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 - Jan 2026
Total Oil Production929,119 BBLs
Total Gas Production608,397 MCF
Recent Oil Production629 BBLs in Dec 2025
Recent Gas Production184 MCF in Dec 2025
Wells on Property4

Our Valuation Estimates for Heffernan

ShaleAssessment™

$110,484 *

MarketMultiple™

$186,742 **

* 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 Jan 2026

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, TX745 BBLs1,300 MCFJan 2026
AppaloosaAtascosa County, TX14,432 BBLs18,266 MCFJan 2026
Atascosa 601 UnitAtascosa County, TX562 BBLs859 MCFJan 2026
Beltran UnitAtascosa County, TX618 BBLs1,011 MCFJan 2026
Cap UnitAtascosa County, TX4,540 BBLs4,585 MCFJan 2026
Duren UnitAtascosa County, TX288 BBLs468 MCFJan 2026
Ernest UnitAtascosa County, TX324 BBLs138 MCFJan 2026
Ferdinand UnitAtascosa County, TX604 BBLs62 MCFJan 2026
HirschAtascosa County, TX655 BBLs1,728 MCFJan 2026
Hobart UnitAtascosa County, TX736 BBLs541 MCFJan 2026
Janice UnitAtascosa County, TX296 BBLs770 MCFJan 2026
Jason UnitAtascosa County, TX6,052 BBLs6,535 MCFJan 2026
Massaro UnitAtascosa County, TX431 BBLs828 MCFJan 2026
Nina UnitAtascosa County, TX785 BBLs697 MCFJan 2026
Pacheco UnitAtascosa County, TX692 BBLs694 MCFJan 2026
Skeeter UnitAtascosa County, TX1,480 BBLs3,219 MCFJan 2026
Stockhorst UnitAtascosa County, TX400 BBLs774 MCFJan 2026
Tiro UnitAtascosa County, TX278 BBLs278 MCFJan 2026
Wheeler UnitAtascosa County, TX298 BBLs950 MCFJan 2026
Worden UnitAtascosa County, TX794 BBLs807 MCFJan 2026

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
Burk Royalty Company
Carrizo (Eagle Ford) LLC
EOG Resources Inc
Exxon Corporation
Finger Oil & Gas, Inc.
Guinn Operating Company, LLC
Henry Petroleum Corp.
Mazco Energy LLC
Miller, W. C. Operating Company
Murphy Expl. & Prod. Co. - USA
Pearl, Bill H. Productions, Inc.
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.