Texas oil lease · RRC district 08 · Lease 31304
ProducingSWORD
Sword is an oil lease in Martin County, Texas, operated by Diamondback E&P LLC in the Spraberry (Trend Area) field. The Railroad Commission shows 1,662 bbl of oil in the 12 months through Jul 2026.
Oil lease dossier · 1 well
- Operator
- Diamondback E&P LLC
- County
- Martin County
- RRC lease
- 08-31304
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Where it sits
This county
- Oil in Jul 2026
- 137 bbl
- Reporting to the state
- since Jan 2020
- Wells
- 1
- Data through
- Jul 2026
Production
Month by month, from the state record
Oil output fell 19% over the last 12 months
1,662 bbl in the 12 months through Jul 2026, against 2,049 bbl in the 12 months before.
- Oil (bars, left axis)
- Gas (line, right axis)
- Last 12 months
SourceTexas Railroad Commission Production Data Query, oil lease 31304, district 08. Reported through Jul 2026. The state revises recent months.
Gas disposition
Where the gas went
All of the gas went to flaring in the only month reported
Flaring peaked at 100.0% of the gas in Apr 2025.
SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 31304, district 08. Reported through Jul 2026.
Flared (4)
Burned off or vented, not sold. It pays no royalty. More than 3% in a month is worth watching.
Over the only month reported, 100.0% of the gas was flared. One month went above 3%, which we mark in the ledger below.
Operator history
Who has run this lease
The operator changed once, most recently in Jan 2025
If your statements skip or shrink around a change, ask the new operator's owner relations department whether the month is in suspense.
- Diamondback E&P LLC Jan 2025 to now
- Endeavor Energy Resources L.P. Jan 2020 to Dec 2024
SourceTexas Railroad Commission Production Data Query, operator by month. Reported through Jul 2026.
Wells
Wells on this lease
No wells are linked to this lease in our data
Estimator
Estimate your royalty for this lease
Estimator
What could your check be?
Your decimal interest is the small number on your division order that says what share of the whole lease (8/8ths) is yours. Type it in and we apply it to what the state says SWORD sold each month.
For example 0.00097656, or a fraction like 1/1024.
Dollars per barrel. Your statements show the gap your operator uses. Leave 0 to price oil at WTI.
Your estimate appears here
An estimate, not your check
Ledger
36 months, newest first
| Month | Oil producedbbl | Oil soldbbl | Gas producedmcf | Gas soldmcf, codes 2+3 | Flaredmcf, code 4 | WTI$ per bbl | Henry Hub$ per MMBtu |
|---|---|---|---|---|---|---|---|
| Jul 2026Diamondback E&P | 137 | 178 | 0 | 0 | 0 | $80.46 | $2.89 |
| Jun 2026Diamondback E&P | 132 | 0 | 0 | 0 | 0 | $84.81 | $3.15 |
| May 2026Diamondback E&P | 132 | 179 | 0 | 0 | 0 | $102.13 | $2.94 |
| Apr 2026Diamondback E&P | 132 | 181 | 0 | 0 | 0 | $100.32 | $2.77 |
| Mar 2026Diamondback E&P | 157 | 184 | 0 | 0 | 0 | $91.38 | $3.04 |
| Feb 2026Diamondback E&P | 151 | 0 | 0 | 0 | 0 | $64.51 | $3.62 |
| Jan 2026Diamondback E&P | 127 | 191 | 0 | 0 | 0 | $60.04 | $7.72 |
| Dec 2025Diamondback E&P | 139 | 178 | 0 | 0 | 0 | $57.97 | $4.26 |
| Nov 2025Diamondback E&P | 142 | 165 | 0 | 0 | 0 | $60.06 | $3.79 |
| Oct 2025Diamondback E&P | 144 | 0 | 0 | 0 | 0 | $60.89 | $3.19 |
| Sep 2025Diamondback E&P | 139 | 175 | 0 | 0 | 0 | $63.96 | $2.97 |
| Aug 2025Diamondback E&P | 130 | 141 | 0 | 0 | 0 | $64.86 | $2.91 |
| Jul 2025Diamondback E&P | 147 | 176 | 0 | 0 | 0 | $68.39 | $3.20 |
| Jun 2025Diamondback E&P | 148 | 175 | 0 | 0 | 0 | $68.17 | $3.02 |
| May 2025Diamondback E&P | 168 | 181 | 0 | 0 | 0 | $62.17 | $3.12 |
| Apr 2025Diamondback E&P | 161 | 180 | 1 | 0 | 1 | $63.54 | $3.42 |
| Mar 2025Diamondback E&P | 171 | 188 | 0 | 0 | 0 | $68.24 | $4.12 |
| Feb 2025Diamondback E&P | 166 | 185 | 0 | 0 | 0 | $71.53 | $4.19 |
| Jan 2025Diamondback E&P | 195 | 197 | 0 | 0 | 0 | $75.74 | $4.13 |
