Block E. Heirs

Oil & Gas Property in Starr County, TX

Property Summary

Key data points for Block E. Heirs

CountyStarr County, TX
Production DatesJan 1993 - Jan 2026
Total Oil Production36,560 BBLs
Total Gas Production581,613 MCF
Recent Oil Production20 BBLs in Dec 2025
Recent Gas Production0 MCF in Dec 2025
Wells on Property4

Our Valuation Estimates for Block E. Heirs

ShaleAssessment

$2,381 *

MarketMultiple

$2,628 **

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

Based on a decimal interest

Block E. Heirs Production Graph

Aggregated production of all wells and leases associated with this property
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to oil and gas production for Block E. Heirs
from Jan 1993 to Jan 2026

Wells on Block E. Heirs

API #Well NameOperatorStatusCountyEst. Daily Oil Prod.Est. Daily Gas Prod.Est. Daily Water Prod.LatitudeLongitude
42-427-00896BLOCK, E., HEIRS 1Plugged Oil/Gas WellStarr County, TX26.675778-98.526177
42-427-00898BLOCK, E., HEIRS -B- 1EXXON CORP.Plugged Gas WellStarr County, TX26.690444-98.538403
42-427-31393BLOCK, E. HEIRS "B" 2EXXON CORP.Plugged Gas WellStarr County, TX26.688538-98.541370
42-427-33060BLOCK E. HEIRS B 4OSBORN,W.B. OIL & GAS OPERATIONSProducingStarr County, TX26.696586-98.533396

Leases included in Block E. Heirs

Lease #Lease NameOperatorCountyMonthly Oil Prod.
04-014492BLOCK, E., HEIRS -B- 1EXXON CORP.Starr County, TX
04-03063BLOCK, E., HEIRSHUMBLE OIL & REFINING CO.Starr County, TX
04-088284BLOCK, E. HEIRS "B" 2EXXON CORP.Starr County, TX
04-14238BLOCK, E. HEIRS "B"OSBORN,W.B. OIL & GAS OPERATIONSStarr County, TX
04-163762BLOCK, E. HEIRS "B" 2OSBORN,W.B. OIL & GAS OPERATIONSStarr County, TX
04-167516BLOCK E. HEIRS B 4OSBORN,W.B. OIL & GAS OPERATIONSStarr County, TX

Operators Associated With Block E. Heirs

Nearby Properties

These are the closest 20 properties to the Block E. Heirs property.

Property NameLocationOil Prod.Gas Prod.Prod. Period
Amanda McKinneyStarr County, TX225 BBLs1,948 MCFJan 2026
C.M. Hall A 2Starr County, TX20 BBLs4,659 MCFJan 2026
De GarzaStarr County, TX0 BBLs0 MCFMar 2021
De Lopez C.VStarr County, TX0 BBLs0 MCFJan 2024
Emma Pena Gas UnitStarr County, TX30 BBLs8,537 MCFJan 2026
Garza-Montalvo Gas UnitStarr County, TX6 BBLs1,055 MCFJan 2026
Geo. H. SpeerStarr County, TX32 BBLs8,070 MCFJan 2026
HallStarr County, TX40 BBLs16,123 MCFJan 2026
Hall J.F. StateStarr County, TX2,046 BBLs20,152 MCFJan 2026
I.V. MontalvoStarr County, TX185 BBLs7,201 MCFJan 2026
LaurelStarr County, TX0 BBLs0 MCFOct 2025
LaurelStarr County, TX17 BBLs1,323 MCFJan 2026
McKinney AStarr County, TX0 BBLs0 MCFApr 2025
MontalvoStarr County, TX445 BBLs698 MCFJan 2026
N.R. MontalvoStarr County, TX0 BBLs0 MCFMay 2020
Olivares AStarr County, TX33 BBLs13,229 MCFJan 2026
PenaStarr County, TX0 BBLs0 MCFApr 2006
SaenzStarr County, TX0 BBLs0 MCFOct 2025
Saenz, VIStarr County, TX0 BBLs0 MCFAug 2023
Speer GeoStarr County, TX49 BBLs9,840 MCFJan 2026

Oil & Gas Sales on Block E. Heirs

Lease #Lease NameReporting PeriodProductVolumeValueGross PricePurchaserProducer
Lease #Lease NameReporting PeriodProductOil VolumeOil ValueCalculated Oil PricePurchaserProducer
04-14238BLOCK, E. HEIRS "B"Dec 2025GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-14238BLOCK, E. HEIRS "B"Apr 2025GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-14238BLOCK, E. HEIRS "B"Sep 2024GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Mar 2024GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Aug 2023GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Feb 2023GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Jun 2022GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Dec 2021GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Dec 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Nov 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Oct 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Sep 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Jul 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Jun 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2May 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2May 2021GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Apr 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Mar 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Feb 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Jan 2021ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Dec 2020ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Nov 2020ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Oct 2020GULFMARK ENERGY, INC.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Oct 2020ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS
04-163762BLOCK, E. HEIRS "B" 2Sep 2020ENTERPRISE HYDROCARBONS L.P.W B OSBORN OIL & GAS OPERATIONS