Texas oil lease · RRC district 02 · Lease 10478
ProducingBORIS UNIT
Boris Unit is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field. The Railroad Commission shows 59,936 bbl of oil in the 12 months through Jul 2026.
Oil lease dossier · 16 wells
- Operator
- Marathon Oil Ef LLC
- County
- Karnes County
- RRC lease
- 02-10478
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Where it sits
This county
- Gas, last 12 months
- 71,547 mcf
- Oil in Jul 2026
- 4,244 bbl
- Reporting to the state
- since Jan 2020
- Wells
- 16
Production
Month by month, from the state record
Oil output fell 18% over the last 12 months
59,936 bbl in the 12 months through Jul 2026, against 73,527 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 10478, district 02. Reported through Jul 2026. The state revises recent months.
Gas disposition
Where the gas went
Since Jun 2026 the lease's gas goes to lease fuel instead of a processing plant
Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 100.0% of the gas in Feb 2026.
- Processing plant (3)
- Lease fuel (1)
- Flared (4)
SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 10478, district 02. Reported through Jul 2026.
Processing plant (3)
Sent to a gas plant that pulls out natural gas liquids. Your statement should show plant products, and may show processing fees.
Lease fuel (1)
Burned to run equipment on the lease. Not sold, so it pays no royalty. A few percent is normal.
Flared (4)
Burned off or vented, not sold. It pays no royalty. More than 3% in a month is worth watching.
Over the last 12 months, 5.1% of the gas was flared. 28 months went above 3%, which we mark in the ledger below.
Operator history
Who has run this lease
Marathon Oil Ef LLC has reported this lease for the whole period
No change of operator in the months we hold.
- Marathon Oil Ef LLC Jan 2020 to now
SourceTexas Railroad Commission Production Data Query, operator by month. Reported through Jul 2026.
Wells
16 wells on this lease
| API number | Well no. | Status | Total depthft |
|---|---|---|---|
| 42-255-32897 | 1H | Active | – |
| 42-255-33271 | 2H | Active | – |
| 42-255-33272 | 3H | Active | – |
| 42-255-33273 | 6H | Active | – |
| 42-255-33274 | 7H | Active | – |
| 42-255-33607 | 2WS | Shut-in | – |
| 42-255-33674 | 4H | Active | – |
| 42-255-33675 | 5H | Active | – |
| 42-255-33676 | 9H | Active | – |
| 42-255-33677 | 10H | Active | – |
| 42-255-33817 | 8H | Active | – |
| 42-255-34124 | 11H | Active | – |
| 42-255-36706 | 501H | Active | – |
| 42-255-36707 | 502H | Active | – |
| 42-255-36708 | 503H | Active | – |
| 42-255-36709 | 504H | Active | – |
SourceTexas Railroad Commission Wellbore Query, district 02, lease 10478.
Who buys and gathers
Who moves and buys this lease's production
Oil
Enterprise Crude Oil LLC, Mission Petroleum Carriers, Inc., Pilot Travel Centers LLC and Reynolds Energy Transport LLC gather it.
Enterprise Crude Oil LLC gathers it: 25% of it, on the list since Jun 1, 2020 · Mission Petroleum Carriers, Inc. gathers it: 25% of it, on the list since Jun 1, 2020 · Pilot Travel Centers LLC gathers it: 25% of it, on the list since Jun 1, 2020 · Reynolds Energy Transport LLC gathers it: 25% of it, on the list since Jul 1, 2022
Gas from oil wells
Marathon Oil Ef LLC buys and gathers it.
Marathon Oil Ef LLC buys it: 100% of it, on the list since Jan 20, 2013 · Marathon Oil Ef LLC gathers it: 100% of it, on the list since Jan 20, 2013
Companies that used to be listed: Gulfmark Energy, Inc. (gathers it, until Jul 1, 2022); Amid Crude Trucking LLC (gathers it, until Jun 1, 2020); Enterprise Crude Oil LLC (gathers it, until Jun 1, 2020); Gulfmark Energy, Inc. (gathers it, until Jun 1, 2020); Mission Petroleum Carriers, Inc. (gathers it, until Jun 1, 2020); Trafigura Trading LLC (gathers it, until Jun 1, 2020).
SourceRailroad Commission of Texas, Form P-4 file, dated Sep 24, 2026 (source). A listed company is authorised to move or buy the production; the state does not say what it paid.
Unit and wells
704 acres on the newest permit
- Wells on the permits
- 1616 not plugged
- Horizontal
- 15
- First completion
- Jan 20, 2013
- Latest permit
- Nov 22, 2019
A pooling certificate was filed
Your tract may share its production with neighbours in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one permit.
