May B Unit

Oil & Gas Property in Karnes County, TX

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

Map of Wells Full Screen Map 3-D Map

Property Summary

Key data points for May B Unit

CountyKarnes County, TX
OperatorMARATHON OIL EF LLC
Production DatesDec 2012 - Mar 2026
Total Oil Production4,763,676 BBLs
Total Gas Production34,797,416 MCF
Recent Oil Production4,651 BBLs in Feb 2026
Recent Gas Production28,663 MCF in Feb 2026
Wells on Property27

Our Valuation Estimates for May B Unit

ShaleAssessment™

$900,912 *

MarketMultiple™

$788,343 **

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

Based on a decimal interest

May B 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 May B Unit
from Dec 2012 to Mar 2026

Wells on May B 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
42-255-32811MAY B UNIT 1HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.776403-97.960048
42-255-33505MAY B UNIT 2HMARATHON OIL EF LLCProducingKarnes County, TX28.783317-97.962081
42-255-33518MAY B UNIT 5HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.783364-97.961803
42-255-33519MAY B UNIT 4HMARATHON OIL EF LLCProducingKarnes County, TX28.783348-97.961895
42-255-33523MAY B UNIT 3HMARATHON OIL EF LLCProducingKarnes County, TX28.783334-97.961989
42-255-34012MAY B UNIT AC 1HMARATHON OIL EF LLCProducingKarnes County, TX28.783856-97.962198
42-255-34013MAY B UNIT AC 2HMARATHON OIL EF LLCHorizontal Well Surface LocatioKarnes County, TX28.783889-97.962014
42-255-34027MAY B UNIT 6HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.783873-97.962106
42-255-34028MAY B UNIT 7HMARATHON OIL EF LLCProducingKarnes County, TX28.783903-97.961923
42-255-34359MAY B UNIT AC 2HRMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.783857-97.962304
42-255-34660MAY B UNIT AC 3HMARATHON OIL EF LLCProducingKarnes County, TX28.782303-97.962020
42-255-34662MAY B UNIT AC 4HMARATHON OIL EF LLCProducingKarnes County, TX28.782334-97.961837
42-255-34663MAY B UNIT 8HMARATHON OIL EF LLCProducingKarnes County, TX28.782320-97.961928
42-255-34664MAY B UNIT 9HMARATHON OIL EF LLCProducingKarnes County, TX28.782350-97.961745
42-255-35132MAY B UNIT 27HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.778978-97.947345
42-255-35133MAY B UNIT 26HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.778948-97.947433
42-255-35134MAY B UNIT 24HMARATHON OIL EF LLCProducingKarnes County, TX28.778920-97.947520
42-255-35135MAY B UNIT 23HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.778600-97.947414
42-255-35136MAY B UNIT AC 24HMARATHON OIL EF LLCProducingKarnes County, TX28.778890-97.947606
42-255-35625MAY B UNIT 18HMARATHON OIL EF LLCProducingKarnes County, TX28.777754-97.950881
42-255-35626MAY B UNIT 21HMARATHON OIL EF LLCProducingKarnes County, TX28.777781-97.950795
42-255-35627MAY B UNIT 22HMARATHON OIL EF LLCProducingKarnes County, TX28.777812-97.950706
42-255-35628MAY B UNIT 25HMARATHON OIL EF LLCProducingKarnes County, TX28.777840-97.950620
42-255-35638MAY B UNIT 13HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.776625-97.952450
42-255-35639MAY B UNIT 16HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.776915-97.952642
42-255-35640MAY B UNIT 17HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.776966-97.952563
42-255-35641MAY B UNIT AC 22HMARATHON OIL EF LLCTemp AbandonedKarnes County, TX28.777001-97.952450

