Skip to content
Royalty Clerk

Texas oil lease

Producing

THUNDERBOLT C21-9 UNIT

Thunderbolt C21-9 Unit is an oil lease in Reeves County, Texas, operated by Coterra Energy Operating Co. in the Phantom (Wolfcamp) field.

1 well

22,370bbl oil, last 12 months+6% vs prior year
Operator
Coterra Energy Operating Co.
County
Reeves County
Field
Phantom (Wolfcamp)
RRC lease
08-46765

Is your check right?

Check my statement

Where it sits

This county

Reeves CountyReevesWinklerWardLovingReeves County
Reeves County
Gas, last 12 months
144,699 mcf
Oil in Jul 2026
1,896 bbl

Checks stopped on this lease?

  • Operator

    Operator changed: Coterra Energy Operating Co. took over from Cimarex Energy Co. in Nov 2025.

  • P-5

    The previous operator's P-5 registration is listed as delinquent (last P-5 filed Jul 8, 2025).

  • Buyer

    Buyer changed: COTERRA ENERGY OPERATING CO. replaced CIMAREX ENERGY CO. as the buyer of this lease's gas from oil wells on Jan 1, 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 rose 6% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 6% over the last 12 monthsMonthly oil production and gas for THUNDERBOLT C21-9 UNIT, Aug 2023 to Jul 2026. Oil output rose 6% over the last 12 months. 22,370 bbl in the 12 months through Jul 2026, against 21,113 bbl in the 12 months before.Last 12 months: 22,370 bblbbl per monthmcf per month005005,0001,00010k1,50015k2,00020k2,50025kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 6% over the last 12 monthsMonthly oil production and gas for THUNDERBOLT C21-9 UNIT, Aug 2023 to Jul 2026. Oil output rose 6% over the last 12 months. 22,370 bbl in the 12 months through Jul 2026, against 21,113 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005005,0001,00010k1,50015k2,00020k2,50025kJan 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

  • Processing plant (3)
  • Flared (4)
All of the gas went to a processing plant in the last 12 monthsShare of THUNDERBOLT C21-9 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 THUNDERBOLT C21-9 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 once, most recently in Nov 2025

Operators of this lease over timeCimarex Energy Co., Jan 2020 to Oct 2025; Coterra Energy Operating Co., Nov 2025 to Jul 20262020202120222023202420252026Changed Nov 2025Cimarex Energy Co.Jan 2020 to Oct 2025Coterra Energy Operating Co.Nov 2025 to now
Operators of this lease over timeCimarex Energy Co., Jan 2020 to Oct 2025; Coterra Energy Operating Co., Nov 2025 to Jul 20262020202120222023202420252026Changed Nov 2025Cimarex Energy Co.Jan 2020 to Oct 2025Coterra Energy Operating Co.Nov 2025 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on THUNDERBOLT C21-9 UNIT
API numberWell no.Status
42-389-347941HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Eastex Crude Company, LLCOilGathers50Jan 1, 2026–
Energy Transfer Marketing & TermOilGathers50Dec 1, 2022–
Coterra Energy Operating Co.Casinghead gasBuys100Jan 1, 2026–
Coterra Energy Operating Co.Casinghead gasGathers100Jan 1, 2026–
Cimarex Energy Co.Casinghead gasGathers100Nov 1, 2015Jan 1, 2026
Cimarex Energy Co.Casinghead gasBuys100Nov 1, 2015Jan 1, 2026
Eastex Crude CompanyOilGathers50Nov 1, 2015Jan 1, 2026
Sunoco Ptnrs. Mktg.&terminals LPOilGathers50Nov 1, 2015Dec 1, 2022

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

Who buys my oilOil price check

640 acres on the newest permit

Check your decimal on this lease
Permits for Thunderbolt C21-9 Unit
API numberWell no.Acreson the permit
42-389-347941H640

