Gross-McLean Unit

Oil & Gas Property in Karnes County, TX

Property Summary

Key data points for Gross-McLean Unit

CountyKarnes County, TX
OperatorMARATHON OIL EF LLC
Production DatesNov 2012 - Jan 2026
Total Oil Production1,137,374 BBLs
Total Gas Production3,272,070 MCF
Recent Oil Production1,091 BBLs in Dec 2025
Recent Gas Production1,334 MCF in Dec 2025
Wells on Property6

Our Valuation Estimates for Gross-McLean Unit

ShaleAssessment

$40,825 *

MarketMultiple

$113,127 **

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

Based on a decimal interest

Gross-McLean Unit Production Graph

Aggregated production of all wells and leases associated with this property
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to oil and gas production for Gross-McLean Unit
from Nov 2012 to Jan 2026

Wells on Gross-McLean Unit

API #Well NameOperatorStatusCountyEst. Daily Oil Prod.Est. Daily Gas Prod.Est. Daily Water Prod.LatitudeLongitude
42-255-32669GROSS-MCLEAN UNIT 1HMARATHON OIL EF LLCProducingKarnes County, TX28.821247-97.978677
42-255-32705GROSS-MCLEAN UNIT 2HMARATHON OIL EF LLCShut InKarnes County, TX28.821221-97.978749
42-255-32968GROSS-MCLEAN UNIT 3HMARATHON OIL EF LLCShut InKarnes County, TX28.807845-97.975966
42-255-36027GROSS-MCLEAN UNIT 4HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.818816-97.982156
42-255-36028GROSS-MCLEAN UNIT 5HMARATHON OIL EF LLCProducingKarnes County, TX28.818785-97.982248
42-255-36507GROSS-MCLEAN UNIT 502HMARATHON OIL EF LLCProducingKarnes County, TX28.820902-97.974987

Leases included in Gross-McLean Unit

Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
02-10338GROSS-MCLEAN UNITMARATHON OIL EF LLCKarnes County, TX
02-294905GROSS-MCLEAN UNIT 4HMARATHON OIL EF LLCKarnes County, TX
02-294906GROSS-MCLEAN UNIT 502HMARATHON OIL EF LLCKarnes County, TX
02-294907GROSS-MCLEAN UNIT 5HMARATHON OIL EF LLCKarnes County, TX

Nearby Properties

These are the closest 20 properties to the Gross-McLean Unit property.

Property NameLocationOil Prod.Gas Prod.Prod. Period
B. Dupnik A-H. Brown PsaKarnes County, TX1,757 BBLs1,440 MCFJan 2026
Best-Beard UnitKarnes County, TX791 BBLs930 MCFJan 2026
Brown-DupnikKarnes County, TX5,018 BBLs9,540 MCFJan 2026
Buehring UnitKarnes County, TX2,310 BBLs4,212 MCFJan 2026
Davenport UnitKarnes County, TX0 BBLs0 MCFJan 2026
Fransen UnitKarnes County, TX8,343 BBLs21,136 MCFFeb 2026
Fransen-Direct Assets SaKarnes County, TX19,116 BBLs56,788 MCFFeb 2026
Gilley UnitKarnes County, TX1,616 BBLs8,040 MCFJan 2026
Gross-RobertKarnes County, TX4,013 BBLs12,429 MCFJan 2026
Holland-Brown UnitKarnes County, TX2,994 BBLs1,853 MCFJan 2026
Jordan UnitKarnes County, TX2,566 BBLs2,897 MCFJan 2026
Kimble-GilleyKarnes County, TX3,893 BBLs10,452 MCFJan 2026
Luna UnitKarnes County, TX4,149 BBLs13,526 MCFJan 2026
Luna-May Unit PsaKarnes County, TX473 BBLs102 MCFJan 2026
May Unit 1Karnes County, TX8,605 BBLs30,449 MCFJan 2026
Pfeifer UnitKarnes County, TX19 BBLs74 MCFJan 2026
Pfeifer-BellKarnes County, TX4,810 BBLs10,679 MCFJan 2026
Pfeifer-Whitley Mejor SaKarnes County, TX3,034 BBLs5,777 MCFJan 2026
Robert Bowman UnitKarnes County, TX492 BBLs1,357 MCFJan 2026
Whitley Mejor UnitKarnes County, TX1,228 BBLs1,166 MCFJan 2026

Frac'ing activity on Gross-McLean Unit

API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
42-255-32669Gross McLean Unit 1H
42-255-32705Gross McLean Unit 2H
42-255-32968Gross McLean 3H
42-255-36027Gross McLean Unit 4H
42-255-36028Gross McLean Unit 5H
42-255-36507Gross McLean Unit 502H

Owners of Gross-McLean Unit

Royalty Ownership data is obtained from public records
YearOwnerProperty NameOperatorPercentageInterest TypeAppraisal ValueLegal Desciption
2025MARATHON OIL EF LLCGROSS-MCLEAN UNIT W#502HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCGROSS-MCLEAN UNIT W#5HMARATHON OIL EF LLC
2025DAVILA MANUEL G SHELTER TRUSTGROSS-MCLEAN UNIT W#502HMARATHON OIL EF LLC
2025DAVILA MANUEL G SHELTER TRUSTGROSS-MCLEAN UNIT W#5HMARATHON OIL EF LLC
2025AMBER HARVEST LLCGROSS-MCLEAN UNIT W#502HMARATHON OIL EF LLC
2025FREEHOLD ROYALTIES USA INCGROSS-MCLEAN UNIT W#502HMARATHON OIL EF LLC
2025FREEHOLD ROYALTIES USA INCGROSS-MCLEAN UNIT W#5HMARATHON OIL EF LLC
2025AMBER HARVEST LLCGROSS-MCLEAN UNIT W#5HMARATHON OIL EF LLC
Displaying 8 of 39 Owners   --   Full Ownership Data Available for Subscribers Only

Oil & Gas Sales on Gross-McLean Unit

Lease #Lease NameReporting PeriodProductVolumeValueGross PricePurchaserProducer
Lease #Lease NameReporting PeriodProductOil VolumeOil ValueCalculated Oil PricePurchaserProducer
02-10338GROSS-MCLEAN UNITDec 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10338GROSS-MCLEAN UNITNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10338GROSS-MCLEAN UNITNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10338GROSS-MCLEAN UNITNov 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-10338GROSS-MCLEAN UNITNov 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-10338GROSS-MCLEAN UNITNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HNov 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HNov 2025TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HNov 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HOct 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HOct 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HOct 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HOct 2025TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HOct 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-294906GROSS-MCLEAN UNIT 502HSep 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HSep 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HSep 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HSep 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HSep 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HSep 2025TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-294907GROSS-MCLEAN UNIT 5HSep 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-294906GROSS-MCLEAN UNIT 502HAug 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY