Foster Unit

Oil & Gas Property in Karnes County, TX

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

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Property Summary

Key data points for Foster Unit

CountyKarnes County, TX
OperatorMARATHON OIL EF LLC
Production DatesApr 2011 - Nov 2025
Total Oil Production3,719,847 BBLs
Total Gas Production27,171,645 MCF
Recent Oil Production4,361 BBLs in Oct 2025
Recent Gas Production53,850 MCF in Oct 2025
Wells on Property27

Our Valuation Estimates for Foster Unit

ShaleAssessment™

$184,820 *

MarketMultiple™

$748,710 **

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

Based on a decimal interest

Foster Unit Production Graph

Aggregated production of all wells and leases associated with this property
Subscribe for Full Access Subscribe now to gain immediate access
to oil and gas production for Foster Unit
from Apr 2011 to Nov 2025

Wells on Foster Unit

API #Well NameOperatorStatusCountyEst. Daily Oil Prod.Est. Daily Gas Prod.Est. Daily Water Prod.LatitudeLongitude
API #Well NameOperatorStatusCountyEst. Daily Oil Prod.Est. Daily Gas Prod.Est. Daily Water Prod.LatitudeLongitude
42-255-31790FOSTER UNIT AC 1HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.812165-97.916596
42-255-33960FOSTER UNIT 6HMARATHON OIL EF LLCProducingKarnes County, TX28.812225-97.914189
42-255-33968FOSTER UNIT 2HMARATHON OIL EF LLCProducingKarnes County, TX28.812107-97.914541
42-255-33969FOSTER UNIT 3HMARATHON OIL EF LLCProducingKarnes County, TX28.812136-97.914453
42-255-33970FOSTER UNIT 4HMARATHON OIL EF LLCProducingKarnes County, TX28.812165-97.914365
42-255-33971FOSTER UNIT 5HMARATHON OIL EF LLCProducingKarnes County, TX28.812194-97.914278
42-255-34685FOSTER UNIT AC 11HMARATHON OIL EF LLCProducingKarnes County, TX28.812667-97.913289
42-255-34686FOSTER UNIT 509HMARATHON OIL EF LLCProducingKarnes County, TX28.812639-97.913377
42-255-34687FOSTER UNIT AC 10HMARATHON OIL EF LLCProducingKarnes County, TX28.812610-97.913464
42-255-34688FOSTER UNIT 508HMARATHON OIL EF LLCProducingKarnes County, TX28.812580-97.913552
42-255-34689FOSTER UNIT AC 9HMARATHON OIL EF LLCProducingKarnes County, TX28.812552-97.913640
42-255-34807FOSTER UNIT 12HMARATHON OIL EF LLCHorizontal Well Surface LocatioKarnes County, TX28.796920-97.907745
42-255-34808FOSTER UNIT 507HMARATHON OIL EF LLCHorizontal Well Surface LocatioKarnes County, TX28.797440-97.905948
42-255-34809FOSTER UNIT AC 7HMARATHON OIL EF LLCHorizontal Well Surface LocatioKarnes County, TX28.796953-97.907781
42-255-34810FOSTER UNIT AC 8HMARATHON OIL EF LLCHorizontal Well Surface LocatioKarnes County, TX28.796721-97.907680
42-255-36061FOSTER UNIT AC 5HMARATHON OIL EF LLCProducingKarnes County, TX28.798340-97.910144
42-255-36062FOSTER UNIT 10HMARATHON OIL EF LLCProducingKarnes County, TX28.797842-97.909733
42-255-36063FOSTER UNIT 11HMARATHON OIL EF LLCProducingKarnes County, TX28.798006-97.909806
42-255-36064FOSTER UNIT 12HMARATHON OIL EF LLCProducingKarnes County, TX28.798428-97.910155
42-255-36065FOSTER UNIT 505HMARATHON OIL EF LLCProducingKarnes County, TX28.798181-97.910030
42-255-36066FOSTER UNIT 507HMARATHON OIL EF LLCProducingKarnes County, TX28.798511-97.910191
42-255-36623FOSTER UNIT 7HMARATHON OIL EF LLCProducingKarnes County, TX28.796922-97.913637
42-255-36624FOSTER UNIT 9HMARATHON OIL EF LLCProducingKarnes County, TX28.797238-97.913750
42-255-36630FOSTER UNIT 8HMARATHON OIL EF LLCProducingKarnes County, TX28.797079-97.913695
42-255-36631FOSTER UNIT 502HMARATHON OIL EF LLCProducingKarnes County, TX28.797002-97.913665
42-255-36632FOSTER UNIT 504HMARATHON OIL EF LLCProducingKarnes County, TX28.797318-97.913778
42-255-36633FOSTER UNIT AC 3HMARATHON OIL EF LLCProducingKarnes County, TX28.797160-97.913722

