Forister-Janysek Unit

Oil & Gas Property in Karnes County, TX

  2. Texas
  3. Karnes County, TX
  4. Oil & Gas Properties in Karnes County, TX
  5. Forister-Janysek Unit Oil & Gas Property

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Property Summary

Key data points for Forister-Janysek Unit

CountyKarnes County, TX
OperatorMARATHON OIL EF LLC
Production DatesApr 2012 - Jun 2026
Total Oil Production1,356,666 BBLs
Total Gas Production1,648,496 MCF
Recent Oil Production5,157 BBLs in May 2026
Recent Gas Production2,151 MCF in May 2026
Wells on Property4

Our Valuation Estimates for Forister-Janysek Unit

ShaleAssessment™

Not Available

MarketMultiple™

$570,377 **

* 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 2026

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
ChallengerKarnes County, TX22,266 BBLs56,445 MCFJun 2026
Charlotte UnitKarnes County, TX8,762 BBLs29,296 MCFJun 2026
FertschKarnes County, TX182 BBLs0 MCFJun 2026
Forister 541Karnes County, TX11,803 BBLs10,303 MCFJun 2026
Hysaw-HobsonKarnes County, TX15 BBLs0 MCFJun 2026
L. Pittman- F. Janysek Unit SaKarnes County, TX630 BBLs561 MCFJun 2026
Labus Pittman UnitKarnes County, TX5,833 BBLs5,448 MCFJun 2026
M.-Moczygemba M.-Jonas C SaKarnes County, TX769 BBLs525 MCFJun 2026
Martinez HenkeKarnes County, TX958 BBLs357 MCFJun 2026
Martinez UnitKarnes County, TX644 BBLs512 MCFJun 2026
Maurer BooneKarnes County, TX79 BBLs0 MCFMay 2026
Maurer-McFarland UnitKarnes County, TX5,383 BBLs9,294 MCFJun 2026
Medina Trial UnitKarnes County, TX1,381 BBLs470 MCFJun 2026
Medina-HoffmanKarnes County, TX9,204 BBLs12,157 MCFJun 2026
Medina-JonasKarnes County, TX9,720 BBLs13,589 MCFJun 2026
Mohr-Hons Medina-Hoffman SaKarnes County, TX2,745 BBLs6,514 MCFJun 2026
Mohr-Hons UnitKarnes County, TX6,179 BBLs5,594 MCFJun 2026
Mohr-Moczygemba UnitKarnes County, TX139 BBLs37 MCFJun 2026
RzeppaKarnes County, TX2 BBLs0 MCFMay 2026
Swize McFarland UnitKarnes County, TX7,354 BBLs14,358 MCFJun 2026

Companies in the Area

These are the closest 20 companies operating near the Forister-Janysek Unit property.

Company Name
1776 Energy Operators, LLC
Ageron Energy, LLC
Blackbrush O & G, LLC
Burlington Resources Oil & Gas Company LP
Caturus Energy, LLC
Devon Energy Production Company, L.P.
Encana Oil & Gas (USA) Inc.
EOG Resources Inc
Goodnight Midstream Permian, LLC
Greenwerks Outdoor Services LLC
Gulftex Energy, LLC
Hawthorn Energy Partners, LLC
Jaybird Operating, LLC
Marathon Oil Ef LLC
Natural Energy, Inc.
Repsol Oil & Gas USA, LLC
Rickaway Energy, Corp.
Rio-Tex, Inc.
Rollert Co., Inc., The
Tidal Petroleum, Inc.

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
2026MARATHON OIL EF LLCFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2026GREEN JAY MINERALS LLCFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2026LAWTER JACK W & DIANEFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2026DIANE PETERS LIMITED PARTNERFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2026PAWELEK ALANFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2026AMBER HARVEST LLCFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2026FREEHOLD ROYALTIES USA INCFORISTER-JANYSEK UNIT W#1H-4HMARATHON OIL EF LLC
2026EAGLE 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 UNITJun 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITJun 2026DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITJun 2026ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITJun 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITJun 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMay 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMay 2026DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMay 2026ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMay 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMay 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITApr 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITApr 2026DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITApr 2026ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITApr 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITApr 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMar 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMar 2026DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMar 2026ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMar 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITMar 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITFeb 2026TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITFeb 2026DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITFeb 2026ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10009FORISTER-JANYSEK UNITFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY