Texas oil lease
ProducingFORTRESS B1
Fortress B1 is an oil lease in Martin County, Texas, operated by Diamondback E&P LLC in the Spraberry (Trend Area) field.
1 well
- Operator
- Diamondback E&P LLC
- County
- Martin County
- RRC lease
- 08-52382
Is your check right?
Where it sits
This county
- Gas, last 12 months
- 53,687 mcf
- Oil in Jul 2026
- 375 bbl
Checks stopped on this lease?
- Buyer
Buyer changed: ENTERPRISE M B MIDSTREAM LLC replaced ENT NAVITAS MDSTRM MDLND BAS LLC, ET GATHERING & PROCESSING LLC as the buyer of this lease's gas from oil wells on Aug 1, 2025.
SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.
See why checks stop on this leaseProduction by month
Oil output rose 20% over the last 12 months
- Oil (bars)
- Gas (line)
- Last 12 months
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
Where the gas went
95% of the gas went to a transmission line in the last 12 months
Flaring peaked at 15.3% of the gas in Jun 2026.
- Transmission line (2)
- Lease fuel (1)
- Flared (4)
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
Transmission line (2)
95% · 51,198 mcf
Flared (4)
4.4% · 2,359 mcf
Lease fuel (1)
0.2% · 130 mcf
4.4% of the gas flared in the last 12 months. 8 months above 3%.
Who has run this lease
The operator changed once, most recently in Oct 2021
- Diamondback E&P LLC Oct 2021 to now
- Qep Energy Company Jan 2020 to Sep 2021
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
1 well on this lease
| API number | Well no. | Status |
|---|---|---|
| 42-317-41596 | 07DN | Active |
SourceTexas Railroad Commission Wellbore Query.
Buyers and gatherers
| Company | Product | Role | Share% | From | Until |
|---|---|---|---|---|---|
| Valero Marketing and Supply Co. | Oil | Gathers | 100 | Apr 26, 2023 | – |
| Enterprise M B Midstream LLC | Casinghead gas | Buys | 100 | Aug 1, 2025 | – |
| Enterprise Products Operating LLC | Casinghead gas | Gathers | 100 | Aug 1, 2025 | – |
| Brazos Midstream Operating, LLC | Casinghead gas | Gathers | 100 | Apr 26, 2023 | Aug 1, 2025 |
| Ent Navitas Mdstrm Mdlnd Bas LLC | Casinghead gas | Buys | 50 | Apr 26, 2023 | Aug 1, 2025 |
| Et Gathering & Processing LLC | Casinghead gas | Buys | 50 | Oct 1, 2023 | Aug 1, 2025 |
| Etc Texas P/L, LTD | Casinghead gas | Buys | 50 | Apr 26, 2023 | Oct 1, 2023 |
| Qep Energy Company | Casinghead gas | Gathers | 100 | Apr 22, 2019 | Apr 26, 2023 |
| Etc Texas P/L, LTD | Casinghead gas | Buys | 55 | Apr 22, 2019 | Apr 26, 2023 |
SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).
616.16 acres on the newest permit
- Worth asking
An allocation well is on this lease
A well drilled across several tracts shares its production by an allocation formula, so the decimal is not always your acres over the unit acres. Ask the operator for the allocation formula and the tract factor for your land.
- Worth asking
A Rule 37 case is listed
The RRC permit records list a Rule 37 case. This does not establish your royalty share. Ask for the permit and unit plat for your well.
| API number | Well no. | Permit issued | Completed | Acreson the permit |
|---|---|---|---|---|
| 42-317-41596 | 07DN | Jul 12, 2018 | Apr 22, 2019 | 616.16 |
What Diamondback Energy, Inc. told investors it received
| Quarter | Oil$ per bbl | Gas$ per mcf | Gas liquids$ per bbl | Filing |
|---|---|---|---|---|
| Q2 2026 | $96.82 | −$2.15 | $18.56 | SEC filing |
| Q1 2026 | $73.47 | $0.18 | $16.68 | SEC filing |
| Q4 2025 | $58.00 | $0.03 | $13.51 | SEC filing |
| Q3 2025 | $64.60 | $0.75 | $17.28 | SEC filing |
| Q2 2025 | $63.23 | $0.88 | $18.13 | SEC filing |
| Q1 2025 | $70.95 | $2.11 | $23.94 | SEC filing |
SourceDiamondback Energy, Inc. quarterly reports, SEC EDGAR, company-wide averages before hedging.