Leases included in May B Unit

Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
02-270327MAY B UNIT 1HMARATHON OIL EF LLCKarnes County, TX
02-272525MAY B UNIT 3HMARATHON OIL EF LLCKarnes County, TX
02-272778MAY B UNIT 2HMARATHON OIL EF LLCKarnes County, TX
02-272779MAY B UNIT 5HMARATHON OIL EF LLCKarnes County, TX
02-273487MAY B UNIT 4HMARATHON OIL EF LLCKarnes County, TX
02-277101MAY B UNIT 7HMARATHON OIL EF LLCKarnes County, TX
02-277566MAY B UNIT AC 2HRMARATHON OIL EF LLCKarnes County, TX
02-277623MAY B UNIT 6HMARATHON OIL EF LLCKarnes County, TX
02-279244MAY B UNIT AC 1HMARATHON OIL EF LLCKarnes County, TX
02-279559MAY B UNIT 9HMARATHON OIL EF LLCKarnes County, TX
02-279630MAY B UNIT 8HMARATHON OIL EF LLCKarnes County, TX
02-280084MAY B UNIT AC 4HMARATHON OIL EF LLCKarnes County, TX
02-280394MAY B UNIT AC 3HMARATHON OIL EF LLCKarnes County, TX
02-283249MAY B UNIT 26HMARATHON OIL EF LLCKarnes County, TX
02-283250MAY B UNIT 27HMARATHON OIL EF LLCKarnes County, TX
02-283429MAY B UNIT 24HMARATHON OIL EF LLCKarnes County, TX
02-283516MAY B UNIT AC 24HMARATHON OIL EF LLCKarnes County, TX
02-284047MAY B UNIT 23HMARATHON OIL EF LLCKarnes County, TX
02-284535MAY B UNIT 18HMARATHON OIL EF LLCKarnes County, TX
02-284536MAY B UNIT 21HMARATHON OIL EF LLCKarnes County, TX
02-284540MAY B UNIT 22HMARATHON OIL EF LLCKarnes County, TX
02-284541MAY B UNIT 25HMARATHON OIL EF LLCKarnes County, TX
02-284871MAY B UNIT AC 22HMARATHON OIL EF LLCKarnes County, TX
02-284883MAY B UNIT 16HMARATHON OIL EF LLCKarnes County, TX
02-284987MAY B UNIT 17HMARATHON OIL EF LLCKarnes County, TX
02-285056MAY B UNIT 13HMARATHON OIL EF LLCKarnes County, TX

Nearby Properties

These are the closest 20 properties to the May B Unit property.

Property NameLocationOil Prod.Gas Prod.Prod. Period
Bailey-Retzloff UnitKarnes County, TX4,662 BBLs31,210 MCFMar 2026
Direct Assets UnitKarnes County, TX2,706 BBLs17,439 MCFMar 2026
Direct-Robert-Gross Sa 1HKarnes County, TX1,570 BBLs7,268 MCFMar 2026
Easley UnitKarnes County, TX12,002 BBLs198,475 MCFMar 2026
Easley-Hollman Unit PsaKarnes County, TX321 BBLs1,258 MCFMar 2026
Forshage-Howell UnitKarnes County, TX1,002 BBLs5,733 MCFMar 2026
Franke-Foster-Patino Sa1Karnes County, TX1,216 BBLs17,105 MCFMar 2026
Franke-JohnsonKarnes County, TX5,989 BBLs104,033 MCFMar 2026
Fransen-Direct Assets SaKarnes County, TX14,805 BBLs54,994 MCFMar 2026
HollmanKarnes County, TX6,526 BBLs33,327 MCFMar 2026
Janssen Gas Unit 1Karnes County, TX199 BBLs3,230 MCFMar 2026
Johnson-Tschirhart UnitKarnes County, TX39,387 BBLs390,963 MCFMar 2026
Kraner UnitKarnes County, TX958 BBLs15,586 MCFMar 2026
L.B. HaileyKarnes County, TX2,951 BBLs22,337 MCFMar 2026
Luna UnitKarnes County, TX4,319 BBLs17,854 MCFMar 2026
Morgan UnitKarnes County, TX6,030 BBLs17,905 MCFMar 2026
Patino UnitKarnes County, TX6,357 BBLs97,297 MCFMar 2026
Patino-Franke Unit Sa1 1HKarnes County, TX4,448 BBLs81,581 MCFMar 2026
Regmund Family Trust Gas Unit 1Karnes County, TX602 BBLs18,997 MCFMar 2026
Robert Bowman UnitKarnes County, TX1,976 BBLs4,399 MCFMar 2026

Companies in the Area

These are the closest 20 companies operating near the May B Unit property.

