020–
Reynolds Energy Transport LLCCondensateGathers25Jul 1, 2022–
Marathon Oil Ef LLCGas-well gasBuys100Jul 4, 2014–
Marathon Oil Ef LLCGas-well gasGathers100Jul 4, 2014–
Gulfmark Energy, Inc.CondensateGathers25Jun 1, 2020Jul 1, 2022
Enterprise Crude Oil LLCCondensateGathers1Jul 4, 2014Jun 1, 2020
Gulfmark Energy, Inc.CondensateGathers1Jul 4, 2014Jun 1, 2020
Plains Pipeline L.p.CondensateGathers97Jul 4, 2014Jun 1, 2020
Trafigura Trading LLCCondensateGathers1Jul 4, 2014Jun 1, 2020

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

Who buys my oilOil price check

394.68 acres on the newest permit

  • Good to know

    A pooling certificate (P-12) was filed

    Your tract may share its production with neighbors in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one 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 Blackjack Unit D
API numberWell no.Acreson the permit
42-255-335116H394.68

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

Unit decimal checker

What ConocoPhillips told investors it received

Marathon Oil Ef LLC is linked to ConocoPhillips (MRO).
Realized prices reported by ConocoPhillips
QuarterOil$ per bblFiling
Q2 2026$99.40SEC filing
Q1 2026$73.47SEC filing
Q3 2025$66.13SEC filing
Q2 2025$64.23SEC filing
Q1 2025$71.65SEC filing

SourceConocoPhillips quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for BLACKJACK UNIT D
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262,4802,37114,51712,18035$80.46$2.89
Jun 20264432201$84.81$3.15
May 202606000$102.13$2.94
Apr 20266471111804$100.32$2.77
Mar 202617916791681$91.38$3.04
Feb 20261114110$64.51$3.62
Jan 20265857540$60.04$7.72
Dec 202554543402475$57.97$4.26
Nov 202582826625267$60.06$3.79
Oct 202567705,5544,27958$60.89$3.19
Sep 202597924,7683,76658$63.96$2.97
Aug 202517228426395$64.86$2.91
Jul 20251091103,0682,06119$68.39$3.20
Jun 20251301266,9245,24157$68.17$3.02
May 202582826514942$62.17$3.12
Apr 202568667966033$63.54$3.42
Mar 20252120110$68.24$4.12
Feb 202500000$71.53$4.19
Jan 202500000$75.74$4.13
Dec 202402000$70.12$3.01
Nov 20244847116911$69.95$2.12
Oct 2024394057461$71.99$2.20
Sep 202480862602121$70.24$2.28
Aug 20242022092,4532,0105$76.68$1.99
Jul 20243123012,7682,3188$81.80$2.07
Jun 20241371382,1201,8064$79.77$2.54
May 20241621602,4732,1055$80.02$2.12
Apr 20241321332,3381,9847$85.35$1.60
Mar 20241411433,2632,8459$81.28$1.49
Feb 20242822957,8107,06813$77.25$1.72
Jan 20247517375,1704,43433$74.15$3.18
Dec 20232832872,0151,40611$71.90$2.52
Nov 20234644693,5002,99211$77.69$2.71
Oct 20238268147,7137,00113$85.64$2.98
Sep 20231601647,2886,29215$89.43$2.64
Aug 20234754742,9132,3487$81.39$2.58

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

OperatorMarathon Oil Ef LLCFieldEagleville (Eagle Ford-2)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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