Estimate your royalty
36 months, newest first
| Month | Oil producedbbl | Oil soldbbl | Gas producedmcf | Gas soldmcf, codes 2+3 | Flaredmcf | WTI$/bbl | Henry Hub$/MMBtu |
|---|---|---|---|---|---|---|---|
| Jul 2026Diamondback E&P | 375 | 377 | 5,533 | 5,496 | 24 | $80.46 | $2.89 |
| Jun 2026Diamondback E&P | 546 | 547 | 5,152 | 4,350 | 790 | $84.81 | $3.15 |
| May 2026Diamondback E&P | 682 | 680 | 5,751 | 5,550 | 187 | $102.13 | $2.94 |
| Apr 2026Diamondback E&P | 527 | 531 | 3,255 | 3,066 | 181 | $100.32 | $2.77 |
| Mar 2026Diamondback E&P | 688 | 685 | 2,874 | 2,759 | 108 | $91.38 | $3.04 |
| Feb 2026Diamondback E&P | 653 | 655 | 3,788 | 3,682 | 96 | $64.51 | $3.62 |
| Jan 2026Diamondback E&P | 525 | 535 | 3,121 | 2,817 | 295 | $60.04 | $7.72 |
| Dec 2025Diamondback E&P | 456 | 446 | 3,309 | 3,150 | 150 | $57.97 | $4.26 |
| Nov 2025Diamondback E&P | 592 | 594 | 4,777 | 4,690 | 76 | $60.06 | $3.79 |
| Oct 2025Diamondback E&P | 511 | 536 | 4,436 | 4,183 | 242 | $60.89 | $3.19 |
| Sep 2025Diamondback E&P | 578 | 551 | 4,840 | 4,716 | 114 | $63.96 | $2.97 |
| Aug 2025Diamondback E&P | 594 | 599 | 6,851 | 6,739 | 96 | $64.86 | $2.91 |
| Jul 2025Diamondback E&P | 541 | 534 | 5,949 | 5,891 | 43 | $68.39 | $3.20 |
| Jun 2025Diamondback E&P | 455 | 454 | 5,345 | 5,324 | 8 | $68.17 | $3.02 |
| May 2025Diamondback E&P | 334 | 335 | 651 | 642 | 7 | $62.17 | $3.12 |
| Apr 2025Diamondback E&P | 480 | 479 | 5,312 | 5,294 | 2 | $63.54 | $3.42 |
| Mar 2025Diamondback E&P | 534 | 532 | 0 | 0 | 0 | $68.24 | $4.12 |
| Feb 2025Diamondback E&P | 470 | 472 | 0 | 0 | 0 | $71.53 | $4.19 |
| Jan 2025Diamondback E&P | 462 | 462 | 0 | 0 | 0 | $75.74 | $4.13 |
| Dec 2024Diamondback E&P | 465 | 465 | 0 | 0 | 0 | $70.12 | $3.01 |
| Nov 2024Diamondback E&P | 405 | 405 | 0 | 0 | 0 | $69.95 | $2.12 |
| Oct 2024Diamondback E&P | 501 | 500 | 0 | 0 | 0 | $71.99 | $2.20 |
| Sep 2024Diamondback E&P | 479 | 479 | 0 | 0 | 0 | $70.24 | $2.28 |
| Aug 2024Diamondback E&P | 467 | 467 | 0 | 0 | 0 | $76.68 | $1.99 |
| Jul 2024Diamondback E&P | 432 | 432 | 0 | 0 | 0 | $81.80 | $2.07 |
| Jun 2024Diamondback E&P | 487 | 489 | 4,196 | 3,953 | 233 | $79.77 | $2.54 |
| May 2024Diamondback E&P | 410 | 407 | 0 | 0 | 0 | $80.02 | $2.12 |
