Texas oil lease
ProducingCOBRA 10C
Cobra 10C is an oil lease in McMullen County, Texas, operated by Javelin Energy Partners Mgmt LLC in the Eagleville (Eagle Ford-1) field.
1 well
- Operator
- Javelin Energy Partners Mgmt LLC
- County
- McMullen County
- RRC lease
- 01-21568
Is your check right?
Where it sits
This county
- Gas, last 12 months
- 51,973 mcf
- Oil in Jul 2026
- 2,307 bbl
Production by month
Oil output fell 86% since Oct 2024
- Oil (bars)
- Gas (line)
- Last 12 months
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
Where the gas went
99% of the gas went to a transmission line in the last 12 months
Flaring peaked at 6.2% of the gas in May 2025.
- Transmission line (2)
- Lease fuel (1)
- Flared (4)
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
Transmission line (2)
99% · 51,375 mcf
Flared (4)
1.2% · 598 mcf
1.2% of the gas flared in the last 12 months. 3 months above 3%.
Who has run this lease
The operator changed once, most recently in Feb 2025
- Javelin Energy Partners Mgmt LLC Feb 2025 to now
- Ridgemar Energy Operating, LLC Oct 2024 to Jan 2025
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
1 well on this lease
| API number | Well no. | Status |
|---|---|---|
| 42-311-37503 | 12H | Active |
SourceTexas Railroad Commission Wellbore Query.
Buyers and gatherers
| Company | Product | Role | Share% | From |
|---|---|---|---|---|
| Formula Midstream Partners LLC | Oil | Gathers | 100 | Oct 11, 2024 |
| Energy Transfer Company | Casinghead gas | Buys | 100 | Oct 11, 2024 |
| Energy Transfer Company | Casinghead gas | Gathers | 100 | Oct 11, 2024 |
SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).
Estimate your royalty
22 months, newest first
| Month | Oil producedbbl | Oil soldbbl | Gas producedmcf | Gas soldmcf, codes 2+3 | Flaredmcf | WTI$/bbl | Henry Hub$/MMBtu |
|---|---|---|---|---|---|---|---|
| Jul 2026Javelin Energy | 2,307 | 2,249 | 3,261 | 3,239 | 22 | $80.46 | $2.89 |
| Jun 2026Javelin Energy | 1,016 | 1,039 | 1,440 | 1,429 | 11 | $84.81 | $3.15 |
| May 2026Javelin Energy | 1,744 | 1,746 | 4,671 | 4,588 | 83 | $102.13 | $2.94 |
| Apr 2026Javelin Energy | 2,161 | 2,189 | 4,606 | 4,449 | 157 | $100.32 | $2.77 |
| Mar 2026Javelin Energy | 2,010 | 2,004 | 1,850 | 1,758 | 92 | $91.38 | $3.04 |
| Feb 2026Javelin Energy | 2,817 | 2,851 | 4,563 | 4,552 | 11 | $64.51 | $3.62 |
| Jan 2026Javelin Energy | 2,689 | 2,655 | 4,361 | 4,301 | 60 | $60.04 | $7.72 |
| Dec 2025Javelin Energy | 3,512 | 3,520 | 6,442 | 6,302 | 140 | $57.97 | $4.26 |
| Nov 2025Javelin Energy | 3,842 | 3,867 | 6,703 | 6,703 | 0 | $60.06 | $3.79 |
| Oct 2025Javelin Energy | 4,756 | 4,718 | 7,969 | 7,953 | 16 | $60.89 | $3.19 |
| Sep 2025Javelin Energy | 3,341 | 3,326 | 3,047 | 3,047 | 0 | $63.96 | $2.97 |
| Aug 2025Javelin Energy | 3,638 | 3,695 | 3,060 | 3,054 | 6 | $64.86 | $2.91 |
| Jul 2025Javelin Energy | 3,556 | 3,532 | 4,639 | 4,609 | 30 | $68.39 | $3.20 |
| Jun 2025Javelin Energy | 4,964 | 5,055 | 5,888 | 5,858 | 30 | $68.17 | $3.02 |
| May 2025Javelin Energy | 5,019 | 4,923 | 5,344 | 5,011 | 333 | $62.17 | $3.12 |
| Apr 2025Javelin Energy | 5,777 | 5,788 | 6,151 | 6,101 | 50 | $63.54 | $3.42 |
| Mar 2025Javelin Energy | 6,636 | 6,620 | 6,964 | 6,769 | 120 | $68.24 | $4.12 |
| Feb 2025Javelin Energy | 7,344 | 7,392 | 6,476 | 6,250 | 163 | $71.53 | $4.19 |
| Jan 2025Ridgemar Energy | 10,610 | 10,605 | 9,186 | 8,904 | 206 | $75.74 | $4.13 |
| Dec 2024Ridgemar Energy | 13,756 | 13,796 | 11,003 | 10,713 | 201 | $70.12 | $3.01 |
| Nov 2024Ridgemar Energy | 16,498 | 16,414 | 12,803 | 12,606 | 100 | $69.95 | $2.12 |
| Oct 2024Ridgemar Energy | 5,922 | 5,825 | 4,355 | 4,152 | 45 | $71.99 | $2.20 |
Flared above 3%
SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.
How to check your stub against this leaseDo your checks match this lease?
Nearby
This lease belongs to
Javelin Energy Partners Mgmt LLC in McMullen County
- MORRILL RANCH
45,491 bbl
- COBRA 10D
39,037 bbl
- COBRA 10B
36,773 bbl
- PHZ UNIT
34,604 bbl
- COBRA
32,809 bbl
- CAMARO POENISCH A3
26,352 bbl
- CAMARO POENISCH A1
25,078 bbl
- J. RAYES B UNIT
23,088 bbl
- CAMARO POENISCH A2
20,585 bbl
- COBRA B
18,493 bbl
Eagleville (Eagle Ford-1) field
- OCELOT
35,453 bbl
- FALLS CITY WEST B
34,331 bbl
- NEETS UNIT
33,777 bbl
- GRAND CANYON F
33,317 bbl
- EXCALIBUR B
34,470 bbl
- LOCKE PARTNERSHIP C
34,403 bbl
- JJ HENRY HC1 UNIT V
33,944 bbl
- IRVIN F-G-IMN ALLOC B
35,361 bbl
- BURGADA A
32,979 bbl
- ROAN A
35,136 bbl
Leases within 10 km
- COBRA 10D
39,037 bbl · 0 km
- COBRA 10B
36,773 bbl · 0 km
- COBRA 10A
50,269 bbl · 0 km
- SAN MIGUEL B UNIT
15,323 bbl · 1.3 km
- RABKE-MASPERO UNIT
7,306 bbl · 1.3 km
- CORVETTE C
5,122 bbl · 1.4 km
- COBRA
32,809 bbl · 1.4 km
- GRAN TORINO A
0 bbl · 1.4 km
- COBRA B
18,493 bbl · 1.7 km
- DICKE C UNIT
9,395 bbl · 1.8 km
Drilling permits within 10 km
LBJ D #4H
new drill · horizontal · EOG Resources, Inc. · Atascosa County · 4.8 km
Permit 0918739 · Sep 23, 2026
LBJ B #2H
new drill · horizontal · EOG Resources, Inc. · Atascosa County · 4.8 km
Permit 0918737 · Sep 23, 2026
LBJ A #1H
new drill · horizontal · EOG Resources, Inc. · Atascosa County · 4.8 km
Permit 0918736 · Sep 23, 2026
LBJ C #3H
new drill · horizontal · EOG Resources, Inc. · Atascosa County · 4.8 km
Permit 0918738 · Sep 23, 2026
TRAVIS D #4H
new drill · horizontal · EOG Resources, Inc. · Atascosa County · 5.9 km
Permit 0918735 · Sep 21, 2026