Texas oil lease

Producing

TOMBSTONE 8-25 C

Name: TOMBSTONE 8-25 C monthly oil and gas production, Martin County, Texas
Creator: Texas Railroad Commission

Tombstone 8-25 C is an oil lease in Martin County, Texas, operated by Diamondback E&P LLC in the Spraberry (Trend Area) field.

1 well

66,291bbl oil, since Feb 2026

Operator: Diamondback E&P LLC
County: Martin County
Field: Spraberry (Trend Area)
RRC lease: 08-64689

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Where it sits

This county

Martin County

Gas, since Feb 2026: 64,080 mcf
Oil in Jul 2026: 24,994 bbl

First check

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

When is my first royalty check due?

Production by month

Oil output rose 4,133% since Feb 2026

Oil (bars)
Gas (line)

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

91% of the gas went to a transmission line in the 4 months reported

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

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Transmission line (2)
91% · 58,226 mcf
Lease fuel (1)
8.7% · 5,548 mcf
Flared (4)
0.5% · 306 mcf

0.5% of the gas flared in the 4 months reported. No month above 3%.

1 well on this lease

Wells on TOMBSTONE 8-25 C
API number	Well no.	Status
42-317-46527	3JM	Shut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
Company	Product	Role	Share%	From
Oryx Midland Oil Gathering LLC	Oil	Gathers	100	Jun 1, 2026
Et Gathering & Processing LLC	Casinghead gas	Buys	60	Jun 1, 2026
Enterprise Products Operating LLC	Casinghead gas	Buys	40	Jun 1, 2026
Brazos Midstream Oprtng Iii, LLC	Casinghead gas	Gathers	100	Jun 1, 2026

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

Who buys my oil Oil price check

800 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 Tombstone 8-25 C
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-317-46527	3JM	Jan 14, 2025	Aug 3, 2025	800	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 TOMBSTONE 8-25 C
Month	Oil producedbbl	Oil soldbbl	Gas producedmcf	Gas soldmcf, codes 2+3	Flaredmcf	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026	24,994	25,002	31,070	28,410	114	$80.46	$2.89
Jun 2026	22,832	22,803	19,195	17,524	0	$84.81	$3.15
May 2026	16,935	16,914	12,771	11,366	180	$102.13	$2.94
Apr 2026	1,530	1,527	1,044	926	12	$100.32	$2.77
Mar 2026	0	0	0	0	0	$91.38	$3.04
Feb 2026	0	0	0	0	0	$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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