Skip to content
Royalty Clerk

Texas oil lease

Producing

CHARLOTTE B UNIT

Charlotte B Unit is an oil lease in Upton County, Texas, operated by Saxum Opco, LLC in the Spraberry (Trend Area) field.

1 well

6,620bbl oil, last 12 months−6% vs prior year
Operator
Saxum Opco, LLC
County
Upton County
Field
Spraberry (Trend Area)
RRC lease
7C-18508

Is your check right?

Check my statement

Where it sits

This county

Upton CountyUptonMidlandCraneGlasscockReaganEctorUpton County
Upton County
Gas, last 12 months
35,363 mcf
Oil in Jul 2026
517 bbl

Checks stopped on this lease?

  • Operator

    Operator changed: Saxum Opco, LLC took over from Zarvona Energy LLC in Oct 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 6% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 6% over the last 12 monthsMonthly oil production and gas for CHARLOTTE B UNIT, Aug 2023 to Jul 2026. Oil output fell 6% over the last 12 months. 6,620 bbl in the 12 months through Jul 2026, against 7,048 bbl in the 12 months before.Last 12 months: 6,620 bblbbl per monthmcf per month002502,5005005,0007507,5001,00010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 6% over the last 12 monthsMonthly oil production and gas for CHARLOTTE B UNIT, Aug 2023 to Jul 2026. Oil output fell 6% over the last 12 months. 6,620 bbl in the 12 months through Jul 2026, against 7,048 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002502,5005005,0007507,5001,00010kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

All of the gas went to a processing plant in the last 12 months

All of the gas went to a processing plant in the last 12 monthsShare of CHARLOTTE B UNIT gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a processing plant in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
All of the gas went to a processing plant in the last 12 monthsShare of CHARLOTTE B UNIT gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a processing plant 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.

Who has run this lease

The operator changed 2 times, most recently in Oct 2025

Operators of this lease over timeDiamondback E&P LLC, Jan 2020 to May 2021; Zarvona Energy LLC, Jun 2021 to Sep 2025; Saxum Opco, LLC, Oct 2025 to Jul 20262020202120222023202420252026Changed Jun 2021Changed Oct 2025Diamondback E&P LLCJan 2020 to May 2021Zarvona Energy LLCJun 2021 to Sep 2025Saxum Opco, LLCOct 2025 to now
Operators of this lease over timeDiamondback E&P LLC, Jan 2020 to May 2021; Zarvona Energy LLC, Jun 2021 to Sep 2025; Saxum Opco, LLC, Oct 2025 to Jul 20262020202120222023202420252026Changed Jun 2021Changed Oct 2025Diamondback E&P LLCJan 2020 to May 2021Zarvona Energy LLCJun 2021 to Sep 2025Saxum Opco, LLCOct 2025 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on CHARLOTTE B UNIT
API numberWell no.Status
42-461-389612HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Echo Canyon Energy Prd Sply, LLCOilGathers100Mar 18, 2026–
Targa Pl Mid-Cont Westtex LLCCasinghead gasBuys100Jun 1, 2021–
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers100Jun 1, 2021–
Mv Purchasing, LLCOilGathers100Jun 1, 2024Mar 18, 2026
Lpc Crude Iii, LLCOilGathers100Nov 1, 2021Jun 1, 2024
Eastex Crude CompanyOilGathers50Jun 1, 2021Nov 1, 2021
Shell Trading (Us) CompanyOilGathers50Jun 1, 2021Nov 1, 2021
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers50Nov 1, 2019Jun 1, 2021
Wtg Gas Processing, L.p.Casinghead gasGathers50Nov 1, 2019Jun 1, 2021

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

Who buys my oilOil price check

80 acres on the newest permit

  • Good to know

    A pooling certificate (P-12) was filed

    Your tract may share its production with neighbors in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one permit.

  • 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 Charlotte B Unit
API numberWell no.Acreson the permit
42-461-389612H80

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for CHARLOTTE B UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Saxum Opco,5174842,4702,4700$80.46$2.89
Jun 2026Saxum Opco,3905623,8763,8760$84.81$3.15
May 2026Saxum Opco,5804624,5384,5380$102.13$2.94
Apr 2026Saxum Opco,6496044,2194,2190$100.32$2.77
Mar 2026Saxum Opco,5375313,9443,9440$91.38$3.04
Feb 2026Saxum Opco,4534513,6333,6330$64.51$3.62
Jan 2026Saxum Opco,5225472,0712,0710$60.04$7.72
Dec 2025Saxum Opco,4434911,1531,1530$57.97$4.26
Nov 2025Saxum Opco,7547273,0793,0790$60.06$3.79
Oct 2025Saxum Opco,5834752,4552,4550$60.89$3.19
Sep 2025Zarvona Energy6096692,1112,1110$63.96$2.97
Aug 2025Zarvona Energy5835431,8141,8140$64.86$2.91
Jul 2025Zarvona Energy4585562,2342,2340$68.39$3.20
Jun 2025Zarvona Energy6686121,0441,0440$68.17$3.02
May 2025Zarvona Energy6656752,0542,0540$62.17$3.12
Apr 2025Zarvona Energy5565782,3682,3680$63.54$3.42
Mar 2025Zarvona Energy5714859,7229,7220$68.24$4.12
Feb 2025Zarvona Energy4704431,6181,6180$71.53$4.19
Jan 2025Zarvona Energy6658342,5282,5280$75.74$4.13
Dec 2024Zarvona Energy7056917267260$70.12$3.01
Nov 2024Zarvona Energy6044997767760$69.95$2.12
Oct 2024Zarvona Energy5116578798790$71.99$2.20
Sep 2024Zarvona Energy5955879469460$70.24$2.28
Aug 2024Zarvona Energy5805241,9361,9360$76.68$1.99
Jul 2024Zarvona Energy6045771,0861,0860$81.80$2.07
Jun 2024Zarvona Energy4965121,0531,0530$79.77$2.54
May 2024Zarvona Energy4825527757750$80.02$2.12
Apr 2024Zarvona Energy6865762582580$85.35$1.60
Mar 2024Zarvona Energy6327172632630$81.28$1.49
Feb 2024Zarvona Energy5795442502500$77.25$1.72
Jan 2024Zarvona Energy6725984114110$74.15$3.18
Dec 2023Zarvona Energy6166451,4801,4800$71.90$2.52
Nov 2023Zarvona Energy5855818438430$77.69$2.71
Oct 2023Zarvona Energy8118968268260$85.64$2.98
Sep 2023Zarvona Energy6546756716710$89.43$2.64
Aug 2023Zarvona Energy7957345445440$81.39$2.58

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

OperatorSaxum Opco, LLCFieldSpraberry (Trend Area)CountyUpton County

Saxum Opco, LLC in Upton County

All Saxum Opco, LLC leases →

Spraberry (Trend Area) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km