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Texas oil lease

Producing

DIAMOND HEAD -A-

Diamond Head -A- is an oil lease in Atascosa County, Texas, operated by Calk, Roger D. in the C.j.p. (Reef) field.

3 wells

309bbl oil, last 12 months+7% vs prior year
Operator
Calk, Roger D.
County
Atascosa County
Field
C.j.p. (Reef)
RRC lease
01-09729

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Oil in Jun 2026
20 bbl
Reporting since
Jan 2020

Production by month

Oil output rose 7% over the last 12 months

Jul 2026 was not reported.

  • Oil (bars)
  • Last 12 months
Oil output rose 7% over the last 12 monthsMonthly oil production for DIAMOND HEAD -A-, Aug 2023 to Jul 2026. Oil output rose 7% over the last 12 months. 269 bbl in the 12 months through Jul 2026, against 251 bbl in the 12 months before.Last 12 months: 269 bblbbl per month020406080Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 7% over the last 12 monthsMonthly oil production for DIAMOND HEAD -A-, Aug 2023 to Jul 2026. Oil output rose 7% over the last 12 months. 269 bbl in the 12 months through Jul 2026, against 251 bbl in the 12 months before.Last 12 monthsbbl per month020406080Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

No gas disposition reported for this lease

The operator has not reported where the gas went in the months we hold.

3 wells on this lease

Wells on DIAMOND HEAD -A-
API numberWell no.Status
42-013-325232Active
42-013-327333Active
42-013-329404Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Gulfmark Energy, Inc.OilGathers50Jan 1, 2018
Shell Trading (Us) CompanyOilGathers50Jan 1, 2010

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

Who buys my oilOil price check

80 acres on the newest permit

The wells on this lease state different acreage

The permits state between 80 and 656 acres.

Permits for Diamond Head -A-
API numberWell no.Acreson the permit
42-013-32940480
42-013-32733380
42-013-325232656

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for DIAMOND HEAD -A-
MonthOil producedbblOil soldbblWTI$/bblHenry Hub$/MMBtu
Jul 2026No report filed––$80.46$2.89
Jun 2026200$84.81$3.15
May 2026200$102.13$2.94
Apr 2026200$100.32$2.77
Mar 2026200$91.38$3.04
Feb 2026200$64.51$3.62
Jan 202667147$60.04$7.72
Dec 2025200$57.97$4.26
Nov 20252102$60.06$3.79
Oct 2025200$60.89$3.19
Sep 2025200$63.96$2.97
Aug 2025400$64.86$2.91
Jul 2025400$68.39$3.20
Jun 2025200$68.17$3.02
May 2025200$62.17$3.12
Apr 202529149$63.54$3.42
Mar 2025400$68.24$4.12
Feb 202512142$71.53$4.19
Jan 2025100$75.74$4.13
Dec 2024100$70.12$3.01
Nov 2024100$69.95$2.12
Oct 2024200$71.99$2.20
Sep 2024200$70.24$2.28
Aug 2024200$76.68$1.99
Jul 2024200$81.80$2.07
Jun 2024200$79.77$2.54
May 202420140$80.02$2.12
Apr 2024400$85.35$1.60
Mar 202440140$81.28$1.49
Feb 2024400$77.25$1.72
Jan 2024200$74.15$3.18
Dec 2023400$71.90$2.52
Nov 2023400$77.69$2.71
Oct 2023400$85.64$2.98
Sep 202327147$89.43$2.64
Aug 2023400$81.39$2.58

No report filed

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

OperatorCalk, Roger D.FieldC.j.p. (Reef)CountyAtascosa County

Calk, Roger D. in Atascosa County

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C.j.p. (Reef) field

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New drilling permits in Atascosa County

Newest in the county: this lease has no coordinates.