16 wells are listed on this lease
Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.
| API number | Well no. | Permit issued | Completed | Acreson the permit |
|---|---|---|---|---|
| 42-255-36707 | 502H | Nov 22, 2019 | Jan 12, 2020 | 704 |
| 42-255-36708 | 503H | Nov 22, 2019 | Jan 19, 2020 | 704 |
| 42-255-36709 | 504H | Nov 22, 2019 | Jan 29, 2020 | 704 |
| 42-255-36706 | 501H | Nov 21, 2019 | Jan 3, 2020 | 704 |
| 42-255-34124 | 11H | Dec 5, 2014 | Aug 18, 2015 | 704 |
| 42-255-33817 | 8H | Jul 10, 2014 | Aug 18, 2015 | 704 |
| 42-255-33674 | 4H | May 6, 2014 | Sep 15, 2014 | 704 |
| 42-255-33675 | 5H | May 5, 2014 | Sep 15, 2014 | 704 |
| 42-255-33676 | 9H | May 5, 2014 | Sep 23, 2014 | 704 |
| 42-255-33677 | 10H | May 5, 2014 | Sep 23, 2014 | 704 |
| 42-255-33607 | 2WS | Feb 18, 2014 | Mar 4, 2014 | 704 |
| 42-255-33271 | 2H | Jul 17, 2013 | Mar 21, 2014 | 704 |
What the operator reported
What ConocoPhillips told investors it received
| Quarter | Oil$ per bbl | Gas$ per mcf | Gas liquids$ per bbl | Filing |
|---|---|---|---|---|
| Q2 2026 | $99.40 | $2.58 | $24.54 | SEC filing |
| Q1 2026 | $73.47 | $4.09 | $20.42 | SEC filing |
| Q3 2025 | $66.13 | $4.28 | $19.20 | SEC filing |
| Q2 2025 | $64.23 | $4.16 | $20.98 | SEC filing |
| Q1 2025 | $71.65 | $5.62 | $25.40 | SEC filing |
SourceConocoPhillips quarterly reports on SEC EDGAR, prices before hedging where the company states both. Read by machine from each filing’s tables; the link opens the filing so you can check the figure.
Estimator
Estimate your royalty for this lease
Estimator
What could your check be?
Your decimal interest is the small number on your division order that says what share of the whole lease (8/8ths) is yours. Type it in and we apply it to what the state says BORIS UNIT sold each month.
For example 0.00097656, or a fraction like 1/1024.
Dollars per barrel. Your statements show the gap your operator uses. Leave 0 to price oil at WTI.
Your estimate appears here
An estimate, not your check
Ledger
36 months, newest first
| Month | Oil producedbbl | Oil soldbbl | Gas producedmcf | Gas soldmcf, codes 2+3 | Flaredmcf, code 4 | WTI$ per bbl | Henry Hub$ per MMBtu |
|---|---|---|---|---|---|---|---|
| Jul 2026Marathon Oil | 4,244 | 4,308 | 5,565 | 2,306 | 22 | $80.46 | $2.89 |
| Jun 2026Marathon Oil | 5,764 | 5,811 | 8,394 | 3,638 | 180 | $84.81 | $3.15 |
| May 2026Marathon Oil | 10,856 | 9,534 | 12,195 | 8,873 | 177 | $102.13 | $2.94 |
| Apr 2026Marathon Oil | 0 | 0 | 0 | 0 | 0 | $100.32 | $2.77 |
| Mar 2026Marathon Oil | 8,963 | 9,937 | 9,738 | 5,974 | 258 | $91.38 | $3.04 |
| Feb 2026Marathon Oil | 393 | 710 | 17 | 0 | 17 | $64.51 | $3.62 |
| Jan 2026Marathon Oil | 3,451 | 3,398 | 3,038 | 0 | 191 | $60.04 | $7.72 |
| Dec 2025Marathon Oil | 5,250 | 5,347 | 5,395 | 0 | 261 | $57.97 | $4.26 |
| Nov 2025Marathon Oil | 4,374 | 3,750 | 5,188 | 145 | 276 | $60.06 | $3.79 |
| Oct 2025Marathon Oil | 5,765 | 5,766 | 8,026 | 2,038 | 664 | $60.89 | $3.19 |
| Sep 2025Marathon Oil | 5,467 | 4,839 | 7,458 | 1,204 | 1,415 | $63.96 | $2.97 |
| Aug 2025Marathon Oil | 5,409 | 6,447 | 6,533 | 1,384 | 320 | $64.86 | $2.91 |
| Jul 2025Marathon Oil | 5,662 | 4,826 | 7,756 | 2,517 | 269 | $68.39 | $3.20 |
| Jun 2025Marathon Oil | 5,519 | 5,606 | 6,813 | 1,502 | 248 | $68.17 | $3.02 |
| May 2025Marathon Oil | 5,868 | 5,534 | 7,418 | 1,536 | 345 | $62.17 | $3.12 |
| Apr 2025Marathon Oil | 6,298 | 6,174 | 8,185 | 2,504 | 552 | $63.54 | $3.42 |
