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Texas oil lease

Producing

HEFFERNAN A UNIT

Heffernan A Unit is an oil lease in Atascosa County, Texas, operated by EOG Resources, Inc. in the Eagleville (Eagle Ford-1) field.

2 wells

11,897bbl oil, last 12 months+85% vs prior year
Operator
EOG Resources, Inc.
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-17001

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
8,506 mcf
Oil in Jul 2026
1,128 bbl

Production by month

Oil output rose 85% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 85% over the last 12 monthsMonthly oil production and gas for HEFFERNAN A UNIT, Aug 2023 to Jul 2026. Oil output rose 85% over the last 12 months. 11,897 bbl in the 12 months through Jul 2026, against 6,441 bbl in the 12 months before.Last 12 months: 11,897 bblbbl per monthmcf per month001,0005002,0001,0003,0001,5004,0002,0005,0002,500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 85% over the last 12 monthsMonthly oil production and gas for HEFFERNAN A UNIT, Aug 2023 to Jul 2026. Oil output rose 85% over the last 12 months. 11,897 bbl in the 12 months through Jul 2026, against 6,441 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0005002,0001,0003,0001,5004,0002,0005,0002,500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Mar 2026 the lease's gas goes to a processing plant instead of lease fuel

Flaring peaked at 23.8% of the gas in Jun 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Mar 2026 the lease's gas goes to a processing plant instead of lease fuelShare of HEFFERNAN A UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2026 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 23.8% of the gas in Jun 2024.Share of the lease’s gas by disposition code, per month0%50%100%Mar 2026: fuel to plantFlared 23.8%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Mar 2026 the lease's gas goes to a processing plant instead of lease fuelShare of HEFFERNAN A UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2026 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 23.8% of the gas in Jun 2024.Share of gas by disposition code0%50%100%Mar 26: fuel to plantFlared 23.8%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    82% · 7,000 mcf

  • Lease fuel (1)

    13% · 1,128 mcf

  • Flared (4)

    4.4% · 378 mcf

4.4% of the gas flared in the last 12 months. 32 months above 3%.

2 wells on this lease

Wells on HEFFERNAN A UNIT
API numberWell no.Status
42-013-346811HActive
42-013-346882HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Eog Resources Marketing LLCOilGathers100Apr 1, 2015–
Eog Resources, Inc.Casinghead gasBuys100Jun 22, 2013–
Williams Mlp Operating LLCCasinghead gasGathers100May 1, 2019–
Eog Resources, Inc.Casinghead gasGathers100Jun 22, 2013May 1, 2019

SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).

Who buys my oilOil price check

730.16 acres on the newest permit

Permits for Heffernan A Unit
API numberWell no.Acreson the permit
42-013-346811H730.16
42-013-346882H730.16

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

What EOG Resources, Inc. told investors it received

EOG Resources, Inc. is linked to EOG Resources, Inc. (EOG).
Realized prices reported by EOG Resources, Inc.
QuarterOil$ per bblFiling
Q2 2026$98.15SEC filing
Q1 2026$72.47SEC filing
Q3 2025$65.95SEC filing
Q2 2025$64.82SEC filing
Q1 2025$72.87SEC filing
Q3 2024$76.92SEC filing

SourceEOG Resources, Inc. quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for HEFFERNAN A UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20261,1281,2662,3632,19152$80.46$2.89
Jun 20261,3571,4381,6581,50236$84.81$3.15
May 20261,5841,4721,10891648$102.13$2.94
Apr 20262,0312,0061,07590057$100.32$2.77
Mar 202671891532025721$91.38$3.04
Feb 20264095571302113$64.51$3.62
Jan 202694285234616026$60.04$7.72
Dec 202528817687379$57.97$4.26
Nov 202572873328617927$60.06$3.79
Oct 20251,5341,71764047055$60.89$3.19
Sep 202578172734724826$63.96$2.97
Aug 20253971841461198$64.86$2.91
Jul 202517118278377$68.39$3.20
Jun 20251,5471,66266745456$68.17$3.02
May 20254544321866717$62.17$3.12
Apr 20254093641302315$63.54$3.42
Mar 20251,1581,12150137735$68.24$4.12
Feb 20257578611385715$71.53$4.19
Jan 2025135189107654$75.74$4.13
Dec 20242541921167111$70.12$3.01
Nov 202434734716410915$69.95$2.12
Oct 202462857229314635$71.99$2.20
Sep 20243133801628119$70.24$2.28
Aug 2024268187811914$76.68$1.99
Jul 20243385511197026$81.80$2.07
Jun 20242201042910$79.77$2.54
May 202413618955226$80.02$2.12
Apr 2024373199895118$85.35$1.60
Mar 202400000$81.28$1.49
Feb 202400000$77.25$1.72
Jan 202455873743236130$74.15$3.18
Dec 20231,3461,1561,8091,66658$71.90$2.52
Nov 20232,1582,2621,2311,04684$77.69$2.71
Oct 20231,6451,8381,3801,18172$85.64$2.98
Sep 20232,1312,0161,9081,70796$89.43$2.64
Aug 20233,1883,2531,9001,683113$81.39$2.58

Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

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Nearby

This lease belongs to

OperatorEOG Resources, Inc.FieldEagleville (Eagle Ford-1)CountyAtascosa County

EOG Resources, Inc. in Atascosa County

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