| Apr 2024Diamondback E&P | 418 | 418 | 0 | 0 | 0 | $85.35 | $1.60 |
| Mar 2024Diamondback E&P | 374 | 374 | 0 | 0 | 0 | $81.28 | $1.49 |
| Feb 2024Diamondback E&P | 282 | 284 | 0 | 0 | 0 | $77.25 | $1.72 |
| Jan 2024Diamondback E&P | 393 | 391 | 402 | 399 | 2 | $74.15 | $3.18 |
| Dec 2023Diamondback E&P | 388 | 388 | 4,442 | 4,326 | 107 | $71.90 | $2.52 |
| Nov 2023Diamondback E&P | 564 | 565 | 6,454 | 6,438 | 3 | $77.69 | $2.71 |
| Oct 2023Diamondback E&P | 582 | 584 | 7,170 | 7,145 | 12 | $85.64 | $2.98 |
| Sep 2023Diamondback E&P | 499 | 496 | 6,825 | 6,810 | 4 | $89.43 | $2.64 |
| Aug 2023Diamondback E&P | 481 | 482 | 6,402 | 6,365 | 26 | $81.39 | $2.58 |
Flared above 3%
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
Diamondback E&P LLC in Martin County
- ACT B
5,676 bbl
- UNIVERSITY 7-2730 AL2
6,820 bbl
- FORTRESS C4
5,049 bbl
- MAVERICK 11-2 E
8,099 bbl
- NAIL "6"
8,649 bbl
- UL COMANCHE 42A
8,673 bbl
- PINOTAGE
8,375 bbl
- HALL A4
6,057 bbl
- UL 1125 E2
8,034 bbl
- NANCE "30"
8,823 bbl
Spraberry (Trend Area) field
- GUADALUPE -48-
6,441 bbl
- MIDLAND AC/WYLIE B 1305
8,890 bbl
- TOM-FOWLER 42N
6,859 bbl
- PRINCETON E
3,569 bbl
- UL COMANCHE 42A
8,673 bbl
- COX A 34
8,112 bbl
- PINOTAGE
8,375 bbl
- NE NAIL 10
7,597 bbl
- DANIEL SN 21-16 01
4,198 bbl
- BARRACUDA 45
6,905 bbl
Leases within 10 km
- FORTRESS A1
7,120 bbl · 0 km
- FORTRESS A2
8,227 bbl · 0 km
- KINGSFIELD D
21,804 bbl · 0.1 km
- KINGSFIELD C
15,513 bbl · 0.1 km
- POE A
15,493 bbl · 0.2 km
- TOM A
785 bbl · 0.2 km
- FLO D
41,869 bbl · 0.2 km
- FORTRESS B3
7,184 bbl · 0.3 km
- FORTRESS B2
5,037 bbl · 0.3 km
- FORTRESS B4
5,026 bbl · 0.3 km
Drilling permits within 10 km
BULLDAWG SWD #1
new drill · Backyard Environ State Line LLC · Martin County · 7.5 km
Permit 0919052 · Sep 30, 2026
HIGH NOON 8-20 E #2LS
new drill · horizontal · Diamondback E&P LLC · Martin County · 5.4 km
Permit 0918597 · Sep 17, 2026
HIGH NOON 8-20 G #2JM
new drill · horizontal · Diamondback E&P LLC · Martin County · 5.4 km
Permit 0918599 · Sep 17, 2026
HIGH NOON 8-20 F #3WA
new drill · horizontal · Diamondback E&P LLC · Martin County · 5.4 km
Permit 0918598 · Sep 17, 2026
HIGH NOON 8-20 D #2WB
new drill · horizontal · Diamondback E&P LLC · Martin County · 5.4 km
Permit 0918596 · Sep 17, 2026