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GUITAR "79"

Name: GUITAR "79" monthly oil and gas production, Callahan County, Texas
Creator: Texas Railroad Commission

Guitar "79" is an oil lease in Callahan County, Texas, operated by Grayrock Energy II, LLC in the Callahan County Regular field.

1 well

54bbl oil, last 12 months−51% vs prior year

Operator: Grayrock Energy II, LLC
County: Callahan County
Field: Callahan County Regular
RRC lease: 7B-30136

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Where it sits

This county

Callahan County

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

Checks stopped on this lease?

Sales
No sales reported for the last 9 months of state data (through Jul 2026).

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

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Production by month

Oil output fell 51% over the last 12 months

Jul 2026 was not reported.

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 Jan 2024

Grayrock Energy II, LLC Jan 2024 to Jun 2026
Rover Petroleum Operating, LLC Jan 2020 to Dec 2023

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on GUITAR "79"
API number	Well no.	Status
42-059-33069	1RE	Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
Company	Product	Role	Share%	From
Bml, Inc. B	Oil	Gathers	100	Dec 1, 2018
Davis Gas Processing, Inc.	Casinghead gas	Buys	100	Sep 1, 2018
Davis Gas Processing, Inc.	Casinghead gas	Gathers	100	May 20, 2009

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

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166 acres on the newest permit

Permits for Guitar "79"
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-059-33069	1RE	Jul 27, 2007	Apr 28, 2008	166	Vertical

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

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36 months, newest first

Ledger for GUITAR "79"
Month	Operator	Oil producedbbl	Oil soldbbl	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026No report	No report filed	–	–	$80.46	$2.89
Jun 2026Grayrock Energy	Grayrock Energy II, LLC	0	0	$84.81	$3.15
May 2026Grayrock Energy	Grayrock Energy II, LLC	0	0	$102.13	$2.94
Apr 2026Grayrock Energy	Grayrock Energy II, LLC	1	0	$100.32	$2.77
Mar 2026Grayrock Energy	Grayrock Energy II, LLC	3	0	$91.38	$3.04
Feb 2026Grayrock Energy	Grayrock Energy II, LLC	4	0	$64.51	$3.62
Jan 2026Grayrock Energy	Grayrock Energy II, LLC	4	0	$60.04	$7.72
Dec 2025Grayrock Energy	Grayrock Energy II, LLC	1	0	$57.97	$4.26
Nov 2025Grayrock Energy	Grayrock Energy II, LLC	4	0	$60.06	$3.79
Oct 2025Grayrock Energy	Grayrock Energy II, LLC	7	171	$60.89	$3.19
Sep 2025Grayrock Energy	Grayrock Energy II, LLC	8	0	$63.96	$2.97
Aug 2025Grayrock Energy	Grayrock Energy II, LLC	12	0	$64.86	$2.91
Jul 2025Grayrock Energy	Grayrock Energy II, LLC	10	0	$68.39	$3.20
Jun 2025Grayrock Energy	Grayrock Energy II, LLC	13	0	$68.17	$3.02
May 2025Grayrock Energy	Grayrock Energy II, LLC	13	0	$62.17	$3.12
Apr 2025Grayrock Energy	Grayrock Energy II, LLC	17	0	$63.54	$3.42
Mar 2025Grayrock Energy	Grayrock Energy II, LLC	15	0	$68.24	$4.12
Feb 2025Grayrock Energy	Grayrock Energy II, LLC	1	0	$71.53	$4.19
Jan 2025Grayrock Energy	Grayrock Energy II, LLC	1	0	$75.74	$4.13
Dec 2024Grayrock Energy	Grayrock Energy II, LLC	1	0	$70.12	$3.01
Nov 2024Grayrock Energy	Grayrock Energy II, LLC	8	0	$69.95	$2.12
Oct 2024Grayrock Energy	Grayrock Energy II, LLC	4	0	$71.99	$2.20
Sep 2024Grayrock Energy	Grayrock Energy II, LLC	3	0	$70.24	$2.28
Aug 2024Grayrock Energy	Grayrock Energy II, LLC	3	0	$76.68	$1.99
Jul 2024Grayrock Energy	Grayrock Energy II, LLC	2	0	$81.80	$2.07
Jun 2024Grayrock Energy	Grayrock Energy II, LLC	3	0	$79.77	$2.54
May 2024Grayrock Energy	Grayrock Energy II, LLC	0	0	$80.02	$2.12
Apr 2024Grayrock Energy	Grayrock Energy II, LLC	2	0	$85.35	$1.60
Mar 2024Grayrock Energy	Grayrock Energy II, LLC	0	0	$81.28	$1.49
Feb 2024Grayrock Energy	Grayrock Energy II, LLC	2	0	$77.25	$1.72
Jan 2024Grayrock Energy	Grayrock Energy II, LLC	0	0	$74.15	$3.18
Dec 2023Rover Petroleum	Rover Petroleum Operating, LLC	2	0	$71.90	$2.52
Nov 2023Rover Petroleum	Rover Petroleum Operating, LLC	8	0	$77.69	$2.71
Oct 2023Rover Petroleum	Rover Petroleum Operating, LLC	9	0	$85.64	$2.98
Sep 2023Rover Petroleum	Rover Petroleum Operating, LLC	2	0	$89.43	$2.64
Aug 2023Rover Petroleum	Rover Petroleum Operating, LLC	3	0	$81.39	$2.58

No report filed

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

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