Skip to content
Royalty Clerk

Texas oil lease

Producing

TUMLINSON-COFFIELD UNIT #1

Tumlinson-Coffield Unit #1 is an oil lease in Dimmit County, Texas, operated by McDay Energy Corp. in the Blakeway (Dixon Sand) field.

1 well

39bbl oil, last 12 months−63% vs prior year
Operator
McDay Energy Corp.
County
Dimmit County
Field
Blakeway (Dixon Sand)
RRC lease
01-10606

Is your check right?

Check my statement

Where it sits

This county

Dimmit CountyDimmitLa SalleZavalaFrioMaverickDimmit County
Dimmit County
Gas, last 12 months
147 mcf
Oil in Jul 2026
2 bbl

Checks stopped on this lease?

  • Sales

    No sales reported for the last 12 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 63% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 63% over the last 12 monthsMonthly oil production and gas for TUMLINSON-COFFIELD UNIT #1, Aug 2023 to Jul 2026. Oil output fell 63% over the last 12 months. 39 bbl in the 12 months through Jul 2026, against 105 bbl in the 12 months before.Last 12 months: 39 bblbbl per monthmcf per month00205401060158020Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 63% over the last 12 monthsMonthly oil production and gas for TUMLINSON-COFFIELD UNIT #1, Aug 2023 to Jul 2026. Oil output fell 63% over the last 12 months. 39 bbl in the 12 months through Jul 2026, against 105 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month00205401060158020Jan 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 TUMLINSON-COFFIELD UNIT #1 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 TUMLINSON-COFFIELD UNIT #1 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 once, most recently in Sep 2021

Operators of this lease over timeTexowa, LLC, Aug 2021 to Aug 2021; McDay Energy Corp., Sep 2021 to Jul 202620222023202420252026Changed Sep 2021Texowa, LLCAug 2021 to Aug 2021McDay Energy Corp.Sep 2021 to now
Operators of this lease over timeTexowa, LLC, Aug 2021 to Aug 2021; McDay Energy Corp., Sep 2021 to Jul 202620222023202420252026Changed Sep 2021Texowa, LLCAug 2021 to Aug 2021McDay Energy Corp.Sep 2021 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on TUMLINSON-COFFIELD UNIT #1
API numberWell no.Status
42-127-326891Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Shell Trading (Us) CompanyOilGathers50Dec 1, 2021–
Midcon Gathering LLCOilGathers40Dec 1, 2021–
Sunray Marketing, LLCOilGathers10Dec 1, 2021–
Sunray Marketing, LLCOilGathers100Oct 1, 2021Dec 1, 2021
Midcon Gathering LLCOilGathers100Sep 1, 2021Oct 1, 2021
Plains Marketing, L.p.OilGathers100Feb 10, 2016Sep 1, 2021

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

Who buys my oilOil price check

40 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 Tumlinson-Coffield Unit #1
API numberWell no.Acreson the permit
42-127-32689140

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for TUMLINSON-COFFIELD UNIT #1
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026McDay Energy201200$80.46$2.89
Jun 2026McDay Energy301500$84.81$3.15
May 2026McDay Energy301200$102.13$2.94
Apr 2026McDay Energy20900$100.32$2.77
Mar 2026McDay Energy301200$91.38$3.04
Feb 2026McDay Energy301200$64.51$3.62
Jan 2026McDay Energy401200$60.04$7.72
Dec 2025McDay Energy30900$57.97$4.26
Nov 2025McDay Energy401200$60.06$3.79
Oct 2025McDay Energy301200$60.89$3.19
Sep 2025McDay Energy401500$63.96$2.97
Aug 2025McDay Energy501500$64.86$2.91
Jul 2025McDay Energy301200$68.39$3.20
Jun 2025McDay Energy40900$68.17$3.02
May 2025McDay Energy40900$62.17$3.12
Apr 2025McDay Energy50000$63.54$3.42
Mar 2025McDay Energy30000$68.24$4.12
Feb 2025McDay Energy60000$71.53$4.19
Jan 2025McDay Energy70000$75.74$4.13
Dec 2024McDay Energy120000$70.12$3.01
Nov 2024McDay Energy220000$69.95$2.12
Oct 2024McDay Energy20122000$71.99$2.20
Sep 2024McDay Energy100000$70.24$2.28
Aug 2024McDay Energy90000$76.68$1.99
Jul 2024McDay Energy150000$81.80$2.07
Jun 2024McDay Energy210000$79.77$2.54
May 2024McDay Energy560000$80.02$2.12
Apr 2024McDay Energy50138000$85.35$1.60
Mar 2024McDay Energy120000$81.28$1.49
Feb 2024McDay Energy110000$77.25$1.72
Jan 2024McDay Energy140000$74.15$3.18
Dec 2023McDay Energy130000$71.90$2.52
Nov 2023McDay Energy140000$77.69$2.71
Oct 2023McDay Energy160000$85.64$2.98
Sep 2023McDay Energy18107000$89.43$2.64
Aug 2023McDay Energy140000$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

OperatorMcDay Energy Corp.FieldBlakeway (Dixon Sand)CountyDimmit County

McDay Energy Corp. in Dimmit County

All McDay Energy Corp. leases →

Blakeway (Dixon Sand) field

No other producing leases in this field are in our data yet.

Leases within 10 km

Drilling permits within 10 km