Heffernan

Oil & Gas Property in Atascosa County, TX

  2. Texas
  3. Atascosa County, TX
  4. Oil & Gas Properties in Atascosa County, TX
  5. Heffernan Oil & Gas Property

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Property Summary

Key data points for Heffernan

CountyAtascosa County, TX
OperatorEOG RESOURCES, INC.
Production DatesJul 2013 - Nov 2025
Total Oil Production926,219 BBLs
Total Gas Production607,490 MCF
Recent Oil Production3,572 BBLs in Oct 2025
Recent Gas Production1,495 MCF in Oct 2025
Wells on Property4

Our Valuation Estimates for Heffernan

ShaleAssessment™

$113,053 *

MarketMultiple™

$221,894 **

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

Based on a decimal interest

Heffernan Production Graph

Aggregated production of all wells and leases associated with this property
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to oil and gas production for Heffernan
from Jul 2013 to Nov 2025

Wells on Heffernan

API #Well NameOperatorStatusCountyEst. Daily Oil Prod.Est. Daily Gas Prod.Est. Daily Water Prod.LatitudeLongitude
42-013-34681HEFFERNAN A UNIT 1HEOG RESOURCES, INC.ProducingAtascosa County, TX28.814634-98.504917
42-013-34688HEFFERNAN A UNIT 2HEOG RESOURCES, INC.ProducingAtascosa County, TX28.814645-98.504809
42-013-34725HEFFERNAN B UNIT 4HEOG RESOURCES, INC.ProducingAtascosa County, TX28.796022-98.506953
42-013-34727HEFFERNAN B UNIT 3HEOG RESOURCES, INC.ProducingAtascosa County, TX28.796035-98.506847

Leases included in Heffernan

Lease #Lease NameOperatorCountyMonthly Oil Prod.Monthly Gas Prod.
01-17001HEFFERNAN A UNITEOG RESOURCES, INC.Atascosa County, TX
01-17113HEFFERNAN B UNITEOG RESOURCES, INC.Atascosa County, TX

Nearby Properties

These are the closest 20 properties to the Heffernan property.

Property NameLocationOil Prod.Gas Prod.Prod. Period
Ahrens UnitAtascosa County, TX1,020 BBLs506 MCFNov 2025
AppaloosaAtascosa County, TX14,948 BBLs13,126 MCFNov 2025
Atascosa 601 UnitAtascosa County, TX599 BBLs754 MCFNov 2025
Beltran UnitAtascosa County, TX460 BBLs987 MCFNov 2025
Cap UnitAtascosa County, TX5,526 BBLs5,542 MCFNov 2025
Ferdinand UnitAtascosa County, TX562 BBLs85 MCFNov 2025
HirschAtascosa County, TX836 BBLs1,226 MCFNov 2025
Hobart UnitAtascosa County, TX972 BBLs477 MCFNov 2025
Janice UnitAtascosa County, TX536 BBLs461 MCFNov 2025
Jason UnitAtascosa County, TX6,975 BBLs7,415 MCFNov 2025
Massaro UnitAtascosa County, TX1,119 BBLs1,129 MCFNov 2025
Mildred UnitAtascosa County, TX616 BBLs955 MCFNov 2025
Nina UnitAtascosa County, TX713 BBLs661 MCFNov 2025
Pacheco UnitAtascosa County, TX645 BBLs703 MCFNov 2025
Seiffert UnitAtascosa County, TX296 BBLs104 MCFNov 2025
Skeeter UnitAtascosa County, TX1,422 BBLs2,761 MCFNov 2025
Tiro UnitAtascosa County, TX508 BBLs447 MCFNov 2025
Wheeler UnitAtascosa County, TX450 BBLs2,180 MCFNov 2025
Willie Nelson UnitAtascosa County, TX870 BBLs194 MCFNov 2025
Worden UnitAtascosa County, TX1,045 BBLs956 MCFNov 2025

Companies in the Area

These are the closest 20 companies operating near the Heffernan property.

