Texas oil lease

Shut in

COSEY-DORN -A-

Name: COSEY-DORN -A- monthly oil and gas production, Caldwell County, Texas
Creator: Texas Railroad Commission

Cosey-Dorn -A- is an oil lease in Caldwell County, Texas, operated by Millennium Exploration Co. LLC in the Luling-Branyon field.

21 wells

134bbl oil, last 12 months−57% vs prior year

Operator: Millennium Exploration Co. LLC
County: Caldwell County
Field: Luling-Branyon
RRC lease: 01-07057

Is your check right?

Check my statement

Where it sits

This county

Caldwell County

Oil in Jul 2026: 0 bbl
Reporting since: Jan 2020

Checks stopped on this lease?

Operator
Operator changed: Millennium Exploration Co. LLC took over from Sotol Energy, Inc. in Apr 2025.
P-5
The previous operator's P-5 registration is listed as inactive since Nov 1, 2025 (last P-5 filed Nov 22, 2024).
Sales
No sales reported for the last 6 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 57% over the last 12 months

Oil (bars)
Last 12 months

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

No gas disposition reported for this lease

The operator has not reported where the gas went in the months we hold.

Who has run this lease

The operator changed once, most recently in Apr 2025

Millennium Exploration Co. LLC Apr 2025 to now
Sotol Energy, Inc. Jan 2020 to Mar 2025

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

21 wells on this lease

Wells on COSEY-DORN -A-
API number	Well no.	Status
42-055-31098	20	Shut-in
42-055-31099	21	Shut-in
42-055-31939	7	Active
42-055-31940	6	Active
42-055-31941	5	Active
42-055-31947	12	Active
42-055-32036	19	Shut-in
42-055-32037	18	Shut-in
42-055-32038	17	Active
42-055-32039	15	Active
42-055-32040	16	Active
42-055-32050	11	Active
42-055-32083	10	Active
42-055-32084	8	Active
42-055-32086	4	Active
42-055-32087	3	Active
42-055-32088	14	Active
42-055-32089	1	Shut-in
42-055-32090	13	Active
42-055-32092	2	Active
42-055-32103	9	Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
Company	Product	Role	Share%	From	Until
Harvest Marketing & Trading, LLC	Oil	Gathers	50	May 14, 2025	–
Truth Resources, L.p.	Oil	Gathers	50	May 14, 2025	–
Shell Trading (Us) Company	Oil	Gathers	100	Jun 1, 2009	May 14, 2025

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

Who buys my oil Oil price check

30 acres on the newest permit

Good to know
The wells on this lease state different acreage
The permits state between 30 and 76 acres. Use the acres from your own division order for the well you are paid on.
Good to know
21 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.

Check your decimal on this lease

Permits for Cosey-Dorn -A-
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-055-32103	9	Jul 14, 1981	Jul 11, 1990	30	Vertical
42-055-32036	19	Jun 3, 1981	Aug 6, 1981	76	Vertical
42-055-32037	18	Jun 3, 1981	Jul 17, 1990	76	Vertical
42-055-32038	17	Jun 3, 1981	Jul 29, 1981	76	Vertical
42-055-32039	15	Jun 3, 1981	Jul 17, 1990	76	Vertical
42-055-32040	16	Jun 3, 1981	Jul 11, 1990	76	Vertical
42-055-31939	7	Apr 15, 1981	Aug 7, 1981	30	Vertical
42-055-31940	6	Apr 15, 1981	Aug 7, 1981	30	Vertical
42-055-31941	5	Apr 15, 1981	May 28, 1981	30	Vertical
42-055-31947	12	Apr 15, 1981	Jul 11, 1990	30	Vertical
42-055-32083	10	Apr 15, 1981	Jul 11, 1990	30	Vertical
42-055-32084	8	Apr 15, 1981	Jul 11, 1990	30	Vertical