Leases included in Foster Unit

Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
02-265037FOSTER UNIT AC 1HMARATHON OIL EF LLCKarnes County, TX
02-265038FOSTER UNIT AC 1HMARATHON OIL EF LLCKarnes County, TX
02-277097FOSTER UNIT 4HMARATHON OIL EF LLCKarnes County, TX
02-277098FOSTER UNIT 5HMARATHON OIL EF LLCKarnes County, TX
02-277099FOSTER UNIT 6HMARATHON OIL EF LLCKarnes County, TX
02-277100FOSTER UNIT 2HMARATHON OIL EF LLCKarnes County, TX
02-277121FOSTER UNIT 3HMARATHON OIL EF LLCKarnes County, TX
02-279840FOSTER UNIT 509HMARATHON OIL EF LLCKarnes County, TX
02-280185FOSTER UNIT 508HMARATHON OIL EF LLCKarnes County, TX
02-280471FOSTER UNIT AC 9HMARATHON OIL EF LLCKarnes County, TX
02-280492FOSTER UNIT AC 11HMARATHON OIL EF LLCKarnes County, TX
02-280526FOSTER UNIT AC 10HMARATHON OIL EF LLCKarnes County, TX
02-285281FOSTER UNIT 12HMARATHON OIL EF LLCKarnes County, TX
02-285305FOSTER UNIT 507HMARATHON OIL EF LLCKarnes County, TX
02-285539FOSTER UNIT 11HMARATHON OIL EF LLCKarnes County, TX
02-285556FOSTER UNIT 505HMARATHON OIL EF LLCKarnes County, TX
02-285564FOSTER UNIT 10HMARATHON OIL EF LLCKarnes County, TX
02-285916FOSTER UNIT AC 5HMARATHON OIL EF LLCKarnes County, TX
02-288703FOSTER UNIT 502HMARATHON OIL EF LLCKarnes County, TX
02-288718FOSTER UNIT AC 3HMARATHON OIL EF LLCKarnes County, TX
02-288719FOSTER UNIT 8HMARATHON OIL EF LLCKarnes County, TX
02-288783FOSTER UNIT 7HMARATHON OIL EF LLCKarnes County, TX
02-289222FOSTER UNIT 504HMARATHON OIL EF LLCKarnes County, TX
02-289223FOSTER UNIT 9HMARATHON OIL EF LLCKarnes County, TX

Nearby Properties

These are the closest 20 properties to the Foster Unit property.

Property NameLocationOil Prod.Gas Prod.Prod. Period
Barboza UnitKarnes County, TX7,235 BBLs54,454 MCFNov 2025
Blackjack UnitKarnes County, TX1,038 BBLs18,386 MCFNov 2025
Culberson-Hughes UnitKarnes County, TX793 BBLs1,502 MCFNov 2025
Franke UnitKarnes County, TX16,816 BBLs78,042 MCFNov 2025
Franke-Foster-Patino Sa1Karnes County, TX1,940 BBLs21,531 MCFNov 2025
Franke-JohnsonKarnes County, TX11,809 BBLs158,447 MCFNov 2025
Graef Gas Unit 1Karnes County, TX4,921 BBLs51,358 MCFNov 2025
Johnson-Tschirhart UnitKarnes County, TX23,004 BBLs168,073 MCFDec 2025
Kotara-Ridley UnitKarnes County, TX5,569 BBLs40,118 MCFNov 2025
L.B. Hailey UnitKarnes County, TX12,923 BBLs159,594 MCFNov 2025
May Unit 1Karnes County, TX4,923 BBLs27,608 MCFNov 2025
McAlisterKarnes County, TX8,890 BBLs85,802 MCFNov 2025
Murphy-KotaraKarnes County, TX1,824 BBLs9,275 MCFNov 2025
Murphy-Sinclair UnitKarnes County, TX4,915 BBLs27,526 MCFNov 2025
Patino UnitKarnes County, TX15,251 BBLs186,393 MCFNov 2025
Patino-Franke Unit Sa1 1HKarnes County, TX13,257 BBLs122,478 MCFNov 2025
R.Foester-C.Hughes Unit SaKarnes County, TX515 BBLs1,073 MCFNov 2025
Rogers-Foester UnitKarnes County, TX670 BBLs1,875 MCFNov 2025
Urrutia UnitKarnes County, TX1,561 BBLs3,862 MCFNov 2025
Willbern-Buegeler Unit 1HKarnes County, TX9 BBLs4,413 MCFNov 2025

Companies in the Area

These are the closest 20 companies operating near the Foster Unit property.

