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Texas oil lease

Producing

COBRA 10B

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

1 well

36,773bbl oil, last 12 months
Operator
Javelin Energy Partners Mgmt LLC
County
McMullen County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-21567

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Where it sits

This county

McMullen CountyMcMullenLA SalleAtascosaKarnesFrioLive OakMcMullen County
McMullen County
Gas, last 12 months
60,791 mcf
Oil in Jul 2026
3,100 bbl

Production by month

Oil output fell 85% since Oct 2024

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 85% since Oct 2024Monthly oil production and gas for COBRA 10B, Oct 2024 to Jul 2026. Oil output fell 85% since Oct 2024. Monthly average of 2,653 bbl in the latest 3 months, against 17,695 bbl in the first 3.Last 12 months: 36,773 bblbbl per monthmcf per month005,0005,00010k10k15k15k20k20k25k25kOct 24Jan 25AprJulOctJan 26AprJul
Oil output fell 85% since Oct 2024Monthly oil production and gas for COBRA 10B, Oct 2024 to Jul 2026. Oil output fell 85% since Oct 2024. Monthly average of 2,653 bbl in the latest 3 months, against 17,695 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 10B 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 10B 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% · 60,017 mcf

  • Flared (4)

    1.3% · 774 mcf

1.3% 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 10B
API numberWell no.Status
42-311-3750211HActive

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

1,350 acres on the newest permit

An allocation well is on this lease

Permits for Cobra 10B
API numberWell no.Acreson the permit
42-311-3750211H1,350

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

Unit decimal checker

Estimate your royalty

22 months, newest first

Ledger for COBRA 10B
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Javelin Energy3,1003,0704,0794,05128$80.46$2.89
Jun 2026Javelin Energy2,3642,3543,6753,64827$84.81$3.15
May 2026Javelin Energy2,4952,5035,8315,728103$102.13$2.94
Apr 2026Javelin Energy3,2293,2706,2776,064213$100.32$2.77
Mar 2026Javelin Energy3,0092,9493,0742,922152$91.38$3.04
Feb 2026Javelin Energy2,7022,6914,3704,36010$64.51$3.62
Jan 2026Javelin Energy1,6611,6715,5755,49877$60.04$7.72
Dec 2025Javelin Energy3,3133,3156,3996,259140$57.97$4.26
Nov 2025Javelin Energy3,4453,4727,0187,0180$60.06$3.79
Oct 2025Javelin Energy4,4204,3836,6296,61514$60.89$3.19
Sep 2025Javelin Energy3,0463,0463,0683,0680$63.96$2.97
Aug 2025Javelin Energy3,9894,0244,7964,78610$64.86$2.91
Jul 2025Javelin Energy3,1373,1446,1056,06639$68.39$3.20
Jun 2025Javelin Energy5,7125,9238,2658,22243$68.17$3.02
May 2025Javelin Energy8,4598,27910,3509,706644$62.17$3.12
Apr 2025Javelin Energy8,7568,77811,23411,14391$63.54$3.42
Mar 2025Javelin Energy10,28410,28610,2129,925177$68.24$4.12
Feb 2025Javelin Energy13,37413,43110,43310,070262$71.53$4.19
Jan 2025Ridgemar Energy17,18417,16715,27514,806343$75.74$4.13
Dec 2024Ridgemar Energy21,39121,42017,35016,892318$70.12$3.01
Nov 2024Ridgemar Energy22,59722,49915,44515,207121$69.95$2.12
Oct 2024Ridgemar Energy9,0988,9485,6635,40058$71.99$2.20

Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 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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