Texas oil lease
ProducingDUVAL RANCH SEC. 79
Duval Ranch Sec. 79 is an oil lease in Duval County, Texas, operated by Killam Oil Co., Ltd. in the D C R-79 field.
1 well
- Operator
- Killam Oil Co., Ltd.
- County
- Duval County
- Field
- D C R-79
- RRC lease
- 04-00623
Is your check right?
Where it sits
This county
- Oil in Jul 2026
- 56 bbl
- Reporting since
- Jan 2020
Production by month
Oil output fell 7% over the last 12 months
- Oil (bars)
- Last 12 months
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
Where the gas went
No gas disposition reported for this lease
1 well on this lease
| API number | Well no. | Status |
|---|---|---|
| 42-131-05449 | 8 | Active |
SourceTexas Railroad Commission Wellbore Query.
Buyers and gatherers
| Company | Product | Role | Share% | From |
|---|---|---|---|---|
| Gulfmark Energy, Inc. | Oil | Gathers | 50 | Apr 1, 2012 |
| Valero Marketing and Supply Co. | Oil | Gathers | 50 | Apr 1, 2012 |
SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).
What the drilling permits say
- Good to know
The state has no unit acreage for this lease
Ask the operator for the acreage on your well's division order and unit plat.
| API number | Well no. | Permit issued | Completed | Acreson the permit |
|---|---|---|---|---|
| 42-131-05443 | 2 | – | – | – |
| 42-131-05448 | 7 | – | Aug 25, 1952 | – |
| 42-131-05449 | 8 | – | Dec 13, 1952 | – |
Estimate your royalty
36 months, newest first
| Month | Oil producedbbl | Oil soldbbl | WTI$/bbl | Henry Hub$/MMBtu |
|---|---|---|---|---|
| Jul 2026 | 56 | 54 | $80.46 | $2.89 |
| Jun 2026 | 63 | 53 | $84.81 | $3.15 |
| May 2026 | 52 | 53 | $102.13 | $2.94 |
| Apr 2026 | 68 | 50 | $100.32 | $2.77 |
| Mar 2026 | 46 | 49 | $91.38 | $3.04 |
| Feb 2026 | 67 | 105 | $64.51 | $3.62 |
| Jan 2026 | 54 | 47 | $60.04 | $7.72 |
| Dec 2025 | 52 | 52 | $57.97 | $4.26 |
| Nov 2025 | 8 | 0 | $60.06 | $3.79 |
| Oct 2025 | 67 | 125 | $60.89 | $3.19 |
| Sep 2025 | 78 | 65 | $63.96 | $2.97 |
| Aug 2025 | 56 | 0 | $64.86 | $2.91 |
| Jul 2025 | 74 | 127 | $68.39 | $3.20 |
| Jun 2025 | 80 | 68 | $68.17 | $3.02 |
| May 2025 | 78 | 63 | $62.17 | $3.12 |
| Apr 2025 | 67 | 63 | $63.54 | $3.42 |
| Mar 2025 | 57 | 115 | $68.24 | $4.12 |
| Feb 2025 | 79 | 0 | $71.53 | $4.19 |
| Jan 2025 | 32 | 65 | $75.74 | $4.13 |
| Dec 2024 | 27 | 0 | $70.12 | $3.01 |
| Nov 2024 | 47 | 61 | $69.95 | $2.12 |
| Oct 2024 | 47 | 76 | $71.99 | $2.20 |
| Sep 2024 | 59 | 68 | $70.24 | $2.28 |
| Aug 2024 | 68 | 69 | $76.68 | $1.99 |
| Jul 2024 | 60 | 0 | $81.80 | $2.07 |
| Jun 2024 | 66 | 69 | $79.77 | $2.54 |
| May 2024 | 68 | 67 | $80.02 | $2.12 |
| Apr 2024 | 56 | 63 | $85.35 | $1.60 |
| Mar 2024 | 63 | 65 | $81.28 | $1.49 |
| Feb 2024 | 52 | 58 | $77.25 | $1.72 |
| Jan 2024 | 66 | 56 | $74.15 | $3.18 |
| Dec 2023 | 52 | 49 | $71.90 | $2.52 |
| Nov 2023 | 19 | 0 | $77.69 | $2.71 |
| Oct 2023 | 24 | 43 | $85.64 | $2.98 |
| Sep 2023 | 28 | 44 | $89.43 | $2.64 |
| Aug 2023 | 31 | 0 | $81.39 | $2.58 |
SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.
How to check your stub against this lease Checks stopped on this lease? See the likely reasonsDo your checks match this lease?
Nearby
This lease belongs to
Killam Oil Co., Ltd. in Duval County
- DUVAL RANCH '79'
916 bbl
- DCR 295 SW
854 bbl
- DCR-STATE 64-11 OIL UNIT
851 bbl
- DCR 105
804 bbl
- MAG.DUVAL RANCH SEC. 208-209
766 bbl
- DCRC SEC. 95
679 bbl
- DCR 152
635 bbl
- DCR 106
628 bbl
- DCR-STATE 64-8 OIL UNIT
489 bbl
- DUVAL RANCH SEC. 578
475 bbl
D C R-79 field
- DUVAL RANCH 79 COLE -C- UNIT
1,329 bbl
- DUVAL RANCH '79'
916 bbl
Leases within 10 km
- HUMBLE DUVAL RANCH SEC. 79
0 bbl · 0.2 km
- DUVAL RANCH 79 COLE -C- UNIT
1,329 bbl · 0.3 km
- DCRC 79
0 mcf · 0.7 km
- DUVAL RANCH '79'
916 bbl · 0.9 km
- DCRC 79
0 mcf · 1 km
- DCR 79
0 mcf · 1 km
- DCRC MF NCT-56
0 bbl · 1.2 km
- DCR-STATE 262
0 mcf · 1.3 km
- DCR 82
0 mcf · 1.3 km
- DCRC 79
0 mcf · 1.3 km
Drilling permits within 10 km
WHITE, P. E. -B- #148
recompletion · Killam Oil Co., Ltd. · Duval County · 5.8 km
Permit 0909552 · Jul 30, 2025
ORTIZ #1
recompletion · South Texas Disposal Srvs, LLC · Duval County · 9.6 km
Permit 0903419 · Jul 7, 2025
DCR 51 #1
new drill · Killam Oil Co., Ltd. · Duval County · 8.2 km
Permit 0896396 · Jan 9, 2024