Skip to content
Royalty Clerk

Texas oil lease

Producing

GIESE UNIT

Giese Unit is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

5 wells

33,233bbl oil, last 12 months−7% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15848

Is your check right?

Check my statement

Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
27,219 mcf
Oil in Jul 2026
2,945 bbl

Production by month

Oil output fell 7% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 7% over the last 12 monthsMonthly oil production and gas for GIESE UNIT, Aug 2023 to Jul 2026. Oil output fell 7% over the last 12 months. 33,233 bbl in the 12 months through Jul 2026, against 35,811 bbl in the 12 months before.Last 12 months: 33,233 bblbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,0005,00010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 7% over the last 12 monthsMonthly oil production and gas for GIESE UNIT, Aug 2023 to Jul 2026. Oil output fell 7% over the last 12 months. 33,233 bbl in the 12 months through Jul 2026, against 35,811 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,0005,00010kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel

Flaring peaked at 16.7% of the gas in Aug 2023.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of GIESE UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 16.7% of the gas in Aug 2023.Share of the lease’s gas by disposition code, per month0%50%100%Mar 2024: fuel to plantFlared 16.7%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of GIESE UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 16.7% of the gas in Aug 2023.Share of gas by disposition code0%50%100%Mar 24: fuel to plantFlared 16.7%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    86% · 23,415 mcf

  • Lease fuel (1)

    13% · 3,422 mcf

  • Flared (4)

    1.4% · 382 mcf

1.4% of the gas flared in the last 12 months. 17 months above 3%.

5 wells on this lease

Wells on GIESE UNIT
API numberWell no.Status
42-013-344411HShut-in
42-013-355922HActive
42-013-355933HActive
42-013-355944HActive
42-013-355955HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers25Jul 1, 2022–
Gulfmark Energy, Inc.OilGathers25Jun 5, 2024–
Harvest Midstream CompanyOilGathers25Jun 5, 2024–
Trafigura Trading LLCOilGathers25Jun 5, 2024–
Marathon Oil Ef LLCCasinghead gasBuys100Mar 10, 2012–
Marathon Oil Ef LLCCasinghead gasGathers100Mar 10, 2012–
Genesis Crude Oil, L.p.OilGathers25Jul 1, 2022Jun 5, 2024
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022Jun 5, 2024
Statewide Crude Inc.OilGathers25Jul 1, 2022Jun 5, 2024
Enterprise Crude Oil LLCOilGathers20Mar 10, 2012Jul 1, 2022
Genesis Crude Oil, L.p.OilGathers10Mar 10, 2012Jul 1, 2022
Gulfmark Energy, Inc.OilGathers35Mar 10, 2012Jul 1, 2022

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

Who buys my oilOil price check

308 acres on the newest permit

Permits for Giese Unit
API numberWell no.Acreson the permit
42-013-355922H308
42-013-355933H308
42-013-355944H308
42-013-355955H308
42-013-344411H314.40

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 GIESE UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262,9453,0192,3922,06019$80.46$2.89
Jun 20263,3343,2552,3302,00824$84.81$3.15
May 20261,4341,4671,5911,39213$102.13$2.94
Apr 20262,2782,2862,1791,87022$100.32$2.77
Mar 20263,0082,9783,1212,73823$91.38$3.04
Feb 20262,3002,3081,5591,35012$64.51$3.62
Jan 20263,6803,6772,4682,16516$60.04$7.72
Dec 20252,9462,9261,6591,41811$57.97$4.26
Nov 20252,5092,5021,4211,2398$60.06$3.79
Oct 20252,2922,2811,7131,47022$60.89$3.19
Sep 20252,4342,4552,3321,95952$63.96$2.97
Aug 20254,0734,0454,4543,746160$64.86$2.91
Jul 20251,1581,22475659728$68.39$3.20
Jun 20252,7312,6873,4052,614223$68.17$3.02
May 20252,5062,5172,0561,65499$62.17$3.12
Apr 20252,7742,7772,3851,96762$63.54$3.42
Mar 20252,8962,8962,1641,74693$68.24$4.12
Feb 20252,7652,7741,6921,30954$71.53$4.19
Jan 20253,2413,2252,4331,90970$75.74$4.13
Dec 20243,1083,1122,8122,38159$70.12$3.01
Nov 20243,4583,4623,1802,66192$69.95$2.12
Oct 20243,6713,6672,9782,50195$71.99$2.20
Sep 20243,5443,5464,1593,60690$70.24$2.28
Aug 20243,9593,9383,4983,059107$76.68$1.99
Jul 20244,1734,1634,8424,325106$81.80$2.07
Jun 20243,9654,1063,4943,13797$79.77$2.54
May 20243,7003,6544,5473,099323$80.02$2.12
Apr 20243,9403,9553,9062,759236$85.35$1.60
Mar 20244,0424,0424,6353,476135$81.28$1.49
Feb 20243,6953,6874,4671,432319$77.25$1.72
Jan 20243,8803,8403,267224457$74.15$3.18
Dec 20233,4623,4784,7651,303285$71.90$2.52
Nov 20233,9913,9864,5341,388238$77.69$2.71
Oct 20234,3614,3515,5482,599279$85.64$2.98
Sep 20234,0344,0035,6723,429407$89.43$2.64
Aug 20233,6663,6773,8521,642642$81.39$2.58

Flared above 3%

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-1)CountyAtascosa County

Marathon Oil Ef LLC in Atascosa County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-1) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km