Texas oil lease

Producing

HEIDELBERG 30-31 I

Name: HEIDELBERG 30-31 I monthly oil and gas production, Martin County, Texas
Creator: Texas Railroad Commission

Heidelberg 30-31 I is an oil lease in Martin County, Texas, operated by Diamondback E&P LLC in the Spraberry (Trend Area) field.

2 wells

289,836bbl oil, since Dec 2025

Operator: Diamondback E&P LLC
County: Martin County
Field: Spraberry (Trend Area)
RRC lease: 08-64340

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Where it sits

This county

Martin County

Gas, since Dec 2025: 439,140 mcf
Oil in Jul 2026: 20,837 bbl

First check

Production started January 2026; the first check is due by about May 31, 2026 (estimate).

When is my first royalty check due?

Production by month

Oil output rose 5% since Dec 2025

Oil (bars)
Gas (line)

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

99% of the gas went to a transmission line in the 7 months reported

Flaring peaked at 10.9% of the gas in Jan 2026.

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

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Transmission line (2)
99% · 433,403 mcf
Flared (4)
1.0% · 4,355 mcf
Lease fuel (1)
0.3% · 1,382 mcf

1.0% of the gas flared in the 7 months reported. One month above 3%.

2 wells on this lease

Wells on HEIDELBERG 30-31 I
API number	Well no.	Status
42-317-46850	4WA	Active
42-317-46861	4JM	Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
Company	Product	Role	Share%	From
Et-S Permian Pipeline Company Ll	Oil	Gathers	100	Jul 27, 2025
Etc North Permian Midstream LLC	Casinghead gas	Buys	100	Jul 27, 2025
Energy Transfer Company	Casinghead gas	Gathers	100	Jul 27, 2025

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

Who buys my oil Oil price check

640.66 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 Heidelberg 30-31 I
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-317-46861	4JM	Jul 17, 2025	Aug 11, 2025	640.66	Horizontal, allocation
42-317-46850	4WA	Jun 23, 2025	Jul 27, 2025	640.66	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

8 months, newest first

Ledger for HEIDELBERG 30-31 I
Month	Oil producedbbl	Oil soldbbl	Gas producedmcf	Gas soldmcf, codes 2+3	Flaredmcf	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026	20,837	20,836	49,760	49,564	0	$80.46	$2.89
Jun 2026	27,088	27,096	55,117	53,889	1,025	$84.81	$3.15
May 2026	41,242	41,250	70,269	69,697	370	$102.13	$2.94
Apr 2026	52,460	52,450	90,111	89,579	291	$100.32	$2.77
Mar 2026	63,500	63,547	90,542	90,305	0	$91.38	$3.04
Feb 2026	61,430	61,389	64,386	63,587	601	$64.51	$3.62
Jan 2026	23,279	23,226	18,955	16,782	2,068	$60.04	$7.72
Dec 2025	0	0	0	0	0	$57.97	$4.26

Flared above 3%

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

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