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Texas oil lease

Producing

GREYSTOKE 1-5 A

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

2 wells

177,461bbl oil, since Jan 2026
Operator
Diamondback E&P LLC
County
Martin County
Field
Spraberry (Trend Area)
RRC lease
08-64663

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Where it sits

This county

Martin CountyMartinGainesAndrewsHowardDawsonBordenMartin County
Martin County
Gas, since Jan 2026
218,715 mcf
Oil in Jul 2026
30,754 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 468% since Jan 2026

  • Oil (bars)
  • Gas (line)
Oil output rose 468% since Jan 2026Monthly oil production and gas for GREYSTOKE 1-5 A, Jan 2026 to Jul 2026. Oil output rose 468% since Jan 2026. Monthly average of 39,770 bbl in the latest 3 months, against 7,006 bbl in the first 3.bbl per monthmcf per month0010k20k20k40k30k60k40k80k50k100kOct 25Jan 26AprJul
Oil output rose 468% since Jan 2026Monthly oil production and gas for GREYSTOKE 1-5 A, Jan 2026 to Jul 2026. Oil output rose 468% since Jan 2026. Monthly average of 39,770 bbl in the latest 3 months, against 7,006 bbl in the first 3.bbl per monthmcf per month0010k20k20k40k30k60k40k80k50k100kJan 26Jul

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)
96% of the gas went to a transmission line in the 5 months reportedShare of GREYSTOKE 1-5 A gas by disposition code each month, Jan 2026 to Jul 2026. 96% of the gas went to a transmission line in the 5 months reported.Share of the lease’s gas by disposition code, per month0%50%100%Oct 25Jan 26AprJul
96% of the gas went to a transmission line in the 5 months reportedShare of GREYSTOKE 1-5 A gas by disposition code each month, Jan 2026 to Jul 2026. 96% of the gas went to a transmission line in the 5 months reported.Share of gas by disposition code0%50%100%Jan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    96% · 210,507 mcf

  • Lease fuel (1)

    3.1% · 6,680 mcf

  • Flared (4)

    0.7% · 1,528 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 A
API numberWell no.Status
42-317-468941LSActive
42-317-468951MSActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Medallion Operating Company, LLCOilGathers100Jun 1, 2026
Enterprise Products Operating LLCCasinghead gasBuys100Jun 1, 2026
Enterprise Products Operating LLCCasinghead gasGathers100Jun 1, 2026

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

Who buys my oilOil 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 A
API numberWell no.Acreson the permit
42-317-468941LS727.71
42-317-468951MS727.71

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.
QuarterOil$ per bblFiling
Q2 2026$96.82SEC filing
Q1 2026$73.47SEC filing
Q4 2025$58.00SEC filing
Q3 2025$64.60SEC filing
Q2 2025$63.23SEC filing
Q1 2025$70.95SEC 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 A
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202630,75430,72856,58554,984282$80.46$2.89
Jun 202640,92341,01262,95160,575632$84.81$3.15
May 202647,63347,56650,39448,074564$102.13$2.94
Apr 202637,13237,10131,43830,35814$100.32$2.77
Mar 202621,01920,94317,34716,51636$91.38$3.04
Feb 202600000$64.51$3.62
Jan 202600000$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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Nearby

This lease belongs to

OperatorDiamondback E&P LLCFieldSpraberry (Trend Area)CountyMartin County

Diamondback E&P LLC in Martin County

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Spraberry (Trend Area) field

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