Skip to content
Royalty Clerk

Texas oil lease

Producing

L.B. HAILEY UNIT

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

3 wells

454bbl oil, last 12 months−97% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-10556

Is your check right?

Check my statement

Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
1,450 mcf
Oil in Jul 2026
15 bbl

Production by month

Oil output fell 97% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 97% over the last 12 monthsMonthly oil production and gas for L.B. HAILEY UNIT, Aug 2023 to Jul 2026. Oil output fell 97% over the last 12 months. 454 bbl in the 12 months through Jul 2026, against 14,586 bbl in the 12 months before.Last 12 months: 454 bblbbl per monthmcf per month001,0005,0002,00010k3,00015k4,00020kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 97% over the last 12 monthsMonthly oil production and gas for L.B. HAILEY UNIT, Aug 2023 to Jul 2026. Oil output fell 97% over the last 12 months. 454 bbl in the 12 months through Jul 2026, against 14,586 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0005,0002,00010k3,00015k4,00020kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

86% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
86% of the gas went to a processing plant in the last 12 monthsShare of L.B. HAILEY UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 86% 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
86% of the gas went to a processing plant in the last 12 monthsShare of L.B. HAILEY UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 86% 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)

    86% · 14,038 mcf

  • Lease fuel (1)

    13% · 2,173 mcf

  • Flared (4)

    0.2% · 29 mcf

0.2% of the gas flared in the last 12 months. No month above 3%.

3 wells on this lease

Wells on L.B. HAILEY UNIT
API numberWell no.Status
42-255-330893HActive
42-255-371471HActive
42-255-371482HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Statewide Crude Inc.OilGathers50Jul 1, 2022–
Plains Pipeline L.p.OilGathers25Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Jun 13, 2013–
Marathon Oil Ef LLCCasinghead gasGathers100Jun 13, 2013–
Gulfmark Energy, Inc.OilGathers10Jun 13, 2013Jul 1, 2022
Statewide Crude Inc.OilGathers90Jun 13, 2013Jul 1, 2022

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

Who buys my oilOil price check

351.90 acres on the newest permit

Permits for L.b. Hailey Unit
API numberWell no.Acreson the permit
42-255-371471H351.90
42-255-371482H351.90
42-255-330893H351.90

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 L.B. HAILEY UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202615152762361$80.46$2.89
Jun 202600000$84.81$3.15
May 202600000$102.13$2.94
Apr 202600000$100.32$2.77
Mar 202600000$91.38$3.04
Feb 202600000$64.51$3.62
Jan 202610111090$60.04$7.72
Dec 20253737870$57.97$4.26
Nov 20253736760$60.06$3.79
Oct 202502000$60.89$3.19
Sep 20251261303623151$63.96$2.97
Aug 20252292327876795$64.86$2.91
Jul 202535735375640$68.39$3.20
Jun 20253032988817502$68.17$3.02
May 202530393242780$62.17$3.12
Apr 20255275382,4922,1704$63.54$3.42
Mar 20251,0621,0714,7594,0686$68.24$4.12
Feb 20251,5521,5476,2595,45610$71.53$4.19
Jan 20251,7451,7417,4516,62426$75.74$4.13
Dec 20241,7711,7677,6286,55615$70.12$3.01
Nov 20241,6001,6076,3055,37318$69.95$2.12
Oct 20241,6521,6476,7585,71315$71.99$2.20
Sep 20241,7781,7797,7806,68525$70.24$2.28
Aug 20242,2092,2069,1237,92013$76.68$1.99
Jul 20242,4412,46010,2408,74918$81.80$2.07
Jun 20242,6772,66910,2858,65823$79.77$2.54
May 20243,7813,77713,36911,57030$80.02$2.12
Apr 20243,1413,1428,0796,91099$85.35$1.60
Mar 20241,1131,1462,7112,32913$81.28$1.49
Feb 20242,0512,0389,3728,37628$77.25$1.72
Jan 20242,2982,28210,3959,36039$74.15$3.18
Dec 20231,6361,65210,1359,24727$71.90$2.52
Nov 20232,0012,00410,7649,77720$77.69$2.71
Oct 20232,4622,46112,57311,64330$85.64$2.98
Sep 20232,8172,82411,53110,81111$89.43$2.64
Aug 20233,0183,02413,06912,24716$81.39$2.58

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

How to check your stub against this lease

Do your checks match this lease?

Check my statement

Nearby

This lease belongs to

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

Marathon Oil Ef LLC in Karnes County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-2) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km