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Texas oil lease

Producing

MUMFORD EF

Mumford Ef is an oil lease in Robertson County, Texas, operated by Wildfire Energy Operating LLC in the Giddings (Eagleford) field.

1 well

13,455bbl oil, last 12 months−18% vs prior year
Operator
Wildfire Energy Operating LLC
County
Robertson County
Field
Giddings (Eagleford)
RRC lease
03-27457

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Where it sits

This county

Robertson CountyRobertsonFallsLimestoneMadisonMcLennanLeonBrazosMilamRobertson County
Robertson County
Gas, last 12 months
6,659 mcf
Oil in Jun 2026
1,069 bbl

Production by month

Oil output fell 18% over the last 12 months

Jul 2026 was not reported.

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 18% over the last 12 monthsMonthly oil production and gas for MUMFORD EF, Aug 2023 to Jul 2026. Oil output fell 18% over the last 12 months. 12,215 bbl in the 12 months through Jul 2026, against 14,985 bbl in the 12 months before.Last 12 months: 12,215 bblbbl per monthmcf per month005005001,0001,0001,5001,5002,0002,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 18% over the last 12 monthsMonthly oil production and gas for MUMFORD EF, Aug 2023 to Jul 2026. Oil output fell 18% over the last 12 months. 12,215 bbl in the 12 months through Jul 2026, against 14,985 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005005001,0001,0001,5001,5002,0002,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

91% of the gas went to a transmission line in the last 12 months

  • Transmission line (2)
  • Lease fuel (1)
91% of the gas went to a transmission line in the last 12 monthsShare of MUMFORD EF gas by disposition code each month, Aug 2023 to Jul 2026. 91% of the gas went to a transmission line in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
91% of the gas went to a transmission line in the last 12 monthsShare of MUMFORD EF gas by disposition code each month, Aug 2023 to Jul 2026. 91% of the gas went to a transmission line in the last 12 months.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    91% · 6,059 mcf

  • Lease fuel (1)

    9.0% · 600 mcf

Who has run this lease

The operator changed once, most recently in Mar 2023

Operators of this lease over timeChesapeake Operating, L.L.C., Jan 2020 to Feb 2023; Wildfire Energy Operating LLC, Mar 2023 to Jun 20262020202120222023202420252026Changed Mar 2023Chesapeake Operating, L.L.C.Jan 2020 to Feb 2023Wildfire Energy Operating LLCMar 2023 to now
Operators of this lease over timeChesapeake Operating, L.L.C., Jan 2020 to Feb 2023; Wildfire Energy Operating LLC, Mar 2023 to Jun 20262020202120222023202420252026Changed Mar 2023Chesapeake Operating, L.L.C.Jan 2020 to Feb 2023Wildfire Energy Operating LLCMar 2023 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on MUMFORD EF
API numberWell no.Status
42-395-320221HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Energy Trans Crude Marketing LLCOilGathers51May 30, 2023–
Shell Trading (Us) CompanyOilGathers49May 30, 2023–
Energy Transfer CompanyCasinghead gasBuys100Sep 25, 2018–
Energy Transfer CompanyCasinghead gasGathers100Sep 25, 2018–
Chesapeake Energy Mktg, L.l.c.OilGathers10Mar 1, 2021May 30, 2023
Energy Trans Crude Marketing LLCOilGathers90Jul 1, 2021May 30, 2023
Sunoco Ptnrs. Mktg.&terminals LPOilGathers90Mar 1, 2021Jul 1, 2021
Sunoco Ptnrs. Mktg.&terminals LPOilGathers33Sep 25, 2018Mar 1, 2021
Trimac Transportation Inc.OilGathers33Sep 25, 2018Mar 1, 2021
Utah Trade Star, LLCOilGathers34Sep 25, 2018Mar 1, 2021

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

Who buys my oilOil price check

630.10 acres on the newest permit

Check your decimal on this lease
Permits for Mumford Ef
API numberWell no.Acreson the permit
42-395-320221H630.10

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for MUMFORD EF
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026No report–––––$80.46$2.89
Jun 2026Wildfire Energy1,0691,0473202910$84.81$3.15
May 2026Wildfire Energy9488755905370$102.13$2.94
Apr 2026Wildfire Energy1,1011,0743993630$100.32$2.77
Mar 2026Wildfire Energy1,1061,0773963600$91.38$3.04
Feb 2026Wildfire Energy1,0391,0914524110$64.51$3.62
Jan 2026Wildfire Energy1,1601,0965254780$60.04$7.72
Dec 2025Wildfire Energy1,1771,2555775250$57.97$4.26
Nov 2025Wildfire Energy1,1371,0776305730$60.06$3.79
Oct 2025Wildfire Energy1,2121,2795775250$60.89$3.19
Sep 2025Wildfire Energy1,1581,0387496820$63.96$2.97
Aug 2025Wildfire Energy1,1081,2586606010$64.86$2.91
Jul 2025Wildfire Energy1,2401,2557847130$68.39$3.20
Jun 2025Wildfire Energy1,1891,0697446770$68.17$3.02
May 2025Wildfire Energy1,0671,2187366700$62.17$3.12
Apr 2025Wildfire Energy1,2351,0848127390$63.54$3.42
Mar 2025Wildfire Energy1,2511,2657526930$68.24$4.12
Feb 2025Wildfire Energy9261,0146335820$71.53$4.19
Jan 2025Wildfire Energy1,4401,4381,0941,0030$75.74$4.13
Dec 2024Wildfire Energy1,3561,4391,4121,3090$70.12$3.01
Nov 2024Wildfire Energy1,2661,0751,1061,0260$69.95$2.12
Oct 2024Wildfire Energy1,3341,4101,4191,3120$71.99$2.20
Sep 2024Wildfire Energy1,2951,4171,1481,0570$70.24$2.28
Aug 2024Wildfire Energy1,3861,3971,4251,3250$76.68$1.99
Jul 2024Wildfire Energy1,1981,2301,1821,1000$81.80$2.07
Jun 2024Wildfire Energy1,5381,6108948330$79.77$2.54
May 2024Wildfire Energy1,3861,2329779170$80.02$2.12
Apr 2024Wildfire Energy1,3791,4357857450$85.35$1.60
Mar 2024Wildfire Energy1,4621,424000$81.28$1.49
Feb 2024Wildfire Energy1,4091,435000$77.25$1.72
Jan 2024Wildfire Energy1,5061,426000$74.15$3.18
Dec 2023Wildfire Energy1,5581,460000$71.90$2.52
Nov 2023Wildfire Energy1,4921,4562732550$77.69$2.71
Oct 2023Wildfire Energy1,5661,6421,3411,2430$85.64$2.98
Sep 2023Wildfire Energy1,5171,6101,0019250$89.43$2.64
Aug 2023Wildfire Energy1,6061,4371,0109320$81.39$2.58

No report filed

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

OperatorWildfire Energy Operating LLCFieldGiddings (Eagleford)CountyRobertson County

Wildfire Energy Operating LLC in Robertson County

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Giddings (Eagleford) field

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