Texas oil lease

Producing

GREYSTOKE 1-5 C

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

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

2 wells

217,801bbl oil, since Jan 2026

Operator: Diamondback E&P LLC
County: Martin County
Field: Spraberry (Trend Area)
RRC lease: 08-64851

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Where it sits

This county

Martin County

Gas, since Jan 2026: 270,130 mcf
Oil in Jul 2026: 37,376 bbl

First check

Production started March 2026; the first check is due by about July 29, 2026 (estimate).

When is my first royalty check due?

Production by month

Oil output rose 344% since Jan 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 5 months reported

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

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Transmission line (2)
96% · 260,066 mcf
Lease fuel (1)
3.1% · 8,296 mcf
Flared (4)
0.7% · 1,768 mcf

0.7% of the gas flared in the 5 months reported. No month above 3%.

2 wells on this lease

Wells on GREYSTOKE 1-5 C
API number	Well no.	Status
42-317-46902	2LS	Active
42-317-46903	1US	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	Jun 2, 2026
Enterprise Products Operating LLC	Casinghead gas	Buys	100	Jun 2, 2026
Enterprise Products Operating LLC	Casinghead gas	Gathers	100	Jun 2, 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 C
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-317-46902	2LS	Jul 10, 2025	Dec 6, 2025	727.71	Horizontal, allocation
42-317-46903	1US	Jul 10, 2025	Mar 15, 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

7 months, newest first

Ledger for GREYSTOKE 1-5 C
Month	Oil producedbbl	Oil soldbbl	Gas producedmcf	Gas soldmcf, codes 2+3	Flaredmcf	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026	37,376	37,331	74,475	72,369	371	$80.46	$2.89
Jun 2026	43,526	43,633	67,908	65,346	681	$84.81	$3.15
May 2026	53,953	53,907	57,457	54,811	644	$102.13	$2.94
Apr 2026	52,566	52,525	45,734	44,157	21	$100.32	$2.77
Mar 2026	30,380	30,270	24,556	23,383	51	$91.38	$3.04
Feb 2026	0	0	0	0	0	$64.51	$3.62
Jan 2026	0	0	0	0	0	$60.04	$7.72

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

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