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Texas oil lease

Producing

UL MILL 3427-21

Ul Mill 3427-21 is an oil lease in Winkler County, Texas, operated by WPX Energy Permian, LLC in the Phantom (Wolfcamp) field.

10 wells

247,130bbl oil, last 12 months−17% vs prior year
Operator
WPX Energy Permian, LLC
County
Winkler County
Field
Phantom (Wolfcamp)
RRC lease
08-51872

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Where it sits

This county

Winkler CountyWinklerAndrewsWardLovingEctorWinkler County
Winkler County
Gas, last 12 months
351,132 mcf
Oil in Jul 2026
14,595 bbl

Checks stopped on this lease?

  • Buyer

    Buyer changed: CARDINAL DELAWARE BASIN, LLC, DELAWARE BASIN MIDSTREAM LLC, ETC TEXAS P/L, LTD and 2 more replaced TARGA DELAWARE LLC as the buyer of this lease's gas from oil wells on Jul 21, 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 17% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 17% over the last 12 monthsMonthly oil production and gas for UL MILL 3427-21, Aug 2023 to Jul 2026. Oil output fell 17% over the last 12 months. 247,130 bbl in the 12 months through Jul 2026, against 296,698 bbl in the 12 months before.Last 12 months: 247,130 bblbbl per monthmcf per month0010k10k20k20k30k30k40k40k50k50kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 17% over the last 12 monthsMonthly oil production and gas for UL MILL 3427-21, Aug 2023 to Jul 2026. Oil output fell 17% over the last 12 months. 247,130 bbl in the 12 months through Jul 2026, against 296,698 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0010k10k20k20k30k30k40k40k50k50kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Over 99% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Flared (4)
Over 99% of the gas went to a processing plant in the last 12 monthsShare of UL MILL 3427-21 gas by disposition code each month, Aug 2023 to Jul 2026. Over 99% 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
Over 99% of the gas went to a processing plant in the last 12 monthsShare of UL MILL 3427-21 gas by disposition code each month, Aug 2023 to Jul 2026. Over 99% 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.

  • Processing plant (3)

    100% · 349,457 mcf

  • Flared (4)

    0.5% · 1,675 mcf

0.5% of the gas flared in the last 12 months. No month above 3%.

Who has run this lease

The operator changed once, most recently in May 2020

Operators of this lease over timeFelix Energy Holdings II, LLC, Jan 2020 to Apr 2020; WPX Energy Permian, LLC, May 2020 to Jul 20262020202120222023202420252026Changed May 2020Felix Energy Holdings II, LLCJan 2020 to Apr 2020WPX Energy Permian, LLCMay 2020 to now
Operators of this lease over timeFelix Energy Holdings II, LLC, Jan 2020 to Apr 2020; WPX Energy Permian, LLC, May 2020 to Jul 20262020202120222023202420252026Changed May 2020Felix Energy Holdings II, LLCJan 2020 to Apr 2020WPX Energy Permian, LLCMay 2020 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

10 wells on this lease

Wells on UL MILL 3427-21
API numberWell no.Status
42-495-337341HActive
42-495-339372HActive
42-495-339383HShut-in
42-495-340763HRActive
42-495-345085HShut-in
42-495-345098HShut-in
42-495-345104HShut-in
42-495-345116HShut-in
42-495-345127HShut-in
42-495-345139HShut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Stateline Crude, LLCOilGathers60Jul 21, 2025–
Concord Crude Oil Marketing LLCOilGathers10Jul 21, 2025–
Ngl Crude Assets and Mktg, LLCOilGathers10Jul 21, 2025–
Plains Pipeline L.p.OilGathers10Jul 21, 2025–
Enterprise Crude Oil LLCOilGathers5Jul 21, 2025–
Shell Trading (Us) CompanyOilGathers5Jul 21, 2025–
Stateline Processing, LLCCasinghead gasBuys80Jul 21, 2025–
Cardinal Delaware Basin, LLCCasinghead gasBuys5Jul 21, 2025–
Delaware Basin Midstream LLCCasinghead gasBuys5Jul 21, 2025–
Etc Texas P/L, LTDCasinghead gasBuys5Jul 21, 2025–
Markwest Energy W TX Gas Co, LLCCasinghead gasBuys5Jul 21, 2025–
Stateline Gathering, LLCCasinghead gasGathers100Jul 21, 2025–
Targa Delaware LLCCasinghead gasGathers100Aug 29, 2018Jul 21, 2025
Targa Delaware LLCCasinghead gasBuys100Aug 29, 2018Jul 21, 2025
Plains Marketing, L.p.OilGathers5Feb 1, 2020Jul 21, 2025
Plains Pipeline L.p.OilGathers90Feb 1, 2020Jul 21, 2025
Rocky Mountain Crude Oil LLCOilGathers5Feb 1, 2020Jul 21, 2025
Concord Crude Oil Marketing LLCOilGathers1Aug 29, 2018Feb 1, 2020