Company Name
Atascosa Exploration, LLC
Atlas Eagle Ford Oper Co, LLC
Atlas Operating LLC
Bay Rock Operating Company
Brymer Contracting Incorporated
Carrizo (Eagle Ford) LLC
Cinco Oil & Gas, LLC
EOG Resources, Inc.
Exxon Corporation
Finger Oil & Gas, Inc.
Guinn Operating Company, LLC
Henry Petroleum Corp.
Mazco Energy LLC
Murphy Expl. & Prod. Co. - USA
Pearl, Bill H. Productions, Inc.
Pillar Efs, LLC
Rosewood Resources Inc
TD Natural Resources LLC
Texas American Resources Company
Trailblazer Energy Resources, LLC

Frac'ing activity on Heffernan

API #Well NameStart DateEnd DateVertical DepthTotal Water Volume
42-013-34681HEFFERNAN A UNIT # 1H
42-013-34688HEFFERNAN A UNIT # 2H
42-013-34725HEFFERNAN B UNIT # 4H
42-013-34727HEFFERNAN B UNIT # 3H

Owners of Heffernan

Royalty Ownership data is obtained from public records
YearOwnerProperty NameOperatorPercentageInterest TypeAppraisal ValueLegal Desciption
2025EOG RESOURCES INCHEFFERNAN B UNITEOG RESOURCES, INC.
2025MARSHALL LIVING TRUSTHEFFERNAN B UNITEOG RESOURCES, INC.
2025HEFFERNAN GLENNHEFFERNAN B UNITEOG RESOURCES, INC.
2025MEADE JAMES G & IRMA LHEFFERNAN B UNITEOG RESOURCES, INC.
2025FREEHOLD ROYALTIES (USA) INCHEFFERNAN B UNITEOG RESOURCES, INC.
2025EOG RESOURCES INCHEFFERNAN A UNITEOG RESOURCES, INC.
2025THIELE OTTO M JRHEFFERNAN B UNITEOG RESOURCES, INC.
2025MICKLER BETTY MADGEHEFFERNAN B UNITEOG RESOURCES, INC.
Displaying 8 of 104 Owners   --   Full Ownership Data Available for Subscribers Only

Oil & Gas Sales on Heffernan

Lease #Lease NameReporting PeriodProductVolumeValueGross PricePurchaserProducer
Lease #Lease NameReporting PeriodProductOil VolumeOil ValueCalculated Oil PricePurchaserProducer
01-17001HEFFERNAN A UNITDec 2025EOG RESOURCES MARKETING LLCEOG RESOURCES, INC.
01-17113HEFFERNAN B UNITDec 2025EOG RESOURCES MARKETING LLCEOG RESOURCES, INC.
01-17113HEFFERNAN B UNITNov 2025EOG RESOURCES MARKETING LLCEOG RESOURCES, INC.
01-17001HEFFERNAN A UNITNov 2025EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITNov 2025EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITNov 2025EOG RESOURCES, INC.EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITNov 2025EOG RESOURCES MARKETING LLCEOG RESOURCES, INC.
01-17113HEFFERNAN B UNITNov 2025EOG RESOURCES, INC.EOG RESOURCES, INC.
01-17113HEFFERNAN B UNITOct 2025EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITOct 2025EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITOct 2025EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITOct 2025EOG RESOURCES MARKETING LLCEOG RESOURCES, INC.
01-17113HEFFERNAN B UNITOct 2025EOG RESOURCES MARKETING LLCEOG RESOURCES, INC.
01-17113HEFFERNAN B UNITOct 2025EOG RESOURCES, INC.EOG RESOURCES, INC.
01-17113HEFFERNAN B UNITOct 2025EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITOct 2025EOG RESOURCES, INC.EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITSep 2025EOG RESOURCES MARKETING LLCEOG RESOURCES, INC.
01-17001HEFFERNAN A UNITSep 2025EOG RESOURCES, INC.EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITSep 2025EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITSep 2025EOG RESOURCES, INC.
01-17113HEFFERNAN B UNITSep 2025EOG RESOURCES, INC.
01-17113HEFFERNAN B UNITSep 2025EOG RESOURCES MARKETING LLCEOG RESOURCES, INC.
01-17113HEFFERNAN B UNITSep 2025EOG RESOURCES, INC.EOG RESOURCES, INC.
01-17113HEFFERNAN B UNITSep 2025EOG RESOURCES, INC.
01-17001HEFFERNAN A UNITAug 2025EOG RESOURCES, INC.