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for COSEY-DORN -A-
Month	Operator	Oil producedbbl	Oil soldbbl	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026Millennium Exploration	Millennium Exploration Co. LLC	0	0	$80.46	$2.89
Jun 2026Millennium Exploration	Millennium Exploration Co. LLC	0	0	$84.81	$3.15
May 2026Millennium Exploration	Millennium Exploration Co. LLC	0	0	$102.13	$2.94
Apr 2026Millennium Exploration	Millennium Exploration Co. LLC	0	0	$100.32	$2.77
Mar 2026Millennium Exploration	Millennium Exploration Co. LLC	0	0	$91.38	$3.04
Feb 2026Millennium Exploration	Millennium Exploration Co. LLC	0	0	$64.51	$3.62
Jan 2026Millennium Exploration	Millennium Exploration Co. LLC	103	127	$60.04	$7.72
Dec 2025Millennium Exploration	Millennium Exploration Co. LLC	3	0	$57.97	$4.26
Nov 2025Millennium Exploration	Millennium Exploration Co. LLC	6	0	$60.06	$3.79
Oct 2025Millennium Exploration	Millennium Exploration Co. LLC	2	0	$60.89	$3.19
Sep 2025Millennium Exploration	Millennium Exploration Co. LLC	14	0	$63.96	$2.97
Aug 2025Millennium Exploration	Millennium Exploration Co. LLC	6	0	$64.86	$2.91
Jul 2025Millennium Exploration	Millennium Exploration Co. LLC	6	0	$68.39	$3.20
Jun 2025Millennium Exploration	Millennium Exploration Co. LLC	39	152	$68.17	$3.02
May 2025Millennium Exploration	Millennium Exploration Co. LLC	38	0	$62.17	$3.12
Apr 2025Millennium Exploration	Millennium Exploration Co. LLC	39	0	$63.54	$3.42
Mar 2025Sotol Energy,	Sotol Energy, Inc.	16	0	$68.24	$4.12
Feb 2025Sotol Energy,	Sotol Energy, Inc.	3	159	$71.53	$4.19
Jan 2025Sotol Energy,	Sotol Energy, Inc.	6	0	$75.74	$4.13
Dec 2024Sotol Energy,	Sotol Energy, Inc.	10	0	$70.12	$3.01
Nov 2024Sotol Energy,	Sotol Energy, Inc.	90	0	$69.95	$2.12
Oct 2024Sotol Energy,	Sotol Energy, Inc.	14	0	$71.99	$2.20
Sep 2024Sotol Energy,	Sotol Energy, Inc.	26	182	$70.24	$2.28
Aug 2024Sotol Energy,	Sotol Energy, Inc.	27	0	$76.68	$1.99
Jul 2024Sotol Energy,	Sotol Energy, Inc.	81	0	$81.80	$2.07
Jun 2024Sotol Energy,	Sotol Energy, Inc.	74	0	$79.77	$2.54
May 2024Sotol Energy,	Sotol Energy, Inc.	10	0	$80.02	$2.12
Apr 2024Sotol Energy,	Sotol Energy, Inc.	6	168	$85.35	$1.60
Mar 2024Sotol Energy,	Sotol Energy, Inc.	2	0	$81.28	$1.49
Feb 2024Sotol Energy,	Sotol Energy, Inc.	5	0	$77.25	$1.72
Jan 2024Sotol Energy,	Sotol Energy, Inc.	0	0	$74.15	$3.18
Dec 2023Sotol Energy,	Sotol Energy, Inc.	24	0	$71.90	$2.52
Nov 2023Sotol Energy,	Sotol Energy, Inc.	40	0	$77.69	$2.71
Oct 2023Sotol Energy,	Sotol Energy, Inc.	27	0	$85.64	$2.98
Sep 2023Sotol Energy,	Sotol Energy, Inc.	13	0	$89.43	$2.64
Aug 2023Sotol Energy,	Sotol Energy, Inc.	0	0	$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?