Sienkiewicz Unit

Oil & Gas Property in Karnes County, TX

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

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Property Summary

Key data points for Sienkiewicz Unit

CountyKarnes County, TX
OperatorMARATHON OIL EF LLC
Production DatesNov 2012 - Oct 2025
Total Oil Production3,021,683 BBLs
Total Gas Production12,024,181 MCF
Recent Oil Production6,141 BBLs in Sep 2025
Recent Gas Production28,169 MCF in Sep 2025
Wells on Property14

Our Valuation Estimates for Sienkiewicz Unit

ShaleAssessment™

$238,870 *

MarketMultiple™

$726,770 **

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

Based on a decimal interest

Sienkiewicz 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 Sienkiewicz Unit
from Nov 2012 to Oct 2025

Wells on Sienkiewicz 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
42-255-32446SIENKIEWICZ UNIT 2HMARATHON OIL EF LLCProducingKarnes County, TX28.829254-97.899684
42-255-32509SIENKIEWICZ UNIT 3HMARATHON OIL EF LLCProducingKarnes County, TX28.830158-97.900145
42-255-32547SIENKIEWICZ UNIT 6HMARATHON OIL EF LLCProducingKarnes County, TX28.828022-97.898681
42-255-32575SIENKIEWICZ UNIT 5HMARATHON OIL EF LLCProducingKarnes County, TX28.846840-97.900407
42-255-34062SIENKIEWICZ UNIT 11HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.837530-97.907895
42-255-34063SIENKIEWICZ UNIT 503HMARATHON OIL EF LLCProducingKarnes County, TX28.837583-97.907823
42-255-34065SIENKIEWICZ UNIT 10HMARATHON OIL EF LLCProducingKarnes County, TX28.837689-97.907680
42-255-34076SIENKIEWICZ UNIT AC 9HMARATHON OIL EF LLCProducingKarnes County, TX28.837636-97.907752
42-255-34737SIENKIEWICZ UNIT 505HMARATHON OIL EF LLCProducingKarnes County, TX28.845608-97.900494
42-255-34738SIENKIEWICZ UNIT AC 2HMARATHON OIL EF LLCProducingKarnes County, TX28.845599-97.900684
42-255-34739SIENKIEWICZ UNIT 4HMARATHON OIL EF LLCProducingKarnes County, TX28.845603-97.900590
42-255-34740SIENKIEWICZ UNIT 504HMARATHON OIL EF LLCProducingKarnes County, TX28.845592-97.900775
42-255-34794SIENKIEWICZ UNIT AC 3HMARATHON OIL EF LLCProducingKarnes County, TX28.845586-97.900872
42-255-34795SIENKIEWICZ UNIT 7HMARATHON OIL EF LLCProducingKarnes County, TX28.845579-97.900966

Leases included in Sienkiewicz Unit

Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
02-10797SIENKIEWICZ UNITMARATHON OIL EF LLCKarnes County, TX
02-266858SIENKIEWICZ UNIT 6HMARATHON OIL EF LLCKarnes County, TX
02-266879SIENKIEWICZ UNIT 3HMARATHON OIL EF LLCKarnes County, TX
02-268733SIENKIEWICZ UNIT 2HMARATHON OIL EF LLCKarnes County, TX
02-268782SIENKIEWICZ UNIT 5HMARATHON OIL EF LLCKarnes County, TX
02-277548SIENKIEWICZ UNIT 11HMARATHON OIL EF LLCKarnes County, TX
02-279741SIENKIEWICZ UNIT AC 9HMARATHON OIL EF LLCKarnes County, TX
02-283163SIENKIEWICZ UNIT AC 2HMARATHON OIL EF LLCKarnes County, TX
02-283164SIENKIEWICZ UNIT AC 3HMARATHON OIL EF LLCKarnes County, TX
02-283778SIENKIEWICZ UNIT 504HMARATHON OIL EF LLCKarnes County, TX
02-284097SIENKIEWICZ UNIT 7HMARATHON OIL EF LLCKarnes County, TX
02-290481SIENKIEWICZ UNIT 505HMARATHON OIL EF LLCKarnes County, TX
02-290538SIENKIEWICZ UNIT 4HMARATHON OIL EF LLCKarnes County, TX

Nearby Properties

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

Property NameLocationOil Prod.Gas Prod.Prod. Period
Bailey Unit AKarnes County, TX1,239 BBLs2,842 MCFOct 2025
Barboza UnitKarnes County, TX7,201 BBLs54,558 MCFOct 2025
Blackjack UnitKarnes County, TX248 BBLs1,892 MCFOct 2025
Chapman RogersKarnes County, TX1,588 BBLs4,388 MCFOct 2025
Coleman-Gross Usw AKarnes County, TX7,261 BBLs32,751 MCFOct 2025
Crews A-Love Ulw AKarnes County, TX14,464 BBLs50,462 MCFOct 2025
Crews UnitKarnes County, TX71,599 BBLs246,458 MCFOct 2025
Egbert-Miller UnitKarnes County, TX196 BBLs410 MCFOct 2025
Hemby UnitKarnes County, TX5,578 BBLs40,628 MCFOct 2025
Kosub UnitKarnes County, TX10,646 BBLs74,317 MCFOct 2025
Kotara-Ridley UnitKarnes County, TX5,635 BBLs40,772 MCFOct 2025
L.B. Hailey UnitKarnes County, TX12,672 BBLs162,796 MCFOct 2025
Love UnitKarnes County, TX4,274 BBLs17,158 MCFOct 2025
Love-SienkiewiczKarnes County, TX3,779 BBLs34,462 MCFOct 2025
McAlisterKarnes County, TX8,869 BBLs85,314 MCFOct 2025
McElveen Unit AKarnes County, TX0 BBLs0 MCFNov 2025
Murphy-KotaraKarnes County, TX1,904 BBLs9,578 MCFOct 2025
SchulteKarnes County, TX332 BBLs2,856 MCFOct 2025
Witte Quad Usw BKarnes County, TX13,601 BBLs61,755 MCFOct 2025
Witte, Inc. Unit AKarnes County, TX2,861 BBLs9,493 MCFOct 2025

