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UL BIGHORN K 21-30-19

Ul Bighorn K 21-30-19 is an oil lease in Winkler County, Texas, operated by Apache Corporation in the Phantom (Wolfcamp) field.

1 well

17,751bbl oil, last 12 months−60% vs prior year
Operator
Apache Corporation
County
Winkler County
Field
Phantom (Wolfcamp)
RRC lease
08-53665

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Where it sits

This county

Winkler CountyWinklerAndrewsWardLovingEctorWinkler County
Winkler County
Gas, last 12 months
20,603 mcf
Oil in Jul 2026
0 bbl

Checks stopped on this lease?

  • Sales

    No sales reported for the last 3 months of state data (through Jul 2026).

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 60% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 60% over the last 12 monthsMonthly oil production and gas for UL BIGHORN K 21-30-19, Aug 2023 to Jul 2026. Oil output fell 60% over the last 12 months. 17,751 bbl in the 12 months through Jul 2026, against 44,930 bbl in the 12 months before.Last 12 months: 17,751 bblbbl per monthmcf per month002,0002,0004,0004,0006,0006,0008,0008,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 60% over the last 12 monthsMonthly oil production and gas for UL BIGHORN K 21-30-19, Aug 2023 to Jul 2026. Oil output fell 60% over the last 12 months. 17,751 bbl in the 12 months through Jul 2026, against 44,930 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,0002,0004,0004,0006,0006,0008,0008,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plant

Flaring peaked at 14.7% of the gas in May 2025.

  • Processing plant (3)
  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plantShare of UL BIGHORN K 21-30-19 gas by disposition code each month, Aug 2023 to Jul 2026. Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plant. Flaring peaked at 14.7% of the gas in May 2025.Share of the lease’s gas by disposition code, per month0%50%100%Aug 2024: plant to lineFlared 14.7%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plantShare of UL BIGHORN K 21-30-19 gas by disposition code each month, Aug 2023 to Jul 2026. Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plant. Flaring peaked at 14.7% of the gas in May 2025.Share of gas by disposition code0%50%100%Aug 24: plant to lineFlared 14.7%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    94% · 31,219 mcf

  • Flared (4)

    4.7% · 1,556 mcf

  • Lease fuel (1)

    1.3% · 417 mcf

4.7% of the gas flared in the last 12 months. 6 months above 3%.

Who has run this lease

The operator changed 3 times, most recently in Aug 2024

Operators of this lease over timeOasis Petroleum Permian LLC, Mar 2020 to Feb 2021; Percussion Petroleum Oper Ii,llc, Mar 2021 to Jul 2023; Callon Permian II, LLC, Aug 2023 to Jul 2024; Apache Corporation, Aug 2024 to Jul 2026202120222023202420252026Changed Mar 2021Changed Aug 2023Changed Aug 2024Oasis Petroleum Permian LLCMar 2020 to Feb 2021Percussion Petroleum Oper Ii,…Mar 2021 to Jul 2023Callon Permian II, LLCAug 2023 to Jul 2024Apache CorporationAug 2024 to now
Operators of this lease over timeOasis Petroleum Permian LLC, Mar 2020 to Feb 2021; Percussion Petroleum Oper Ii,llc, Mar 2021 to Jul 2023; Callon Permian II, LLC, Aug 2023 to Jul 2024; Apache Corporation, Aug 2024 to Jul 2026202120222023202420252026Changed Mar 2021Changed Aug 2023Changed Aug 2024Oasis Petroleum Permian LLCMar 2020 to Feb 2021Percussion Petroleum Oper Ii,llcMar 2021 to Jul 2023Callon Permian II, LLCAug 2023 to Jul 2024Apache CorporationAug 2024 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on UL BIGHORN K 21-30-19
API numberWell no.Status
42-495-343064211HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Energy Transfer CompanyOilGathers100Aug 14, 2024–
Targa Delaware LLCCasinghead gasBuys100Aug 20, 2019–
Targa Delaware LLCCasinghead gasGathers100Aug 20, 2019–
Panther Devco LLCOilGathers100Aug 20, 2019Aug 14, 2024

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

Who buys my oilOil price check

1,281.40 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.