| Mar 2025Marathon Oil | 6,158 | 6,107 | 8,289 | 2,715 | 361 | $68.24 | $4.12 |
| Feb 2025Marathon Oil | 5,641 | 6,259 | 5,899 | 1,503 | 385 | $71.53 | $4.19 |
| Jan 2025Marathon Oil | 6,551 | 6,785 | 6,962 | 1,993 | 602 | $75.74 | $4.13 |
| Dec 2024Marathon Oil | 6,366 | 5,788 | 6,483 | 904 | 364 | $70.12 | $3.01 |
| Nov 2024Marathon Oil | 6,044 | 6,216 | 6,418 | 1,218 | 304 | $69.95 | $2.12 |
| Oct 2024Marathon Oil | 6,810 | 6,924 | 8,321 | 2,577 | 328 | $71.99 | $2.20 |
| Sep 2024Marathon Oil | 6,093 | 5,953 | 6,956 | 897 | 210 | $70.24 | $2.28 |
| Aug 2024Marathon Oil | 6,517 | 6,594 | 7,902 | 1,087 | 160 | $76.68 | $1.99 |
| Jul 2024Marathon Oil | 6,714 | 6,978 | 8,513 | 1,612 | 266 | $81.80 | $2.07 |
| Jun 2024Marathon Oil | 7,016 | 7,055 | 9,303 | 2,339 | 281 | $79.77 | $2.54 |
| May 2024Marathon Oil | 7,146 | 7,046 | 9,378 | 2,060 | 254 | $80.02 | $2.12 |
| Apr 2024Marathon Oil | 7,251 | 7,421 | 9,519 | 2,683 | 235 | $85.35 | $1.60 |
| Mar 2024Marathon Oil | 7,242 | 6,853 | 9,423 | 2,597 | 426 | $81.28 | $1.49 |
| Feb 2024Marathon Oil | 6,958 | 6,966 | 9,577 | 2,960 | 594 | $77.25 | $1.72 |
| Jan 2024Marathon Oil | 8,371 | 8,412 | 10,458 | 3,886 | 607 | $74.15 | $3.18 |
| Dec 2023Marathon Oil | 7,423 | 7,386 | 8,937 | 2,415 | 443 | $71.90 | $2.52 |
| Nov 2023Marathon Oil | 7,193 | 6,945 | 8,888 | 2,122 | 553 | $77.69 | $2.71 |
| Oct 2023Marathon Oil | 8,304 | 8,814 | 11,828 | 4,447 | 820 | $85.64 | $2.98 |
| Sep 2023Marathon Oil | 7,277 | 7,092 | 8,598 | 1,445 | 805 | $89.43 | $2.64 |
| Aug 2023Marathon Oil | 7,950 | 7,741 | 10,230 | 2,725 | 843 | $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 BORIS UNIT. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Marathon Oil Ef 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
Marathon Oil Ef LLC in Karnes County
- RIDLEY 01
454,287 bbl last 12 months
- DAVIS-MENSIK SA1
1,380,929 mcf last 12 months
- REYNOLDS GAS UNIT 2
286,429 bbl last 12 months
- DAVIS-ALEXANDER SA1
1,389,684 mcf last 12 months
- ELIZONDO 01
871,460 mcf last 12 months
Eagleville (Eagle Ford-2) field
- METZ RANCH UNIT A
1,453,213 bbl last 12 months
- CLARK A
1,161,597 bbl last 12 months
- MUIR E
1,087,989 bbl last 12 months
- RUCKMAN RANCH UNIT
1,103,698 bbl last 12 months
- SONNY SEIFERT A
895,543 bbl last 12 months
Leases within 10 km
Found by the location of their wells.
- LONESOME DOVE A
86,754 bbl last 12 months · 0.7 km away
- RUCKMAN TRUST UNIT D
625,688 bbl last 12 months · 1.1 km away
- RUCKMAN TRUST UNIT E
753 bbl last 12 months · 1.1 km away
- RUCKMAN TRUST UNIT C
211,485 bbl last 12 months · 1.1 km away
- RUCK-COL-BROWN ULW A
206,250 bbl last 12 months · 1.1 km away
Drilling permits within 10 km
RUCKMAN RANCH UNIT #29
new drill · horizontal · Burlington Resources O & G Co LP · De Witt County · 9.7 km away
Permit 0917318 · Jul 29, 2026
MAYER C AC #1H
new drill · horizontal · BPX Operating Company · Karnes County · 5.9 km away
Permit 0917244 · Jul 27, 2026
RUCKMAN RANCH UNIT #46
new drill · horizontal · Burlington Resources O & G Co LP · De Witt County · 9.7 km away
Permit 0917328 · Jul 24, 2026
RUCKMAN RANCH UNIT #45
new drill · horizontal · Burlington Resources O & G Co LP · De Witt County · 9.7 km away
Permit 0917325 · Jul 24, 2026
MAYER C AC #3H
new drill · horizontal · BPX Operating Company · Karnes County · 5.9 km away
Permit 0917246 · Jul 24, 2026
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 10478, district 02, 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.