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

What Devon Energy Corporation told investors it received

Coterra Energy Operating Co. is linked to Devon Energy Corporation (CTRA).
Realized prices reported by Devon Energy Corporation
QuarterOil$ per bblFiling
Q2 2026$95.10SEC filing
Q1 2026$70.79SEC filing
Q3 2025$64.10SEC filing
Q2 2025$62.80SEC filing
Q1 2025$69.73SEC filing
Q3 2024$74.04SEC filing

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

Estimate your royalty

36 months, newest first

Ledger for THUNDERBOLT C21-9 UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Coterra Energy1,8961,79913,62513,6250$80.46$2.89
Jun 2026Coterra Energy1,8531,85012,41412,4140$84.81$3.15
May 2026Coterra Energy1,6521,64711,08511,0850$102.13$2.94
Apr 2026Coterra Energy1,9121,90812,51812,5180$100.32$2.77
Mar 2026Coterra Energy1,8931,91310,98410,9840$91.38$3.04
Feb 2026Coterra Energy1,7681,78411,63811,6380$64.51$3.62
Jan 2026Coterra Energy1,7151,67610,90310,9030$60.04$7.72
Dec 2025Coterra Energy2,0032,04513,63813,6380$57.97$4.26
Nov 2025Coterra Energy2,0132,00912,22912,2290$60.06$3.79
Oct 2025Cimarex Energy1,9941,93112,22212,2220$60.89$3.19
Sep 2025Cimarex Energy1,7481,82911,15811,1580$63.96$2.97
Aug 2025Cimarex Energy1,9231,90112,28512,2850$64.86$2.91
Jul 2025Cimarex Energy1,6141,68710,68010,6800$68.39$3.20
Jun 2025Cimarex Energy1,9011,81110,98910,9890$68.17$3.02
May 2025Cimarex Energy1,9601,96612,27412,2740$62.17$3.12
Apr 2025Cimarex Energy1,3281,3158,5728,5720$63.54$3.42
Mar 2025Cimarex Energy1,8671,90212,23012,2300$68.24$4.12
Feb 2025Cimarex Energy1,7481,71510,13010,1300$71.53$4.19
Jan 2025Cimarex Energy1,9041,83411,80111,8010$75.74$4.13
Dec 2024Cimarex Energy1,3831,4739,4849,4840$70.12$3.01
Nov 2024Cimarex Energy1,4421,41310,13110,1310$69.95$2.12
Oct 2024Cimarex Energy2,1232,16014,65514,6550$71.99$2.20
Sep 2024Cimarex Energy1,7631,73212,32512,3250$70.24$2.28
Aug 2024Cimarex Energy2,0802,06714,54814,5480$76.68$1.99
Jul 2024Cimarex Energy1,9371,95514,38014,3791$81.80$2.07
Jun 2024Cimarex Energy2,0252,02314,72014,7200$79.77$2.54
May 2024Cimarex Energy2,1362,10815,14215,1420$80.02$2.12
Apr 2024Cimarex Energy2,0972,11114,49714,4961$85.35$1.60
Mar 2024Cimarex Energy2,0872,14514,17414,1659$81.28$1.49
Feb 2024Cimarex Energy2,1242,12114,00513,9987$77.25$1.72
Jan 2024Cimarex Energy2,2012,22414,11314,09914$74.15$3.18
Dec 2023Cimarex Energy2,0482,04114,98514,9823$71.90$2.52
Nov 2023Cimarex Energy2,1942,19214,30014,28812$77.69$2.71
Oct 2023Cimarex Energy2,2702,31815,53115,49833$85.64$2.98
Sep 2023Cimarex Energy2,2142,21514,40014,35545$89.43$2.64
Aug 2023Cimarex Energy2,4862,41615,24315,19350$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

OperatorCoterra Energy Operating Co.FieldPhantom (Wolfcamp)CountyReeves County

Coterra Energy Operating Co. in Reeves County

All Coterra Energy Operating Co. leases →

Phantom (Wolfcamp) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km