Company Name
Blackbrush O & G, LLC
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.
North American Royalties, Inc.
Parker & Parsley Development Co.
Pioneer Natural Res. USA, Inc.
Plains Exploration & Prod. Co.
Repsol Oil & Gas USA, LLC
Rosewood Resources Inc
Statoil Texas Onshore Prop LLC
Texas Crude Energy, Inc.
Texstar North America, Inc.
Warwick-Artemis, LLC

Frac'ing activity on May B Unit

API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
42-255-32811May B 1H
42-255-33505May B 2H
42-255-33518May B 5H
42-255-33519May B 4H
42-255-33523May B 3H
42-255-34012May B Unit AC 1H
42-255-34027May B Unit 6H
42-255-34028May B Unit 7H
42-255-34359May B Unit AC 2HR
42-255-34660May B Unit AC 3H
42-255-34662May B Unit AC 4H
42-255-34663May B 8H
42-255-34664May B 9H
42-255-35132May B 27H
42-255-35133May B 26H
42-255-35134May B 24H
42-255-35135May B 23H
42-255-35136May B AC 24H
42-255-35625May B 18H
42-255-35626May B 21H
42-255-35627May B 22H
42-255-35628May B 25H
42-255-35638May B 13H
42-255-35639May B 16H
42-255-35640May B 17H
42-255-35641May B AC 22H

Owners of May B Unit

Royalty Ownership data is obtained from public records
YearOwnerProperty NameOperatorPercentageInterest TypeAppraisal ValueLegal Desciption
2025MARATHON OIL EF LLCMAY B UNIT W#27HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCMAY B UNIT W#4HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCMAY B UNIT W#17HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCMAY B UNIT W#13HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCMAY B UNIT W#22HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCMAY B UNIT AC W#1HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCMAY B UNIT W#18HMARATHON OIL EF LLC
2025MARATHON OIL EF LLCMAY B UNIT W#21HMARATHON OIL EF LLC
Displaying 8 of 740 Owners   --   Full Ownership Data Available for Subscribers Only

Oil & Gas Sales on May B Unit

Lease #Lease NameReporting PeriodProductVolumeValueGross PricePurchaserProducer
Lease #Lease NameReporting PeriodProductOil VolumeOil ValueCalculated Oil PricePurchaserProducer
02-272525MAY B UNIT 3HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-272525MAY B UNIT 3HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-272525MAY B UNIT 3HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-272525MAY B UNIT 3HFeb 2026ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-272525MAY B UNIT 3HFeb 2026TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-272525MAY B UNIT 3HFeb 2026DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-272778MAY B UNIT 2HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-272778MAY B UNIT 2HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-272778MAY B UNIT 2HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-272778MAY B UNIT 2HFeb 2026ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-272778MAY B UNIT 2HFeb 2026TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-272778MAY B UNIT 2HFeb 2026DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-273487MAY B UNIT 4HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-273487MAY B UNIT 4HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-273487MAY B UNIT 4HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-273487MAY B UNIT 4HFeb 2026ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-273487MAY B UNIT 4HFeb 2026TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-273487MAY B UNIT 4HFeb 2026DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-277101MAY B UNIT 7HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277101MAY B UNIT 7HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277101MAY B UNIT 7HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY
02-277101MAY B UNIT 7HFeb 2026ENERFIN AGUA DULCE LPCONOCOPHILLIPS COMPANY
02-277101MAY B UNIT 7HFeb 2026TARGA MIDSTREAM SERVICES LLCCONOCOPHILLIPS COMPANY
02-277101MAY B UNIT 7HFeb 2026DCP OPERATING COMPANY, LPCONOCOPHILLIPS COMPANY
02-277623MAY B UNIT 6HFeb 2026CONOCOPHILLIPS COMPANYCONOCOPHILLIPS COMPANY