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

Who buys my oilOil price check

640.55 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 640.55 and 640.58 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    10 wells are listed on this lease

    Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

  • 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 Mill 3427-21
API numberWell no.Acreson the permit
42-495-345139H640.55
42-495-345085H640.55
42-495-345098H640.55
42-495-345104H640.55
42-495-345116H640.55
42-495-345127H640.55
42-495-340763HR640.58
42-495-339372H640.58
42-495-339383H640.58
42-495-337341H640.58

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

Unit decimal checker

What Devon Energy Corporation told investors it received

WPX Energy Permian, LLC is linked to Devon Energy Corporation (DVN).
Realized prices reported by Devon Energy Corporation
QuarterOil$ per bblFiling
Q2 2026$95.10SEC filing
Q1 2026$69.66SEC filing
Q4 2025$57.19SEC filing
Q3 2025$63.21SEC filing
Q2 2025$61.70SEC filing
Q1 2025$69.13SEC filing

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

Estimate your royalty

36 months, newest first

Ledger for UL MILL 3427-21
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026WPX Energy14,59514,14924,45724,4570$80.46$2.89
Jun 2026WPX Energy14,45414,07026,36526,3650$84.81$3.15
May 2026WPX Energy23,98523,90835,07135,05021$102.13$2.94
Apr 2026WPX Energy20,69422,65833,67133,6683$100.32$2.77
Mar 2026WPX Energy22,62923,79731,80831,8080$91.38$3.04
Feb 2026WPX Energy21,26118,28722,25321,622631$64.51$3.62
Jan 2026WPX Energy19,48819,43019,72719,68443$60.04$7.72
Dec 2025WPX Energy24,61325,03733,12932,877252$57.97$4.26
Nov 2025WPX Energy20,37920,31527,34326,743600$60.06$3.79
Oct 2025WPX Energy20,42520,40431,96231,9620$60.89$3.19
Sep 2025WPX Energy22,49723,00932,67132,61754$63.96$2.97
Aug 2025WPX Energy22,11021,86632,67532,60471$64.86$2.91
Jul 2025WPX Energy21,29721,08926,76826,512256$68.39$3.20
Jun 2025WPX Energy19,74819,90931,79731,75047$68.17$3.02
May 2025WPX Energy23,18423,03535,85235,8520$62.17$3.12
Apr 2025WPX Energy21,79122,12234,59034,5819$63.54$3.42
Mar 2025WPX Energy25,75826,07036,25536,2478$68.24$4.12
Feb 2025WPX Energy24,00424,28736,05036,0500$71.53$4.19
Jan 2025WPX Energy26,92826,09439,07539,0750$75.74$4.13
Dec 2024WPX Energy21,56021,66833,97733,9770$70.12$3.01
Nov 2024WPX Energy26,30226,53242,30042,3000$69.95$2.12
Oct 2024WPX Energy33,95133,73846,34746,3470$71.99$2.20
Sep 2024WPX Energy20,76820,66025,58425,57410$70.24$2.28
Aug 2024WPX Energy31,40731,94643,19843,1980$76.68$1.99
Jul 2024WPX Energy32,92932,20941,84341,83013$81.80$2.07
Jun 2024WPX Energy25,48125,75533,38333,32261$79.77$2.54
May 2024WPX Energy25,90325,85832,13332,1330$80.02$2.12
Apr 2024WPX Energy28,32628,20834,44934,248201$85.35$1.60
Mar 2024WPX Energy27,51627,62936,31436,3095$81.28$1.49
Feb 2024WPX Energy28,94828,72534,89934,8927$77.25$1.72
Jan 2024WPX Energy30,85430,71236,51836,5117$74.15$3.18
Dec 2023WPX Energy30,74231,07136,91036,9100$71.90$2.52
Nov 2023WPX Energy23,15823,32425,10024,792308$77.69$2.71
Oct 2023WPX Energy27,13027,24732,29832,24454$85.64$2.98
Sep 2023WPX Energy28,49027,88737,62237,6166$89.43$2.64
Aug 2023WPX Energy33,56333,87346,88346,85429$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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This lease belongs to

OperatorWPX Energy Permian, LLCFieldPhantom (Wolfcamp)CountyWinkler County

WPX Energy Permian, LLC in Winkler County

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