Texas oil lease
ProducingRIO SAN MARCOS 36-45 UNIT 2B
Rio San Marcos 36-45 Unit 2B is an oil lease in Midland County, Texas, operated by Diamondback E&P LLC in the Spraberry (Trend Area) field.
2 wells
- Operator
- Diamondback E&P LLC
- County
- Midland County
- RRC lease
- 08-62143
Is your check right?
Where it sits
This county
- Gas, last 12 months
- 491,649 mcf
- Oil in Jul 2026
- 10,555 bbl
Checks stopped on this lease?
- Operator
Operator changed: Diamondback E&P LLC took over from Endeavor Energy Resources L.P. in Jan 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 since Nov 2024
- Oil (bars)
- Gas (line)
- Last 12 months
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
Where the gas went
86% of the gas went to a transmission line in the last 12 months
Flaring peaked at 4.9% of the gas in Feb 2025.
- Transmission line (2)
- Lease fuel (1)
- Flared (4)
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
Transmission line (2)
86% · 424,966 mcf
Lease fuel (1)
13% · 64,728 mcf
Flared (4)
0.4% · 1,955 mcf
0.4% of the gas flared in the last 12 months. 2 months above 3%.
Who has run this lease
The operator changed once, most recently in Jan 2025
- Diamondback E&P LLC Jan 2025 to now
- Endeavor Energy Resources L.P. Nov 2024 to Dec 2024
SourceTexas Railroad Commission Production Data Query, through Jul 2026.
2 wells on this lease
| API number | Well no. | Status |
|---|---|---|
| 42-329-46849 | 283 | Active |
| 42-329-46869 | 263 | Active |
SourceTexas Railroad Commission Wellbore Query.
Buyers and gatherers
| Company | Product | Role | Share% | From |
|---|---|---|---|---|
| Enlink Crude Marketing, LLC | Oil | Gathers | 100 | Feb 4, 2025 |
| Enterprise Products Operating LLC | Casinghead gas | Buys | 100 | Feb 4, 2025 |
| Enterprise Products Operating LLC | Casinghead gas | Gathers | 100 | Feb 4, 2025 |
SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).
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 | $23.94 | SEC filing |
SourceDiamondback Energy, Inc. quarterly reports, SEC EDGAR, company-wide averages before hedging.
Estimate your royalty
21 months, newest first
| Month | Oil producedbbl | Oil soldbbl | Gas producedmcf | Gas soldmcf, codes 2+3 | Flaredmcf | WTI$/bbl | Henry Hub$/MMBtu |
|---|---|---|---|---|---|---|---|
| Jul 2026Diamondback E&P | 10,555 | 10,625 | 34,026 | 28,579 | 26 | $80.46 | $2.89 |
| Jun 2026Diamondback E&P | 10,490 | 10,402 | 29,956 | 24,516 | 491 | $84.81 | $3.15 |
| May 2026Diamondback E&P | 12,368 | 12,369 | 42,414 | 37,178 | 255 | $102.13 | $2.94 |
| Apr 2026Diamondback E&P | 11,346 | 11,346 | 32,316 | 27,123 | 32 | $100.32 | $2.77 |
| Mar 2026Diamondback E&P | 11,875 | 11,909 | 34,561 | 29,410 | 87 | $91.38 | $3.04 |
| Feb 2026Diamondback E&P | 13,278 | 13,272 | 44,039 | 38,778 | 133 | $64.51 | $3.62 |
| Jan 2026Diamondback E&P | 12,924 | 12,927 | 35,376 | 30,543 | 38 | $60.04 | $7.72 |
| Dec 2025Diamondback E&P | 16,365 | 16,352 | 39,857 | 34,622 | 2 | $57.97 | $4.26 |
| Nov 2025Diamondback E&P | 16,803 | 16,790 | 45,662 | 39,723 | 327 | $60.06 | $3.79 |
| Oct 2025Diamondback E&P | 17,090 | 17,076 | 42,557 | 36,644 | 260 | $60.89 | $3.19 |
| Sep 2025Diamondback E&P | 20,649 | 20,679 | 55,435 | 49,106 | 84 | $63.96 | $2.97 |
| Aug 2025Diamondback E&P | 22,854 | 22,865 | 55,450 | 48,744 | 220 | $64.86 | $2.91 |
| Jul 2025Diamondback E&P | 23,449 | 23,413 | 36,971 | 31,543 | 363 | $68.39 | $3.20 |
| Jun 2025Diamondback E&P | 27,281 | 27,324 | 53,532 | 47,981 | 539 | $68.17 | $3.02 |
| May 2025Diamondback E&P | 35,642 | 35,588 | 85,519 | 78,620 | 1,118 | $62.17 | $3.12 |
| Apr 2025Diamondback E&P | 33,459 | 33,514 | 59,204 | 54,918 | 793 | $63.54 | $3.42 |
| Mar 2025Diamondback E&P | 53,661 | 53,637 | 74,218 | 67,423 | 2,987 | $68.24 | $4.12 |
| Feb 2025Diamondback E&P | 60,339 | 60,242 | 73,779 | 66,309 | 3,623 | $71.53 | $4.19 |
| Jan 2025Diamondback E&P | 0 | 0 | 0 | 0 | 0 | $75.74 | $4.13 |
| Dec 2024Endeavor Energy | 0 | 0 | 0 | 0 | 0 | $70.12 | $3.01 |
| Nov 2024Endeavor Energy | 0 | 0 | 0 | 0 | 0 | $69.95 | $2.12 |
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 Midland County
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Spraberry (Trend Area) field
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Leases within 10 km
- RIO SAN MARCOS 36-45 UNIT 2A
597,191 bbl · 0 km
- HENCE "B"
23,139 bbl · 0.1 km
- BRADFORD 36
6,564 bbl · 0.4 km
- RIO SAN MARCOS 36-45 UNIT 1
60,845 bbl · 0.6 km
- RIO NUECES 37-44 UNIT 1
131,389 bbl · 0.6 km
- BRADFORD -32-
0 bbl · 0.6 km
- RIO SAN MARCOS 36-45 UNIT 1A
68,695 bbl · 0.8 km
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5,440 bbl · 1.2 km
- RIO NUECES 37-44 UNIT 2
123,005 bbl · 1.2 km
- RIO CONCHO 35-46 UNIT 2
817,978 bbl · 1.3 km
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