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Producing

BILSKY-CHUMCHAL SA1

Bilsky-Chumchal Sa1 is an oil lease in Gonzales County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

1 well

20,831bbl oil, last 12 months−30% vs prior year
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-20697

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Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Gas, last 12 months
37,495 mcf
Oil in Jul 2026
902 bbl

Checks stopped on this lease?

  • Buyer

    Buyer changed: ENERGY TRANSFER COMPANY replaced MARATHON OIL EF LLC as the buyer of this lease's gas from oil wells on Sep 1, 2026.

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

See why checks stop on this lease

Production by month

Oil output fell 30% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 30% over the last 12 monthsMonthly oil production and gas for BILSKY-CHUMCHAL SA1, Aug 2023 to Jul 2026. Oil output fell 30% over the last 12 months. 20,831 bbl in the 12 months through Jul 2026, against 29,767 bbl in the 12 months before.Last 12 months: 20,831 bblbbl per monthmcf per month002,0002,5004,0005,0006,0007,5008,00010k10k12.5kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 30% over the last 12 monthsMonthly oil production and gas for BILSKY-CHUMCHAL SA1, Aug 2023 to Jul 2026. Oil output fell 30% over the last 12 months. 20,831 bbl in the 12 months through Jul 2026, against 29,767 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,0002,5004,0005,0006,0007,5008,00010k10k12.5kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

83% of the gas went to a processing plant in the last 12 months

Flaring peaked at 7.9% of the gas in Jul 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
83% of the gas went to a processing plant in the last 12 monthsShare of BILSKY-CHUMCHAL SA1 gas by disposition code each month, Aug 2023 to Jul 2026. 83% of the gas went to a processing plant in the last 12 months. Flaring peaked at 7.9% of the gas in Jul 2024.Share of the lease’s gas by disposition code, per month0%50%100%Flared 7.9%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
83% of the gas went to a processing plant in the last 12 monthsShare of BILSKY-CHUMCHAL SA1 gas by disposition code each month, Aug 2023 to Jul 2026. 83% of the gas went to a processing plant in the last 12 months. Flaring peaked at 7.9% of the gas in Jul 2024.Share of gas by disposition code0%50%100%Flared 7.9%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    83% · 31,099 mcf

  • Lease fuel (1)

    16% · 5,866 mcf

  • Flared (4)

    1.4% · 530 mcf

1.4% of the gas flared in the last 12 months. 10 months above 3%.

1 well on this lease

Wells on BILSKY-CHUMCHAL SA1
API numberWell no.Status
42-177-345001HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Mv Purchasing, LLCOilGathers34Sep 1, 2026–
Plains Marketing, L.p.OilGathers33Sep 1, 2026–
Shell Trading (Us) CompanyOilGathers33Sep 1, 2026–
Energy Transfer CompanyCasinghead gasBuys100Sep 1, 2026–
Ensign Natural Resources II LLCCasinghead gasGathers100Sep 1, 2026–
Marathon Oil Ef LLCCasinghead gasGathers100Aug 9, 2022Sep 1, 2026
Marathon Oil Ef LLCCasinghead gasBuys100Aug 9, 2022Sep 1, 2026
Endeavor Crude, LLCOilGathers40Jan 1, 2024Sep 1, 2026
Enterprise Crude Oil LLCOilGathers20Aug 9, 2022Sep 1, 2026
Genesis Crude Oil, L.p.OilGathers20Jan 1, 2024Sep 1, 2026
Statewide Crude Inc.OilGathers20Jan 1, 2024Sep 1, 2026

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

Who buys my oilOil price check

658.72 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 Bilsky-Chumchal Sa1
API numberWell no.Acreson the permit
42-177-345001H658.72

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 BILSKY-CHUMCHAL SA1
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20269029141,5591,2797$80.46$2.89
Jun 20268608591,6041,33011$84.81$3.15
May 20269269591,15196012$102.13$2.94
Apr 20261,5551,5281,5421,27912$100.32$2.77
Mar 20261,4811,4672,0411,79116$91.38$3.04
Feb 20261,0781,1181,5871,39213$64.51$3.62
Jan 20261,8421,9372,4472,02236$60.04$7.72
Dec 20252,5392,5323,7202,83124$57.97$4.26
Nov 20253,0463,0294,9204,02781$60.06$3.79
Oct 20252,8252,7665,6244,655104$60.89$3.19
Sep 20251,7461,7285,2384,415120$63.96$2.97
Aug 20252,0312,0426,0625,11894$64.86$2.91
Jul 20252,2812,2847,0796,03343$68.39$3.20
Jun 20252,1382,1287,3416,32215$68.17$3.02
May 20251,8041,8124,6853,97314$62.17$3.12
Apr 20252,2182,2233,5943,05184$63.54$3.42
Mar 20252,4792,4643,8833,38318$68.24$4.12
Feb 20252,3622,3593,5483,1236$71.53$4.19
Jan 20252,6622,6834,2303,76213$75.74$4.13
Dec 20242,4792,5064,7814,20240$70.12$3.01
Nov 20242,6522,6315,0284,39338$69.95$2.12
Oct 20242,8082,7844,2653,78924$71.99$2.20
Sep 20243,4223,4014,0703,555132$70.24$2.28
Aug 20242,4622,4232,5762,29583$76.68$1.99
Jul 202448263676666$81.80$2.07
Jun 20242,6732,6632,4302,074109$79.77$2.54
May 20243,6373,6385,5304,659253$80.02$2.12
Apr 20243,4993,5275,1354,378185$85.35$1.60
Mar 20243,7983,7918,1657,151121$81.28$1.49
Feb 20243,9463,9377,7166,579287$77.25$1.72
Jan 20244,6184,5889,1528,045186$74.15$3.18
Dec 20234,7774,83110,3809,326106$71.90$2.52
Nov 20235,6915,57912,00010,907121$77.69$2.71
Oct 20234,5554,5985,8884,766284$85.64$2.98
Sep 20234,8174,8856,3835,232442$89.43$2.64
Aug 20239,4409,4849,3898,264307$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-1)CountyGonzales County

Marathon Oil Ef LLC in Gonzales County

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Eagleville (Eagle Ford-1) field

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