Spahn-Mikkelson Unit

Oil & Gas Property in Karnes County, TX

Property Summary

Key data points for Spahn-Mikkelson Unit

CountyKarnes County, TX
OperatorMARATHON OIL EF LLC
Production DatesMay 2012 - Nov 2025
Total Oil Production995,432 BBLs
Total Gas Production1,473,052 MCF
Recent Oil Production3,055 BBLs in Oct 2025
Recent Gas Production6,361 MCF in Oct 2025
Wells on Property4

Our Valuation Estimates for Spahn-Mikkelson Unit

ShaleAssessment

$37,343 *

MarketMultiple

$229,709 **

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

Based on a decimal interest

Spahn-Mikkelson Unit Production Graph

Aggregated production of all wells and leases associated with this property
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to oil and gas production for Spahn-Mikkelson Unit
from May 2012 to Nov 2025

Wells on Spahn-Mikkelson Unit

API #Well NameOperatorStatusCountyEst. Daily Oil Prod.Est. Daily Gas Prod.Est. Daily Water Prod.LatitudeLongitude
42-255-32408SPAHN-MIKKELSON UNIT 1HMARATHON OIL EF LLCProducingKarnes County, TX28.872831-97.927820
42-255-32551SPAHN-MIKKELSON UNIT 2HMARATHON OIL EF LLCShut InKarnes County, TX28.883353-97.939711
42-255-36375SPAHN-MIKKELSON UNIT 3HMARATHON OIL EF LLCProducingKarnes County, TX28.883907-97.937915
42-255-36376SPAHN-MIKKELSON UNIT 503HMARATHON OIL EF LLCProducingKarnes County, TX28.883664-97.937708

Leases included in Spahn-Mikkelson Unit

Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
02-10060SPAHN-MIKKELSON UNITMARATHON OIL EF LLCKarnes County, TX

Nearby Properties

These are the closest 20 properties to the Spahn-Mikkelson Unit property.

Property NameLocationOil Prod.Gas Prod.Prod. Period
Carter UnitKarnes County, TX4,242 BBLs3,205 MCFNov 2025
Egbert UnitKarnes County, TX5,004 BBLs10,345 MCFNov 2025
Kempe-Laubach Mikkelson-Witte SaKarnes County, TX563 BBLs304 MCFNov 2025
Kempe-Laubach UnitKarnes County, TX3,814 BBLs4,792 MCFNov 2025
McCoy EgbertKarnes County, TX9,724 BBLs22,122 MCFNov 2025
McCoy-Egbert-Carter Unit Sa1Karnes County, TX3,704 BBLs10,875 MCFNov 2025
Mikkelson-WitteKarnes County, TX6,243 BBLs11,211 MCFNov 2025
Rippstein-Gotthardt UnitKarnes County, TX6,617 BBLs5,306 MCFNov 2025
Rippstein-Hons Rafter SaKarnes County, TX21,462 BBLs50,164 MCFNov 2025
Rippstein-MikkelsonKarnes County, TX7,611 BBLs9,809 MCFNov 2025
Rogers UnitKarnes County, TX816 BBLs854 MCFNov 2025
Rogers-McCoy Egbert SaKarnes County, TX2,252 BBLs2,697 MCFNov 2025
S.Busselman-R.Mikkelson SaKarnes County, TX1,054 BBLs1,326 MCFNov 2025
Salge UnitKarnes County, TX2,069 BBLs4,410 MCFNov 2025
Salge-Busselman UnitKarnes County, TX2,883 BBLs5,483 MCFNov 2025
Salge-Egbert Miller (Sa)Karnes County, TX1,486 BBLs722 MCFNov 2025
Salge-Kinkler-Busselman AlcKarnes County, TX1,523 BBLs7,949 MCFNov 2025
Salge-Yanta SaKarnes County, TX1,090 BBLs2,821 MCFNov 2025
Witte-Mikkelson UnitKarnes County, TX121 BBLs17 MCFOct 2025
Yosko Witte UnitKarnes County, TX0 BBLs0 MCFAug 2025

Frac'ing activity on Spahn-Mikkelson Unit

API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
42-255-32408Spahn Mikkelson 1H
42-255-32551Spahn Mikkelson 2H
42-255-36375Spahn Mikkelson 3H
42-255-36376Spahn Mikkelson 503H

Owners of Spahn-Mikkelson Unit

Royalty Ownership data is obtained from public records
YearOwnerProperty NameOperatorPercentageInterest TypeAppraisal ValueLegal Desciption
2025MARATHON OIL EF LLCSPAHN-MIKKELSON W#1H-3H,503HMARATHON OIL EF LLC
2025SPAHN CLIFFORD M & BECKYSPAHN-MIKKELSON W#1H-3H,503HMARATHON OIL EF LLC
2025DICKENS SANDRA ERLERSPAHN-MIKKELSON W#1H-3H,503HMARATHON OIL EF LLC
2025MIKKELSON KATHLENE KAISERSPAHN-MIKKELSON W#1H-3H,503HMARATHON OIL EF LLC
2025AMBER HARVEST LLCSPAHN-MIKKELSON W#1H-3H,503HMARATHON OIL EF LLC
2025FREEHOLD ROYALTIES USA INCSPAHN-MIKKELSON W#1H-3H,503HMARATHON OIL EF LLC
2025EAGLE FORD AUSTIN INTERESTS LPSPAHN-MIKKELSON W#1H-3H,503HMARATHON OIL EF LLC
2025NINE CANYON INTERESTS LPSPAHN-MIKKELSON W#1H-3H,503HMARATHON OIL EF LLC
Displaying 8 of 16 Owners   --   Full Ownership Data Available for Subscribers Only

Oil & Gas Sales on Spahn-Mikkelson Unit

Lease #Lease NameReporting PeriodProductVolumeValueGross PricePurchaserProducer
Lease #Lease NameReporting PeriodProductOil VolumeOil ValueCalculated Oil PricePurchaserProducer
02-10060SPAHN-MIKKELSON UNITDec 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITNov 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITNov 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITOct 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITOct 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITOct 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITOct 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITSep 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITSep 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITSep 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITSep 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITSep 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITAug 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITAug 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITAug 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITAug 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITAug 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITJul 2025TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITJul 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITJul 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITJul 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10060SPAHN-MIKKELSON UNITJul 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY