Texas oil lease

Producing

GREYSTOKE 1-5 G

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

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

1 well

149,947bbl oil, since Feb 2026

Operator: Diamondback E&P LLC
County: Martin County
Field: Spraberry (Trend Area)
RRC lease: 08-65237

Is your check right?

Check my statement

Where it sits

This county

Martin County

Gas, since Feb 2026: 263,389 mcf
Oil in Jul 2026: 14,448 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 50% since Feb 2026

Oil (bars)
Gas (line)

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

95% 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)
95% · 251,393 mcf
Lease fuel (1)
4.1% · 10,730 mcf
Flared (4)
0.5% · 1,266 mcf

0.5% of the gas flared in the 6 months reported. No month above 3%.

1 well on this lease

Wells on GREYSTOKE 1-5 G
API number	Well no.	Status
42-317-46905	2WB	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 11, 2026
Enterprise Products Operating LLC	Casinghead gas	Buys	100	Feb 11, 2026
Enterprise Products Operating LLC	Casinghead gas	Gathers	100	Feb 11, 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 G
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-317-46905	2WB	Aug 11, 2025	Feb 11, 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 G
Month	Oil producedbbl	Oil soldbbl	Gas producedmcf	Gas soldmcf, codes 2+3	Flaredmcf	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026	14,448	14,425	43,639	42,405	217	$80.46	$2.89
Jun 2026	13,819	13,870	25,776	24,803	259	$84.81	$3.15
May 2026	21,972	21,979	56,452	53,820	640	$102.13	$2.94
Apr 2026	30,400	30,458	61,437	59,157	30	$100.32	$2.77
Mar 2026	40,220	40,265	47,033	44,670	103	$91.38	$3.04
Feb 2026	29,088	28,898	29,052	26,538	17	$64.51	$3.62

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?