| Dec 2024Endeavor Energy | 191 | 181 | 0 | 0 | 0 | $70.12 | $3.01 |
| Nov 2024Endeavor Energy | 210 | 187 | 0 | 0 | 0 | $69.95 | $2.12 |
| Oct 2024Endeavor Energy | 391 | 353 | 0 | 0 | 0 | $71.99 | $2.20 |
| Sep 2024Endeavor Energy | 98 | 0 | 0 | 0 | 0 | $70.24 | $2.28 |
| Aug 2024Endeavor Energy | 3 | 167 | 0 | 0 | 0 | $76.68 | $1.99 |
| Jul 2024Endeavor Energy | 104 | 0 | 0 | 0 | 0 | $81.80 | $2.07 |
| Jun 2024Endeavor Energy | 174 | 177 | 0 | 0 | 0 | $79.77 | $2.54 |
| May 2024Endeavor Energy | 167 | 362 | 0 | 0 | 0 | $80.02 | $2.12 |
| Apr 2024Endeavor Energy | 186 | 0 | 0 | 0 | 0 | $85.35 | $1.60 |
| Mar 2024Endeavor Energy | 175 | 188 | 0 | 0 | 0 | $81.28 | $1.49 |
| Feb 2024Endeavor Energy | 185 | 187 | 0 | 0 | 0 | $77.25 | $1.72 |
| Jan 2024Endeavor Energy | 183 | 187 | 0 | 0 | 0 | $74.15 | $3.18 |
| Dec 2023Endeavor Energy | 210 | 187 | 0 | 0 | 0 | $71.90 | $2.52 |
| Nov 2023Endeavor Energy | 229 | 358 | 0 | 0 | 0 | $77.69 | $2.71 |
| Oct 2023Endeavor Energy | 183 | 175 | 0 | 0 | 0 | $85.64 | $2.98 |
| Sep 2023Endeavor Energy | 272 | 182 | 0 | 0 | 0 | $89.43 | $2.64 |
| Aug 2023Endeavor Energy | 0 | 0 | 0 | 0 | 0 | $81.39 | $2.58 |
No report filed More than 3% of gas flared
SourceVolumes: Texas Railroad Commission Production Data Query, reported through Jul 2026. Prices: EIA WTI Cushing spot and Henry Hub spot, monthly, through Aug 2026. “Gas sold” is gas sent to a transmission line (code 2) or a plant (code 3).
Check your statements
Do your checks match this lease?
Upload your statements for SWORD. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Diamondback E&P LLC.
- A month that was never paid
- Your share of the barrels and mcf
- The price against WTI and Henry Hub
- Fees taken on gas
- Late payment interest
Around this lease
Walk the neighborhood
This lease belongs to
Diamondback E&P LLC in Martin County
- BUTCH CASSIDY 43-7 UNIT 1
2,484,597 bbl last 12 months
- SUNDANCE KID 43-7 UNIT 2
2,274,495 bbl last 12 months
- HERCULES 55-64 UNIT
2,061,904 bbl last 12 months
- PIER 22-23 UNIT 1
2,003,367 bbl last 12 months
- CAMPBELL
1,856,668 bbl last 12 months
Spraberry (Trend Area) field
- FEE 'BP'
4,094,243 bbl last 12 months
- YELLOW BELLY
3,313,031 bbl last 12 months
- SOUTH CURTIS RANCH
2,812,875 bbl last 12 months
- FEE "BM"
3,039,124 bbl last 12 months
- SILVER BULLET
2,685,879 bbl last 12 months
New drilling permits in Martin County
We do not have coordinates for this lease, so these are the newest permits in its county.
No recent drilling permits found for this area.
How to read this page
Questions owners ask
What is a decimal interest?
It is your share of the whole lease, written as a decimal. A 1/4 royalty on 5 net acres in a 1,280-acre unit is 1/4 × 5 ÷ 1,280 = 0.00097656. Your division order states yours.
How do I use this page to check a royalty check?
Take the “Oil sold” volume for the month the check covers and multiply it by your decimal. The answer should match the barrels on your statement. If it does not, upload the statement and we will show where the two differ.
Why is the newest month Jul 2026?
The Railroad Commission publishes production two to three months after the fact and revises recent months. We re-pull the latest three months on every update.
Does this page show what my check should be?
No. It shows what the state recorded. Prices, fees and taxes depend on your lease and on what your operator gets for the oil and gas. The estimator gives a ceiling to compare against.
Sources and method
Where these numbers come from
- Production and disposition by month: Texas Railroad Commission Production Data Query, oil lease 31304, district 08, reported through Jul 2026.
- Wells: Texas Railroad Commission Wellbore Query.
- Prices: U.S. Energy Information Administration, WTI Cushing spot and Henry Hub spot, monthly.
- Page updated Sep 28, 2026.
We show the state’s numbers as filed. Where the state has no report for a month, we say so instead of guessing.