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Texas oil lease

Producing

COBRA 10A

Cobra 10A is an oil lease in McMullen County, Texas, operated by Javelin Energy Partners Mgmt LLC in the Eagleville (Eagle Ford-1) field.

1 well

50,269bbl oil, last 12 months
Operator
Javelin Energy Partners Mgmt LLC
County
McMullen County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-21566

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Where it sits

This county

McMullen CountyMcMullenLa SalleAtascosaKarnesFrioLive OakMcMullen County
McMullen County
Gas, last 12 months
56,477 mcf
Oil in Jul 2026
3,430 bbl

Checks stopped on this lease?

  • Operator

    Operator changed: Javelin Energy Partners Mgmt LLC took over from Ridgemar Energy Operating, LLC in Feb 2025.

  • P-5

    The previous operator's P-5 registration is listed as delinquent (last P-5 filed Jun 3, 2025).

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 82% since Oct 2024

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 82% since Oct 2024Monthly oil production and gas for COBRA 10A, Oct 2024 to Jul 2026. Oil output fell 82% since Oct 2024. Monthly average of 3,148 bbl in the latest 3 months, against 17,822 bbl in the first 3.Last 12 months: 50,269 bblbbl per monthmcf per month005,0005,00010k10k15k15k20k20k25k25kOct 24Jan 25AprJulOctJan 26AprJul
Oil output fell 82% since Oct 2024Monthly oil production and gas for COBRA 10A, Oct 2024 to Jul 2026. Oil output fell 82% since Oct 2024. Monthly average of 3,148 bbl in the latest 3 months, against 17,822 bbl in the first 3.Last 12 monthsbbl per monthmcf per month005,0005,00010k10k15k15k20k20k25k25kJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

99% of the gas went to a transmission line in the last 12 months

Flaring peaked at 6.2% of the gas in May 2025.

  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
99% of the gas went to a transmission line in the last 12 monthsShare of COBRA 10A gas by disposition code each month, Oct 2024 to Jul 2026. 99% of the gas went to a transmission line in the last 12 months. Flaring peaked at 6.2% of the gas in May 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 6.2%Oct 24Jan 25AprJulOctJan 26AprJul
99% of the gas went to a transmission line in the last 12 monthsShare of COBRA 10A gas by disposition code each month, Oct 2024 to Jul 2026. 99% of the gas went to a transmission line in the last 12 months. Flaring peaked at 6.2% of the gas in May 2025.Share of gas by disposition code0%50%100%Flared 6.2%Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    99% · 55,817 mcf

  • Flared (4)

    1.2% · 660 mcf

1.2% of the gas flared in the last 12 months. 3 months above 3%.

Who has run this lease

The operator changed once, most recently in Feb 2025

Operators of this lease over timeRidgemar Energy Operating, LLC, Oct 2024 to Jan 2025; Javelin Energy Partners Mgmt LLC, Feb 2025 to Jul 202620252026Changed Feb 2025Ridgemar Energy Operating, LLCOct 2024 to Jan 2025Javelin Energy Partners Mgmt…Feb 2025 to now
Operators of this lease over timeRidgemar Energy Operating, LLC, Oct 2024 to Jan 2025; Javelin Energy Partners Mgmt LLC, Feb 2025 to Jul 202620252026Changed Feb 2025Ridgemar Energy Operating, LLCOct 2024 to Jan 2025Javelin Energy Partners Mgmt LLCFeb 2025 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on COBRA 10A
API numberWell no.Status
42-311-3750110HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Formula Midstream Partners LLCOilGathers100Oct 11, 2024
Energy Transfer CompanyCasinghead gasBuys100Oct 11, 2024
Energy Transfer CompanyCasinghead gasGathers100Oct 11, 2024

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

Who buys my oilOil price check

1,550 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 Cobra 10A
API numberWell no.Acreson the permit
42-311-3750110H1,550

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

Estimate your royalty

22 months, newest first

Ledger for COBRA 10A
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Javelin Energy3,4303,3873,9373,91027$80.46$2.89
Jun 2026Javelin Energy2,4012,4342,4932,47419$84.81$3.15
May 2026Javelin Energy3,6143,6085,8745,770104$102.13$2.94
Apr 2026Javelin Energy4,1624,1635,4695,283186$100.32$2.77
Mar 2026Javelin Energy2,8342,8112,2062,097109$91.38$3.04
Feb 2026Javelin Energy3,5363,6114,3774,36710$64.51$3.62
Jan 2026Javelin Energy4,0393,9613,0412,99942$60.04$7.72
Dec 2025Javelin Energy4,2714,2796,2846,147137$57.97$4.26
Nov 2025Javelin Energy4,6334,6494,6984,6980$60.06$3.79
Oct 2025Javelin Energy5,2025,2108,0157,99916$60.89$3.19
Sep 2025Javelin Energy5,4915,4805,1085,1080$63.96$2.97
Aug 2025Javelin Energy6,6566,7494,9754,96510$64.86$2.91
Jul 2025Javelin Energy6,1936,1086,3326,29141$68.39$3.20
Jun 2025Javelin Energy6,6636,8055,7975,76730$68.17$3.02
May 2025Javelin Energy7,2627,1145,6035,254349$62.17$3.12
Apr 2025Javelin Energy7,8727,9234,8624,82240$63.54$3.42
Mar 2025Javelin Energy11,09611,04110,38410,093180$68.24$4.12
Feb 2025Javelin Energy10,10010,1958,2908,002208$71.53$4.19
Jan 2025Ridgemar Energy16,71316,70112,48912,105281$75.74$4.13
Dec 2024Ridgemar Energy21,28521,29915,11114,712277$70.12$3.01
Nov 2024Ridgemar Energy21,16221,11113,41313,207105$69.95$2.12
Oct 2024Ridgemar Energy11,02010,8396,3426,04765$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

OperatorJavelin Energy Partners Mgmt LLCFieldEagleville (Eagle Ford-1)CountyMcMullen County

Javelin Energy Partners Mgmt LLC in McMullen County

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Eagleville (Eagle Ford-1) field

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