Company Name
Blackbrush O & G, LLC
Burlington Resources Oil & Gas Company LP
Devon Energy Production Company, L.P.
Dewbre Petroleum Corporation
Encana Oil & Gas (USA) Inc.
Goldking Prod. Co.
Hilcorp Energy Company
Jones, Edwin M. Oil Co.
Marathon Oil Ef LLC
Mobil Producing TX. & N.M. Inc.
Ovintiv USA Inc.
Paloma Resources, LLC
Parker & Parsley Development Co.
Petrohawk Operating Company
Pioneer Natural Res. USA, Inc.
Plains Exploration & Prod. Co.
Repsol Oil & Gas USA, LLC
Statoil Texas Onshore Prop LLC
Texstar North America, Inc.
Warwick-Artemis, LLC

Frac'ing activity on Foster Unit

API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
42-255-33960Foster Unit 6H
42-255-33968Foster Unit 2H
42-255-33969Foster Unit 3H
42-255-33970Foster Unit 4H
42-255-33971Foster Unit 5H
42-255-34685Foster Unit AC 11H
42-255-34686Foster Unit 509H
42-255-34687Foster Unit AC 10H
42-255-34688Foster Unit 508H
42-255-34689Foster Unit AC 9H
42-255-36061Foster Unit AC 5H
42-255-36062Foster Unit 10H
42-255-36063Foster Unit 11H
42-255-36064Foster Unit 12H
42-255-36065Foster Unit 505H
42-255-36066Foster Unit 507H
42-255-36623Foster Unit 7H
42-255-36624Foster Unit 9H
42-255-36630Foster Unit 8H
42-255-36631Foster Unit 502H
42-255-36632Foster Unit 504H
42-255-36633Foster Unit AC 3H

Owners of Foster Unit

Royalty Ownership data is obtained from public records
YearOwnerProperty NameOperatorPercentageInterest TypeAppraisal ValueLegal Desciption
2025MARATHON OIL EF LLCFOSTER UNIT AC W#3HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCFOSTER UNIT W#507HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCFOSTER UNIT W#9HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCFOSTER UNIT W#8HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCFOSTER UNIT W#504HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCFOSTER UNIT W#509HMARATHON OIL EF LLC
2025FOSTER KELLY RUTH HAILEYFOSTER UNIT AC W#3HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCFOSTER UNIT AC W#9HMARATHON OIL EF LLC
Displaying 8 of 346 Owners   --   Full Ownership Data Available for Subscribers Only

Oil & Gas Sales on Foster Unit

Lease #Lease NameReporting PeriodProductVolumeValueGross PricePurchaserProducer
Lease #Lease NameReporting PeriodProductOil VolumeOil ValueCalculated Oil PricePurchaserProducer
02-277097FOSTER UNIT 4HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277097FOSTER UNIT 4HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277097FOSTER UNIT 4HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277097FOSTER UNIT 4HNov 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-277097FOSTER UNIT 4HNov 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-277099FOSTER UNIT 6HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-277099FOSTER UNIT 6HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277099FOSTER UNIT 6HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277099FOSTER UNIT 6HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277099FOSTER UNIT 6HNov 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-277099FOSTER UNIT 6HNov 2025TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-277099FOSTER UNIT 6HNov 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-277100FOSTER UNIT 2HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-277100FOSTER UNIT 2HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277100FOSTER UNIT 2HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277100FOSTER UNIT 2HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277100FOSTER UNIT 2HNov 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-277100FOSTER UNIT 2HNov 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-277121FOSTER UNIT 3HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-277121FOSTER UNIT 3HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277121FOSTER UNIT 3HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277121FOSTER UNIT 3HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277121FOSTER UNIT 3HNov 2025ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-277121FOSTER UNIT 3HNov 2025TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-277121FOSTER UNIT 3HNov 2025DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY