Skip to content
Royalty Clerk

Texas oil lease

Producing

BARNHART (EF)-HFS SA1

Barnhart (Ef)-HFS Sa1 is an oil lease in Gonzales County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

1 well

95,635bbl oil, since Sep 2025
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-13128

Is your check right?

Check my statement

Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Gas, since Sep 2025
49,149 mcf
Oil in Jul 2026
9,432 bbl

Checks stopped on this lease?

  • Buyer

    Buyer changed: ENSIGN NATURAL RESOURCES II LLC 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 63% since Sep 2025

  • Oil (bars)
  • Gas (line)
Oil output fell 63% since Sep 2025Monthly oil production and gas for BARNHART (EF)-HFS SA1, Sep 2025 to Jul 2026. Oil output fell 63% since Sep 2025. Monthly average of 5,421 bbl in the latest 3 months, against 14,714 bbl in the first 3.bbl per monthmcf per month005,0002,50010k5,00015k7,50020k10kOct 25Jan 26AprJul
Oil output fell 63% since Sep 2025Monthly oil production and gas for BARNHART (EF)-HFS SA1, Sep 2025 to Jul 2026. Oil output fell 63% since Sep 2025. Monthly average of 5,421 bbl in the latest 3 months, against 14,714 bbl in the first 3.bbl per monthmcf per month005,0002,50010k5,00015k7,50020k10kJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

85% of the gas went to a processing plant in the 11 months reported

Flaring peaked at 4.2% of the gas in May 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
85% of the gas went to a processing plant in the 11 months reportedShare of BARNHART (EF)-HFS SA1 gas by disposition code each month, Sep 2025 to Jul 2026. 85% of the gas went to a processing plant in the 11 months reported. Flaring peaked at 4.2% of the gas in May 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.2%Oct 25Jan 26AprJul
85% of the gas went to a processing plant in the 11 months reportedShare of BARNHART (EF)-HFS SA1 gas by disposition code each month, Sep 2025 to Jul 2026. 85% of the gas went to a processing plant in the 11 months reported. Flaring peaked at 4.2% of the gas in May 2026.Share of gas by disposition code0%50%100%Flared 4.2%Jan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    85% · 42,000 mcf

  • Lease fuel (1)

    12% · 5,890 mcf

  • Flared (4)

    2.6% · 1,259 mcf

2.6% of the gas flared in the 11 months reported. 4 months above 3%.

1 well on this lease

Wells on BARNHART (EF)-HFS SA1
API numberWell no.Status
42-177-34748126HActive

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–
Ensign Natural Resources II LLCCasinghead gasBuys100Sep 1, 2026–
Ensign Natural Resources II LLCCasinghead gasGathers100Sep 1, 2026–
Marathon Oil Ef LLCCasinghead gasGathers100Mar 22, 2025Sep 1, 2026
Marathon Oil Ef LLCCasinghead gasBuys100Mar 22, 2025Sep 1, 2026
Endeavor Crude, LLCOilGathers33Mar 22, 2025Sep 1, 2026
Enterprise Crude Oil LLCOilGathers34Mar 22, 2025Sep 1, 2026
Trafigura Trading LLCOilGathers33Mar 22, 2025Sep 1, 2026

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

Who buys my oilOil price check

7,129.80 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.

Check your decimal on this lease
Permits for Barnhart (Ef)-HFS Sa1
API numberWell no.Acreson the permit
42-177-34748126H7,129.80

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

11 months, newest first

Ledger for BARNHART (EF)-HFS SA1
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20269,4329,3244,0063,36276$80.46$2.89
Jun 20264,2654,2131,8361,53270$84.81$3.15
May 20262,5672,6361,01983843$102.13$2.94
Apr 20265,7995,6862,5702,15399$100.32$2.77
Mar 202629842579651$91.38$3.04
Feb 20268,2838,3434,0433,422111$64.51$3.62
Jan 202610,51810,4795,5124,633173$60.04$7.72
Dec 202510,33210,4305,9825,038137$57.97$4.26
Nov 202514,34914,4067,7866,667214$60.06$3.79
Oct 202517,19217,0329,7108,568159$60.89$3.19
Sep 202512,60012,4516,6065,722176$63.96$2.97

Flared above 3%

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

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

Marathon Oil Ef LLC in Gonzales County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-2) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km