Texas oil lease

Producing

SIMPSON-MANN "B"

Name: SIMPSON-MANN "B" monthly oil and gas production, Tom Green County, Texas
Creator: Texas Railroad Commission

Simpson-Mann "B" is an oil lease in Tom Green County, Texas, operated by Core Petro, LLC in the Atkinson, W. (San Angelo) field.

6 wells

770bbl oil, last 12 months+74% vs prior year

Operator: Core Petro, LLC
County: Tom Green County
Field: Atkinson, W. (San Angelo)
RRC lease: 7C-12350

Is your check right?

Check my statement

Where it sits

This county

Tom Green County

Oil in Jul 2026: 55 bbl
Reporting since: Jan 2020

Production by month

Oil output rose 74% 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 Jun 2021

Core Petro, LLC Jun 2021 to now
Armor Petroleum, Inc. Jan 2020 to May 2021

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

6 wells on this lease

Wells on SIMPSON-MANN "B"
API number	Well no.	Status
42-451-31775	1	Active
42-451-31805	3	Active
42-451-31806	2	Active
42-451-31841	4	Active
42-451-31854	5	Active
42-451-31859	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
Energy Trans Crude Marketing LLC	Oil	Gathers	100	Jul 1, 2021	–
Sunoco Ptnrs. Mktg.&terminals LP	Oil	Gathers	100	Apr 1, 2002	Jul 1, 2021

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

Who buys my oil Oil price check

156.06 acres on the newest permit

The wells on this lease state different acreage

The permits state between 68.18 and 156.06 acres.

Permits for Simpson-Mann "B"
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-451-31859	9	Feb 8, 1988	Apr 24, 1988	156.06	Vertical
42-451-31854	5	Jan 8, 1988	Aug 31, 1988	156.06	Vertical
42-451-31841	4	Oct 28, 1987	Mar 20, 1988	156.05	Vertical
42-451-31805	3	Aug 24, 1987	Jan 29, 1988	68.18	Vertical
42-451-31806	2	Jul 29, 1987	Dec 9, 1987	156.06	Vertical
42-451-31775	1	Mar 9, 1987	Dec 9, 1987	68.18	Vertical

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for SIMPSON-MANN "B"
Month	Operator	Oil producedbbl	Oil soldbbl	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026Core Petro,	Core Petro, LLC	55	0	$80.46	$2.89
Jun 2026Core Petro,	Core Petro, LLC	51	64	$84.81	$3.15
May 2026Core Petro,	Core Petro, LLC	62	0	$102.13	$2.94
Apr 2026Core Petro,	Core Petro, LLC	53	177	$100.32	$2.77
Mar 2026Core Petro,	Core Petro, LLC	65	0	$91.38	$3.04
Feb 2026Core Petro,	Core Petro, LLC	56	0	$64.51	$3.62
Jan 2026Core Petro,	Core Petro, LLC	43	0	$60.04	$7.72
Dec 2025Core Petro,	Core Petro, LLC	150	176	$57.97	$4.26
Nov 2025Core Petro,	Core Petro, LLC	54	0	$60.06	$3.79
Oct 2025Core Petro,	Core Petro, LLC	110	164	$60.89	$3.19
Sep 2025Core Petro,	Core Petro, LLC	31	0	$63.96	$2.97
Aug 2025Core Petro,	Core Petro, LLC	40	164	$64.86	$2.91
Jul 2025Core Petro,	Core Petro, LLC	42	0	$68.39	$3.20
Jun 2025Core Petro,	Core Petro, LLC	39	0	$68.17	$3.02
May 2025Core Petro,	Core Petro, LLC	47	0	$62.17	$3.12
Apr 2025Core Petro,	Core Petro, LLC	20	93	$63.54	$3.42
Mar 2025Core Petro,	Core Petro, LLC	41	0	$68.24	$4.12
Feb 2025Core Petro,	Core Petro, LLC	57	170	$71.53	$4.19
Jan 2025Core Petro,	Core Petro, LLC	34	0	$75.74	$4.13
Dec 2024Core Petro,	Core Petro, LLC	33	0	$70.12	$3.01
Nov 2024Core Petro,	Core Petro, LLC	21	0	$69.95	$2.12
Oct 2024Core Petro,	Core Petro, LLC	31	108	$71.99	$2.20
Sep 2024Core Petro,	Core Petro, LLC	41	0	$70.24	$2.28
Aug 2024Core Petro,	Core Petro, LLC	37	0	$76.68	$1.99
Jul 2024Core Petro,	Core Petro, LLC	48	126	$81.80	$2.07
Jun 2024Core Petro,	Core Petro, LLC	50	0	$79.77	$2.54
May 2024Core Petro,	Core Petro, LLC	53	0	$80.02	$2.12
Apr 2024Core Petro,	Core Petro, LLC	42	0	$85.35	$1.60
Mar 2024Core Petro,	Core Petro, LLC	46	115	$81.28	$1.49
Feb 2024Core Petro,	Core Petro, LLC	64	0	$77.25	$1.72
Jan 2024Core Petro,	Core Petro, LLC	45	67	$74.15	$3.18
Dec 2023Core Petro,	Core Petro, LLC	25	0	$71.90	$2.52
Nov 2023Core Petro,	Core Petro, LLC	64	117	$77.69	$2.71
Oct 2023Core Petro,	Core Petro, LLC	15	0	$85.64	$2.98
Sep 2023Core Petro,	Core Petro, LLC	14	68	$89.43	$2.64
Aug 2023Core Petro,	Core Petro, LLC	10	84	$81.39	$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

How to check your stub against this lease

Do your checks match this lease?