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Texas oil lease

Producing

GILLEY UNIT

Gilley Unit is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

8 wells

19,036bbl oil, last 12 months−39% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-09805

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
29,702 mcf
Oil in Jul 2026
839 bbl

Production by month

Oil output fell 39% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 39% over the last 12 monthsMonthly oil production and gas for GILLEY UNIT, Aug 2023 to Jul 2026. Oil output fell 39% over the last 12 months. 19,036 bbl in the 12 months through Jul 2026, against 31,417 bbl in the 12 months before.Last 12 months: 19,036 bblbbl per monthmcf per month002,0002,5004,0005,0006,0007,5008,00010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 39% over the last 12 monthsMonthly oil production and gas for GILLEY UNIT, Aug 2023 to Jul 2026. Oil output fell 39% over the last 12 months. 19,036 bbl in the 12 months through Jul 2026, against 31,417 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,0002,5004,0005,0006,0007,5008,00010kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

81% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
81% of the gas went to a processing plant in the last 12 monthsShare of GILLEY UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 81% of the gas went to a processing plant in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
81% of the gas went to a processing plant in the last 12 monthsShare of GILLEY UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 81% of the gas went to a processing plant in the last 12 months.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    81% · 23,983 mcf

  • Lease fuel (1)

    18% · 5,367 mcf

  • Flared (4)

    1.2% · 352 mcf

1.2% of the gas flared in the last 12 months. No month above 3%.

8 wells on this lease

Wells on GILLEY UNIT
API numberWell no.Status
42-255-317571HActive
42-255-323652HActive
42-255-35090505HActive
42-255-35091504HActive
42-255-350925HActive
42-255-350934HActive
42-255-350943HActive
42-255-35095503HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Bp Products North America Inc.OilGathers80Jul 22, 2015
Statewide Crude Inc.OilGathers10Jul 22, 2015
Marathon Oil Ef LLCOilGathers5Jul 22, 2015
Shell Trading (Us) CompanyOilGathers5Jul 22, 2015
Marathon Oil Ef LLCCasinghead gasBuys100Dec 1, 2012
Marathon Oil Ef LLCCasinghead gasGathers100Dec 1, 2012

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

Who buys my oilOil price check

320.14 acres on the newest permit

The wells on this lease state different acreage

The permits state between 320 and 378.53 acres.

8 wells are listed on this lease

Permits for Gilley Unit
API numberWell no.Acreson the permit
42-255-35090505H320.14
42-255-35091504H320.14
42-255-350925H320.14
42-255-350934H320.14
42-255-350943H320.14
42-255-35095503H320.14
42-255-323652H320
42-255-317571H378.53

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

What ConocoPhillips told investors it received

Marathon Oil Ef LLC is linked to ConocoPhillips (MRO).
Realized prices reported by ConocoPhillips
QuarterOil$ per bblFiling
Q2 2026$99.40SEC filing
Q1 2026$73.47SEC filing
Q3 2025$66.13SEC filing
Q2 2025$64.23SEC filing
Q1 2025$71.65SEC filing

SourceConocoPhillips quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for GILLEY UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026839887142951$80.46$2.89
Jun 20261,6971,6306484542$84.81$3.15
May 20261,1101,1093,0602,22020$102.13$2.94
Apr 20261,8091,7972,8072,39612$100.32$2.77
Mar 20268609202612142$91.38$3.04
Feb 20261,2251,22667947412$64.51$3.62
Jan 20262,5482,4912,5441,94139$60.04$7.72
Dec 20251,1381,1671,5711,29412$57.97$4.26
Nov 20252,1072,1064,0813,41323$60.06$3.79
Oct 20251,8081,8083,4042,92633$60.89$3.19
Sep 20251,9971,9695,2854,326132$63.96$2.97
Aug 20251,8981,8755,2204,23064$64.86$2.91
Jul 20251,6421,6483,5783,04014$68.39$3.20
Jun 20251,1451,1922,2181,71913$68.17$3.02
May 20251,3521,2992,9332,21219$62.17$3.12
Apr 20251,2171,2463,6002,85813$63.54$3.42
Mar 20252,6692,6816,4455,36420$68.24$4.12
Feb 20252,3722,4213,7263,21415$71.53$4.19
Jan 20252,9632,9434,5653,62847$75.74$4.13
Dec 20243,2903,2704,8113,85713$70.12$3.01
Nov 20242,1722,1663,9633,11117$69.95$2.12
Oct 20243,4583,4676,6975,71424$71.99$2.20
Sep 20244,1654,2147,6196,38616$70.24$2.28
Aug 20244,9724,9848,5327,15522$76.68$1.99
Jul 20245,5665,5628,6407,39525$81.80$2.07
Jun 20244,8464,7883,2342,9096$79.77$2.54
May 20242,6992,6543,2382,7629$80.02$2.12
Apr 20242,1252,1143,3362,96331$85.35$1.60
Mar 20241,9451,9477,1435,79528$81.28$1.49
Feb 20241,9351,9477,9146,44223$77.25$1.72
Jan 20242,5692,5827,3785,84957$74.15$3.18
Dec 20232,8372,8388,2926,15328$71.90$2.52
Nov 20231,7541,7796,7454,87644$77.69$2.71
Oct 20232,9402,9607,7896,12518$85.64$2.98
Sep 20233,5173,5137,7546,00115$89.43$2.64
Aug 20233,7473,7389,3977,34043$81.39$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

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This lease belongs to

OperatorMarathon Oil Ef LLCFieldEagleville (Eagle Ford-2)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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Eagleville (Eagle Ford-2) field

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