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 - Jun 2025
Total Oil Production1,296,417 BBLs
Total Gas Production1,596,456 MCF
Recent Oil Production7,268 BBLs in May 2025
Recent Gas Production6,206 MCF in May 2025
Wells on Property4

Our Valuation Estimates for Forister-Janysek Unit

ShaleAssessment

Not Available

MarketMultiple

$1,063,434 **

* 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 Jun 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, TX9,648 BBLs38,007 MCFJun 2025
F.Janysek-M.Hons-S.McFarland SaKarnes County, TX365 BBLs473 MCFJun 2025
Forister 541Karnes County, TX16,731 BBLs32,480 MCFJun 2025
Hysaw-HobsonKarnes County, TX0 BBLs0 MCFJun 2025
L. Pittman- F. Janysek Unit SaKarnes County, TX1,291 BBLs2,916 MCFJun 2025
Labus Pittman UnitKarnes County, TX6,289 BBLs8,395 MCFJun 2025
M.-Moczygemba M.-Jonas C SaKarnes County, TX1,089 BBLs1,707 MCFJun 2025
Martinez HenkeKarnes County, TX1,211 BBLs651 MCFJun 2025
Martinez UnitKarnes County, TX1,310 BBLs490 MCFJun 2025
Maurer BooneKarnes County, TX110 BBLs0 MCFJun 2025
Maurer-McFarland UnitKarnes County, TX9,971 BBLs23,097 MCFJun 2025
Maurer-Swize McFarland SaKarnes County, TX1,377 BBLs3,465 MCFJun 2025
Medina Trial UnitKarnes County, TX2,506 BBLs3,139 MCFJun 2025
Medina-HoffmanKarnes County, TX9,614 BBLs15,485 MCFJun 2025
Medina-JonasKarnes County, TX12,821 BBLs12,445 MCFJun 2025
Mohr-Hons Medina-Hoffman SaKarnes County, TX2,973 BBLs4,416 MCFJun 2025
Mohr-Hons UnitKarnes County, TX9,658 BBLs12,050 MCFJun 2025
Mohr-Moczygemba UnitKarnes County, TX1,567 BBLs1,763 MCFJun 2025
RzeppaKarnes County, TX36 BBLs0 MCFJun 2025
Swize McFarland UnitKarnes County, TX7,921 BBLs16,533 MCFJun 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