Companies in the Area

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

Company Name
1776 Energy Operators, LLC
Blackbrush O & G, LLC
Burlington Resources Oil & Gas Company LP
Devon Energy Production Company, L.P.
Encana Oil & Gas (USA) Inc.
Goldking Prod. Co.
Gulftex Energy, LLC
Hilcorp Energy Company
Jones, Edwin M. Oil Co.
Marathon Oil Ef LLC
Ovintiv USA Inc.
Paloma Resources, LLC
Pioneer Natural Res. USA, Inc.
Plains Exploration & Prod. Co.
Repsol Oil & Gas USA, LLC
Rising Star Energy, L.L.C.
Statoil Texas Onshore Prop LLC
Texstar North America, Inc.
Tidal Petroleum, Inc.
Warwick-Artemis, LLC

Frac'ing activity on Sienkiewicz Unit

API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
42-255-32446Sienkiewicz 2H
42-255-32509Sienkiewicz 3H
42-255-32547Sienkiewicz 6H
42-255-32575Sienkiewicz #5H
42-255-34062Sienkiewicz AC 11H
42-255-34063Sienkiewicz 503H
42-255-34065Sienkiewicz 10H
42-255-34076Sienkiewicz AC 9H
42-255-34737Sienkiewicz Unit 505H
42-255-34738Sienkiewicz Unit AC 2H
42-255-34739Sienkiewicz Unit 4H
42-255-34740Sienkiewicz Unit 504H
42-255-34794Sienkiewicz Unit AC 3H
42-255-34795Sienkiewicz Unit 7H

Owners of Sienkiewicz Unit

Royalty Ownership data is obtained from public records
YearOwnerProperty NameOperatorPercentageInterest TypeAppraisal ValueLegal Desciption
2025MARATHON OIL EF LLCSIENKIEWICZ UNIT W#505HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCSIENKIEWICZ UNIT AC W#9HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCSIENKIEWICZ UNIT W#504HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCSIENKIEWICZ UNIT AC W#3HMARATHON OIL EF LLC
2025BEAN INVESTMENTS LTDSIENKIEWICZ UNIT W#505HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCSIENKIEWICZ UNIT W#4HMARATHON OIL EF LLC
2025FREEHOLD ROYALTIES USA INCSIENKIEWICZ UNIT W#505HMARATHON OIL EF LLC
2025AMBER HARVEST LLCSIENKIEWICZ UNIT W#505HMARATHON OIL EF LLC
Displaying 8 of 525 Owners   --   Full Ownership Data Available for Subscribers Only

Oil & Gas Sales on Sienkiewicz Unit

Lease #Lease NameReporting PeriodProductVolumeValueGross PricePurchaserProducer
Lease #Lease NameReporting PeriodProductOil VolumeOil ValueCalculated Oil PricePurchaserProducer
02-10797SIENKIEWICZ UNITApr 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10797SIENKIEWICZ UNITMar 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-10797SIENKIEWICZ UNITMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10797SIENKIEWICZ UNITMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-268782SIENKIEWICZ UNIT 5HMar 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-268782SIENKIEWICZ UNIT 5HMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-268782SIENKIEWICZ UNIT 5HMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-279741SIENKIEWICZ UNIT AC 9HMar 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-279741SIENKIEWICZ UNIT AC 9HMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-283163SIENKIEWICZ UNIT AC 2HMar 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-283163SIENKIEWICZ UNIT AC 2HMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-283164SIENKIEWICZ UNIT AC 3HMar 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-283164SIENKIEWICZ UNIT AC 3HMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-283778SIENKIEWICZ UNIT 504HMar 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-283778SIENKIEWICZ UNIT 504HMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-284097SIENKIEWICZ UNIT 7HMar 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-284097SIENKIEWICZ UNIT 7HMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-290481SIENKIEWICZ UNIT 505HMar 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-290481SIENKIEWICZ UNIT 505HMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-290538SIENKIEWICZ UNIT 4HMar 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-290538SIENKIEWICZ UNIT 4HMar 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10797SIENKIEWICZ UNITFeb 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC
02-10797SIENKIEWICZ UNITFeb 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-10797SIENKIEWICZ UNITFeb 2025MARATHON OIL EF LLCMARATHON OIL EF LLC
02-268782SIENKIEWICZ UNIT 5HFeb 2025ETC TEXAS PIPELINE, LTD.MARATHON OIL EF LLC