Forister-Janysek Unit

Oil & Gas Property in Karnes County, TX

Property Summary

Key data points for Forister-Janysek Unit

CountyKarnes County, TX
OperatorMARATHON OIL EF LLC
Production DatesApr 2012 - Jul 2025
Total Oil Production1,302,675 BBLs
Total Gas Production1,601,853 MCF
Recent Oil Production6,320 BBLs in Jun 2025
Recent Gas Production5,436 MCF in Jun 2025
Wells on Property4

Our Valuation Estimates for Forister-Janysek Unit

ShaleAssessment

Not Available

MarketMultiple

$980,477 **

* Assessment based on future expected revenue
** Based on a 36 month multiple of average monthly estimated revenue

Based on a decimal interest

Forister-Janysek Unit Production Graph

Aggregated production of all wells and leases associated with this property
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to oil and gas production for Forister-Janysek Unit
from Apr 2012 to Jul 2025

Wells on Forister-Janysek Unit

API #Well NameOperatorStatusCountyEst. Daily Oil Prod.Est. Daily Gas Prod.Est. Daily Water Prod.LatitudeLongitude
42-255-32311FORISTER-JANYSEK UNIT 1HMARATHON OIL EF LLCProducingKarnes County, TX28.885831-98.003871
42-255-35365FORISTER-JANYSEK UNIT 2HMARATHON OIL EF LLCProducingKarnes County, TX28.899985-98.005329
42-255-35366FORISTER-JANYSEK UNIT 3HMARATHON OIL EF LLCProducingKarnes County, TX28.899990-98.005235
42-255-37621FORISTER-JANYSEK UNIT 4HMARATHON OIL EF LLCProducingKarnes County, TX28.885732-97.999982

Leases included in Forister-Janysek Unit

Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
02-10009FORISTER-JANYSEK UNITMARATHON OIL EF LLCKarnes County, TX

Nearby Properties

These are the closest 20 properties to the Forister-Janysek Unit property.

Property NameLocationOil Prod.Gas Prod.Prod. Period
Charlotte UnitKarnes County, TX9,328 BBLs32,519 MCFJul 2025
F.Janysek-M.Hons-S.McFarland SaKarnes County, TX412 BBLs506 MCFJul 2025
Forister 541Karnes County, TX15,117 BBLs28,903 MCFJul 2025
Hysaw-HobsonKarnes County, TX40 BBLs0 MCFJul 2025
L. Pittman- F. Janysek Unit SaKarnes County, TX959 BBLs2,188 MCFJul 2025
Labus Pittman UnitKarnes County, TX6,311 BBLs8,005 MCFJul 2025
M.-Moczygemba M.-Jonas C SaKarnes County, TX980 BBLs1,445 MCFJul 2025
Martinez HenkeKarnes County, TX1,537 BBLs788 MCFJul 2025
Martinez UnitKarnes County, TX1,259 BBLs515 MCFJul 2025
Maurer BooneKarnes County, TX84 BBLs0 MCFJul 2025
Maurer-McFarland UnitKarnes County, TX8,085 BBLs20,336 MCFJul 2025
Maurer-Swize McFarland SaKarnes County, TX1,378 BBLs3,359 MCFJul 2025
Medina Trial UnitKarnes County, TX2,169 BBLs2,454 MCFJul 2025
Medina-HoffmanKarnes County, TX8,144 BBLs13,429 MCFJul 2025
Medina-JonasKarnes County, TX14,310 BBLs14,995 MCFJul 2025
Mohr-Hons Medina-Hoffman SaKarnes County, TX2,736 BBLs3,832 MCFJul 2025
Mohr-Hons UnitKarnes County, TX9,213 BBLs10,828 MCFJul 2025
Mohr-Moczygemba UnitKarnes County, TX1,212 BBLs1,510 MCFJul 2025
RzeppaKarnes County, TX37 BBLs0 MCFJul 2025
Swize McFarland UnitKarnes County, TX7,921 BBLs14,858 MCFJul 2025

Frac'ing activity on Forister-Janysek Unit

API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
42-255-32311Forister Janyseck 1H
42-255-35365Forister Janysek 2H
42-255-35366Forister Janysek 3H
42-255-37621Forister-Janysek Unit 4H

Owners of Forister-Janysek Unit

Royalty Ownership data is obtained from public records
YearOwnerProperty NameOperatorPercentageInterest TypeAppraisal ValueLegal Desciption
2025MARATHON OIL EF LLCFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2025GREEN JAY MINERALS LLCFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2025LAWTER JACK W & DIANEFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2025DIANE PETERS LIMITED PARTNERFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2025PAWELEK ALANFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2025AMBER HARVEST LLCFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2025FREEHOLD ROYALTIES USA INCFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2025EAGLE FORD AUSTIN INTERESTS LPFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
Displaying 8 of 15 Owners   --   Full Ownership Data Available for Subscribers Only

Oil & Gas Sales on Forister-Janysek Unit

Lease #Lease NameReporting PeriodProductVolumeValueGross PricePurchaserProducer
Lease #Lease NameReporting PeriodProductOil VolumeOil ValueCalculated Oil PricePurchaserProducer
02-10009FORISTER-JANYSEK UNITApr 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITMar 2025MARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITMar 2025DCP OPERATING COMPANY, LPMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITMar 2025TARGA MIDSTREAM SERVICES LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITMar 2025ENERFIN AGUA DULCE LPMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITFeb 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITFeb 2025MARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITFeb 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITFeb 2025DCP OPERATING COMPANY, LPMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITFeb 2025TARGA MIDSTREAM SERVICES LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITFeb 2025ENERFIN AGUA DULCE LPMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITJan 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITJan 2025MARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITJan 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITJan 2025DCP OPERATING COMPANY, LPMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITJan 2025TARGA MIDSTREAM SERVICES LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITJan 2025ENERFIN AGUA DULCE LPMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITDec 2024MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITDec 2024MARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITDec 2024MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITDec 2024DCP OPERATING COMPANY, LPMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITDec 2024TARGA MIDSTREAM SERVICES LLCMARATHON OIL EF LLC
02-10009FORISTER-JANYSEK UNITDec 2024ENERFIN AGUA DULCE LPMARATHON OIL EF LLC