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 - Jan 2026
Total Oil Production3,731,275 BBLs
Total Gas Production27,280,319 MCF
Recent Oil Production6,325 BBLs in Dec 2025
Recent Gas Production54,349 MCF in Dec 2025
Wells on Property27

Our Valuation Estimates for Foster Unit

ShaleAssessment™

$179,838 *

MarketMultiple™

$762,690 **

* 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 Jan 2026

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, TX4,023 BBLs27,404 MCFJan 2026
Blackjack UnitKarnes County, TX842 BBLs5,954 MCFJan 2026
Culberson-Hughes UnitKarnes County, TX1,592 BBLs2,956 MCFJan 2026
Franke JohnsonKarnes County, TX6,233 BBLs71,621 MCFJan 2026
Franke UnitKarnes County, TX15,065 BBLs77,169 MCFJan 2026
Franke-Foster-Patino Sa1Karnes County, TX1,335 BBLs20,650 MCFJan 2026
Graef Gas Unit 1Karnes County, TX4,272 BBLs46,951 MCFJan 2026
Grasshopper ThieleKarnes County, TX7,087 BBLs174,588 MCFJan 2026
Johnson-Tschirhart UnitKarnes County, TX53,101 BBLs523,231 MCFFeb 2026
Kotara-Ridley UnitKarnes County, TX6,177 BBLs49,523 MCFJan 2026
L.B. Hailey UnitKarnes County, TX12,985 BBLs146,375 MCFJan 2026
May Unit 1Karnes County, TX8,605 BBLs30,449 MCFJan 2026
McAlisterKarnes County, TX8,892 BBLs73,972 MCFJan 2026
Murphy-KotaraKarnes County, TX1,883 BBLs8,656 MCFJan 2026
Murphy-Sinclair UnitKarnes County, TX4,853 BBLs30,291 MCFJan 2026
Patino UnitKarnes County, TX13,056 BBLs142,579 MCFJan 2026
Patino-Franke Unit Sa1 1HKarnes County, TX5,887 BBLs69,515 MCFJan 2026
Rogers-Foester UnitKarnes County, TX768 BBLs12,859 MCFJan 2026
Urrutia UnitKarnes County, TX1,479 BBLs3,055 MCFJan 2026
Willbern-Buegeler Unit 1HKarnes County, TX342 BBLs4,661 MCFJan 2026

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.
Falcon Production LLC
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.
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