Texas oil lease

Producing

GREYSTOKE 1-5 F

Name: GREYSTOKE 1-5 F monthly oil and gas production, Martin County, Texas
Creator: Texas Railroad Commission

Greystoke 1-5 F is an oil lease in Martin County, Texas, operated by Diamondback E&P LLC in the Spraberry (Trend Area) field.

1 well

144,282bbl oil, since Feb 2026

Operator: Diamondback E&P LLC
County: Martin County
Field: Spraberry (Trend Area)
RRC lease: 08-65319

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Where it sits

This county

Martin County

Gas, since Feb 2026: 244,976 mcf
Oil in Jul 2026: 13,591 bbl

First check

Production started February 2026; the first check is due by about June 28, 2026 (estimate).

When is my first royalty check due?

Production by month

Oil output fell 55% since Feb 2026

Oil (bars)
Gas (line)

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

96% of the gas went to a transmission line in the 6 months reported

Transmission line (2)
Lease fuel (1)
Flared (4)

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Transmission line (2)
96% · 234,019 mcf
Lease fuel (1)
4.0% · 9,876 mcf
Flared (4)
0.4% · 1,081 mcf

0.4% of the gas flared in the 6 months reported. No month above 3%.

1 well on this lease

Wells on GREYSTOKE 1-5 F
API number	Well no.	Status
42-317-46896	1WB	Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
Company	Product	Role	Share%	From
Medallion Operating Company, LLC	Oil	Gathers	100	Feb 13, 2026
Enterprise Products Operating LLC	Casinghead gas	Buys	100	Feb 13, 2026
Enterprise Products Operating LLC	Casinghead gas	Gathers	100	Feb 13, 2026

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

Who buys my oil Oil price check

727.71 acres on the newest permit

Worth asking
An allocation well is on this lease
A well drilled across several tracts shares its production by an allocation formula, so the decimal is not always your acres over the unit acres. Ask the operator for the allocation formula and the tract factor for your land.

Check your decimal on this lease

Permits for Greystoke 1-5 F
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-317-46896	1WB	Aug 11, 2025	Feb 13, 2026	727.71	Horizontal, allocation

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

Unit decimal checker

What Diamondback Energy, Inc. told investors it received

Diamondback E&P LLC is linked to Diamondback Energy, Inc. (FANG).

Realized prices reported by Diamondback Energy, Inc.
Quarter	Oil$ per bbl	Gas$ per mcf	Gas liquids$ per bbl	Filing
Q2 2026	$96.82	−$2.15	$18.56	SEC filing
Q1 2026	$73.47	$0.18	$16.68	SEC filing
Q4 2025	$58.00	$0.03	$13.51	SEC filing
Q3 2025	$64.60	$0.75	$17.28	SEC filing
Q2 2025	$63.23	$0.88	$18.13	SEC filing
Q1 2025	$70.95	$2.11	$23.94	SEC filing

SourceDiamondback Energy, Inc. quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

6 months, newest first

Ledger for GREYSTOKE 1-5 F
Month	Oil producedbbl	Oil soldbbl	Gas producedmcf	Gas soldmcf, codes 2+3	Flaredmcf	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026	13,591	13,568	48,779	47,399	243	$80.46	$2.89
Jun 2026	12,673	12,714	26,737	25,728	268	$84.81	$3.15
May 2026	18,428	18,451	37,347	35,609	423	$102.13	$2.94
Apr 2026	31,265	31,323	58,041	55,898	28	$100.32	$2.77
Mar 2026	40,859	40,891	47,215	44,846	103	$91.38	$3.04
Feb 2026	27,466	27,286	26,857	24,539	16	$64.51	$3.62

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

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