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 - Jan 2026
Total Oil Production3,038,680 BBLs
Total Gas Production12,067,751 MCF
Recent Oil Production5,917 BBLs in Dec 2025
Recent Gas Production14,764 MCF in Dec 2025
Wells on Property14

Our Valuation Estimates for Sienkiewicz Unit

ShaleAssessment™

$228,880 *

MarketMultiple™

$742,679 **

* 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 Jan 2026

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, TX0 BBLs0 MCFNov 2025
Barboza UnitKarnes County, TX4,023 BBLs27,404 MCFJan 2026
Blackjack UnitKarnes County, TX2,775 BBLs8,710 MCFJan 2026
Chapman RogersKarnes County, TX666 BBLs2,485 MCFJan 2026
Crews A-Love Ulw AKarnes County, TX5,105 BBLs14,344 MCFJan 2026
Crews Quad Ulw BKarnes County, TX10,850 BBLs32,794 MCFJan 2026
Crews UnitKarnes County, TX36,327 BBLs128,080 MCFJan 2026
Hemby UnitKarnes County, TX6,803 BBLs52,731 MCFJan 2026
Kosub UnitKarnes County, TX9,637 BBLs68,713 MCFJan 2026
Kotara-Ridley UnitKarnes County, TX6,177 BBLs49,523 MCFJan 2026
L.B. Hailey UnitKarnes County, TX12,985 BBLs146,375 MCFJan 2026
Love UnitKarnes County, TX2,824 BBLs14,434 MCFJan 2026
Love-SienkiewiczKarnes County, TX8,947 BBLs45,783 MCFJan 2026
McAlisterKarnes County, TX8,892 BBLs73,972 MCFJan 2026
McElveen Unit AKarnes County, TX28,707 BBLs76,097 MCFFeb 2026
Murphy-KotaraKarnes County, TX1,883 BBLs8,656 MCFJan 2026
SchulteKarnes County, TX20,406 BBLs77,001 MCFJan 2026
Schulte-Bailey Usw A 1Karnes County, TX31,376 BBLs108,820 MCFFeb 2026
Schulte-McElveen UswKarnes County, TX87,795 BBLs281,057 MCFFeb 2026
Witte, Inc. Unit AKarnes County, TX5,911 BBLs25,990 MCFJan 2026

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.
Falcon Production LLC
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
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 UNITDec 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10797SIENKIEWICZ UNITNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-10797SIENKIEWICZ UNITNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-10797SIENKIEWICZ UNITNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-268782SIENKIEWICZ UNIT 5HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-268782SIENKIEWICZ UNIT 5HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-268782SIENKIEWICZ UNIT 5HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-279741SIENKIEWICZ UNIT AC 9HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-279741SIENKIEWICZ UNIT AC 9HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-279741SIENKIEWICZ UNIT AC 9HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-283163SIENKIEWICZ UNIT AC 2HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-283163SIENKIEWICZ UNIT AC 2HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-283163SIENKIEWICZ UNIT AC 2HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-283164SIENKIEWICZ UNIT AC 3HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-283164SIENKIEWICZ UNIT AC 3HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-283164SIENKIEWICZ UNIT AC 3HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-283778SIENKIEWICZ UNIT 504HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-283778SIENKIEWICZ UNIT 504HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-283778SIENKIEWICZ UNIT 504HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-284097SIENKIEWICZ UNIT 7HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-284097SIENKIEWICZ UNIT 7HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-284097SIENKIEWICZ UNIT 7HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-290481SIENKIEWICZ UNIT 505HNov 2025ETC TEXAS PIPELINE, LTD.CONOCOPHILLIPS COMPANY
02-290481SIENKIEWICZ UNIT 505HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-290481SIENKIEWICZ UNIT 505HNov 2025CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY