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Texas oil lease

Producing

BIG BERTHA 0310 C

Big Bertha 0310 C is an oil lease in Upton County, Texas, operated by Firebird Energy II LLC in the Spraberry (Trend Area) field.

2 wells

129,734bbl oil, last 12 months
Operator
Firebird Energy II LLC
County
Upton County
Field
Spraberry (Trend Area)
RRC lease
7C-22959

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Where it sits

This county

Upton CountyUptonMidlandCraneGlasscockReaganEctorUpton County
Upton County
Gas, last 12 months
245,437 mcf
Oil in Jul 2026
11,967 bbl

Production by month

Oil output fell 66% since Mar 2025

  • Oil (bars)
  • Gas (line)
Oil output fell 66% since Mar 2025Monthly oil production and gas for BIG BERTHA 0310 C, Mar 2025 to Jul 2026. Oil output fell 66% since Mar 2025. Monthly average of 13,853 bbl in the latest 3 months, against 40,901 bbl in the first 3.bbl per monthmcf per month0020k20k40k40k60k60k80k80kApr 25JulOctJan 26AprJul
Oil output fell 66% since Mar 2025Monthly oil production and gas for BIG BERTHA 0310 C, Mar 2025 to Jul 2026. Oil output fell 66% since Mar 2025. Monthly average of 13,853 bbl in the latest 3 months, against 40,901 bbl in the first 3.bbl per monthmcf per month0020k20k40k40k60k60k80k80kJul 25Jan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

97% of the gas went to a transmission line in the last 12 months

Flaring peaked at 17.3% of the gas in Mar 2025.

  • Processing plant (3)
  • Transmission line (2)
  • Flared (4)
97% of the gas went to a transmission line in the last 12 monthsShare of BIG BERTHA 0310 C gas by disposition code each month, Mar 2025 to Jul 2026. 97% of the gas went to a transmission line in the last 12 months. Flaring peaked at 17.3% of the gas in Mar 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 17.3%Apr 25JulOctJan 26AprJul
97% of the gas went to a transmission line in the last 12 monthsShare of BIG BERTHA 0310 C gas by disposition code each month, Mar 2025 to Jul 2026. 97% of the gas went to a transmission line in the last 12 months. Flaring peaked at 17.3% of the gas in Mar 2025.Share of gas by disposition code0%50%100%Flared 17.3%Jul 25Jan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    97% · 293,300 mcf

  • Flared (4)

    3.1% · 9,322 mcf

3.1% of the gas flared in the last 12 months. 8 months above 3%.

2 wells on this lease

Wells on BIG BERTHA 0310 C
API numberWell no.Status
42-461-42861303HActive
42-461-42862503HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Plains Marketing, L.p.OilGathers100Sep 8, 2024
Energy Transfer CompanyCasinghead gasBuys100Sep 8, 2024
Energy Transfer CompanyCasinghead gasGathers100Sep 8, 2024

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

Who buys my oilOil price check

1,150.50 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.

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Permits for Big Bertha 0310 C
API numberWell no.Acreson the permit
42-461-42862503H1,150.50
42-461-42861303H1,150.50

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

Unit decimal checker

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17 months, newest first

Ledger for BIG BERTHA 0310 C
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202611,96711,95031,49430,3281,166$80.46$2.89
Jun 202612,87112,89428,14727,319828$84.81$3.15
May 202616,72116,74830,80230,382420$102.13$2.94
Apr 202612,26212,17412,87612,637239$100.32$2.77
Mar 202610,37010,3237,8297,8209$91.38$3.04
Feb 20263,1493,0863,7433,72617$64.51$3.62
Jan 20261,1481,1481,4661,4624$60.04$7.72
Dec 202500000$57.97$4.26
Nov 20257529861,8231,80221$60.06$3.79
Oct 202517,42117,46238,36637,898468$60.89$3.19
Sep 202519,03319,18837,34236,0341,308$63.96$2.97
Aug 202524,04024,08351,54949,1842,365$64.86$2.91
Jul 202529,07029,08557,18554,7082,477$68.39$3.20
Jun 202533,66233,80560,90155,6175,284$68.17$3.02
May 202549,33049,41771,88368,3443,539$62.17$3.12
Apr 202559,16358,91877,03072,9144,116$63.54$3.42
Mar 202514,21013,73715,62212,9162,706$68.24$4.12

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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This lease belongs to

OperatorFirebird Energy II LLCFieldSpraberry (Trend Area)CountyUpton County

Firebird Energy II LLC in Upton County

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Spraberry (Trend Area) field

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