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Texas oil lease

Producing

CALVERLEY, 14-A

Calverley, 14-A is an oil lease in Glasscock County, Texas, operated by Diamondback E&P LLC in the Spraberry (Trend Area) field.

1 well

18bbl oil, last 12 months−71% vs prior year
RRC lease
08-52513

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Where it sits

This county

Glasscock CountyGlasscockMitchellMartinSterlingMidlandHowardGlasscock County
Glasscock County
Gas, last 12 months
1,483 mcf
Oil in Jul 2026
0 bbl

Checks stopped on this lease?

  • Operator

    Operator changed: Diamondback E&P LLC took over from De IV Operating, LLC in May 2025.

  • P-5

    The previous operator's P-5 registration is listed as inactive since Jan 29, 2026 (last P-5 filed Jan 7, 2025).

  • Sales

    No sales reported for the last 8 months of state data (through Jul 2026).

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

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Production by month

Oil output fell 71% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 71% over the last 12 monthsMonthly oil production and gas for CALVERLEY, 14-A, Aug 2023 to Jul 2026. Oil output fell 71% over the last 12 months. 18 bbl in the 12 months through Jul 2026, against 63 bbl in the 12 months before.Last 12 months: 18 bblbbl per monthmcf per month00350510081501020013250Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 71% over the last 12 monthsMonthly oil production and gas for CALVERLEY, 14-A, Aug 2023 to Jul 2026. Oil output fell 71% over the last 12 months. 18 bbl in the 12 months through Jul 2026, against 63 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month00350510081501020013250Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

All of the gas went to lease fuel in the last 12 months

All of the gas went to lease fuel in the last 12 monthsShare of CALVERLEY, 14-A gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to lease fuel 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 lease fuel in the last 12 monthsShare of CALVERLEY, 14-A gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to lease fuel 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 May 2025

Operators of this lease over timeFed Operating LLC, Jan 2020 to Oct 2022; De IV Operating, LLC, Nov 2022 to Apr 2025; Diamondback E&P LLC, May 2025 to Jul 20262020202120222023202420252026Changed Nov 2022Changed May 2025Fed Operating LLCJan 2020 to Oct 2022De IV Operating, LLCNov 2022 to Apr 2025Diamondback E&P LLCMay 2025 to now
Operators of this lease over timeFed Operating LLC, Jan 2020 to Oct 2022; De IV Operating, LLC, Nov 2022 to Apr 2025; Diamondback E&P LLC, May 2025 to Jul 20262020202120222023202420252026Changed Nov 2022Changed May 2025Fed Operating LLCJan 2020 to Oct 2022De IV Operating, LLCNov 2022 to Apr 2025Diamondback E&P LLCMay 2025 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on CALVERLEY, 14-A
API numberWell no.Status
42-173-373731Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Rio Energy International, Inc.OilGathers100Aug 1, 2025–
Dcp Operating Company, LPCasinghead gasGathers100Sep 1, 2019Aug 1, 2025
Dcp Operating Company, LPCasinghead gasBuys100Sep 1, 2019Aug 1, 2025
Bml, Inc. BOilGathers100Jun 1, 2022Aug 1, 2025
West Texas Crude Transport, LLCOilGathers100Jan 1, 2021Jun 1, 2022
Bml, Inc. BOilGathers100May 1, 2020Jan 1, 2021
Rio Energy International, Inc.OilGathers100Sep 1, 2019May 1, 2020

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

160 acres on the newest permit

Permits for Calverley, 14-A
API numberWell no.Acreson the permit
42-173-373731160

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

What Diamondback Energy, Inc. told investors it received

Diamondback E&P LLC is linked to Diamondback Energy, Inc. (FANG).
Realized prices reported by Diamondback Energy, Inc.
QuarterOil$ per bblFiling
Q2 2026$96.82SEC filing
Q1 2026$73.47SEC filing
Q4 2025$58.00SEC filing
Q3 2025$64.60SEC filing
Q2 2025$63.23SEC filing
Q1 2025$70.95SEC filing

SourceDiamondback Energy, Inc. quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for CALVERLEY, 14-A
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Diamondback E&P007000$80.46$2.89
Jun 2026Diamondback E&P0015000$84.81$3.15
May 2026Diamondback E&P0015500$102.13$2.94
Apr 2026Diamondback E&P0015000$100.32$2.77
Mar 2026Diamondback E&P0015500$91.38$3.04
Feb 2026Diamondback E&P0014000$64.51$3.62
Jan 2026Diamondback E&P1015500$60.04$7.72
Dec 2025Diamondback E&P0015500$57.97$4.26
Nov 2025Diamondback E&P711711500$60.06$3.79
Oct 2025Diamondback E&P005000$60.89$3.19
Sep 2025Diamondback E&P115800$63.96$2.97
Aug 2025Diamondback E&P9013000$64.86$2.91
Jul 2025Diamondback E&P1010500$68.39$3.20
Jun 2025Diamondback E&P2013500$68.17$3.02
May 2025Diamondback E&P82415500$62.17$3.12
Apr 2025De IV110000$63.54$3.42
Mar 2025De IV100000$68.24$4.12
Feb 2025De IV70000$71.53$4.19
Jan 2025De IV80000$75.74$4.13
Dec 2024De IV80000$70.12$3.01
Nov 2024De IV20000$69.95$2.12
Oct 2024De IV20000$71.99$2.20
Sep 2024De IV20000$70.24$2.28
Aug 2024De IV20000$76.68$1.99
Jul 2024De IV10000$81.80$2.07
Jun 2024De IV10000$79.77$2.54
May 2024De IV70000$80.02$2.12
Apr 2024De IV00000$85.35$1.60
Mar 2024De IV00000$81.28$1.49
Feb 2024De IV3169000$77.25$1.72
Jan 2024De IV00000$74.15$3.18
Dec 2023De IV20000$71.90$2.52
Nov 2023De IV10000$77.69$2.71
Oct 2023De IV00000$85.64$2.98
Sep 2023De IV20000$89.43$2.64
Aug 2023De IV20000$81.39$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

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Nearby

Spraberry (Trend Area) field

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