  • 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 Ul Bighorn K 21-30-19
API numberWell no.Acreson the permit
42-495-343064211H1,281.40

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

Unit decimal checker

What APA Corporation told investors it received

Apache Corporation is linked to APA Corporation (APA).
Realized prices reported by APA Corporation
QuarterOil$ per bblFiling
Q2 2026$98.24SEC filing
Q1 2026$78.69SEC filing
Q4 2025$61.03SEC filing
Q3 2025$67.43SEC filing
Q2 2025$65.58SEC filing
Q1 2025$73.73SEC filing

SourceAPA Corporation quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for UL BIGHORN K 21-30-19
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Apache Corporation00000$80.46$2.89
Jun 2026Apache Corporation00000$84.81$3.15
May 2026Apache Corporation00000$102.13$2.94
Apr 2026Apache Corporation028000$100.32$2.77
Mar 2026Apache Corporation65475772171110$91.38$3.04
Feb 2026Apache Corporation2,2822,2612,5982,45870$64.51$3.62
Jan 2026Apache Corporation2,2272,2172,7372,60352$60.04$7.72
Dec 2025Apache Corporation3,0353,0323,1972,878226$57.97$4.26
Nov 2025Apache Corporation2,6802,7212,6712,449126$60.06$3.79
Oct 2025Apache Corporation2,3512,3433,3153,14693$60.89$3.19
Sep 2025Apache Corporation2,2172,2042,7932,681112$63.96$2.97
Aug 2025Apache Corporation2,3052,3642,5712,54229$64.86$2.91
Jul 2025Apache Corporation2,6862,6802,5532,49360$68.39$3.20
Jun 2025Apache Corporation3,2923,3052,9572,88770$68.17$3.02
May 2025Apache Corporation3,6723,6953,7253,176549$62.17$3.12
Apr 2025Apache Corporation3,5573,5793,3543,195159$63.54$3.42
Mar 2025Apache Corporation4,1864,1592,7042,7031$68.24$4.12
Feb 2025Apache Corporation3,5883,5342,8862,7573$71.53$4.19
Jan 2025Apache Corporation3,2643,2874,5324,4152$75.74$4.13
Dec 2024Apache Corporation3,9433,8974,7814,6630$70.12$3.01
Nov 2024Apache Corporation3,5083,5124,3374,2280$69.95$2.12
Oct 2024Apache Corporation4,1604,2405,1625,0460$71.99$2.20
Sep 2024Apache Corporation3,3693,6213,5503,5460$70.24$2.28
Aug 2024Apache Corporation5,7055,8506,1415,860276$76.68$1.99
Jul 2024Callon Permian4,3994,1184,6844,66618$81.80$2.07
Jun 2024Callon Permian5,3405,3346,2966,178118$79.77$2.54
May 2024Callon Permian5,9845,7317,4797,38099$80.02$2.12
Apr 2024Callon Permian1,0081,0641,1721,15715$85.35$1.60
Mar 2024Callon Permian2,1452,2532,6242,6231$81.28$1.49
Feb 2024Callon Permian3,3833,3443,8963,88511$77.25$1.72
Jan 2024Callon Permian2,9792,9753,7453,7387$74.15$3.18
Dec 2023Callon Permian5,0395,0714,6914,6910$71.90$2.52
Nov 2023Callon Permian5,9125,9274,8074,7998$77.69$2.71
Oct 2023Callon Permian5,3045,2664,5244,5240$85.64$2.98
Sep 2023Callon Permian4,4014,4655,6935,6930$89.43$2.64
Aug 2023Callon Permian5,4165,3817,0307,0300$81.39$2.58

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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Nearby

This lease belongs to

OperatorApache CorporationFieldPhantom (Wolfcamp)CountyWinkler County

Apache Corporation in Winkler County

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