There is a specific feeling that comes with opening the mailbox and finding an envelope from an oil and gas operator. It’s usually excitement, followed immediately by mild confusion.
You open the envelope (or the PDF email attachment), and you see the check. The number at the bottom is clear enough. That’s the money going into your bank account. But attached to that check is a long, perforated strip of paper—the revenue statement—that often looks like it was written in code.
It’s full of decimal points that go out eight places, codes like “100” or “200,” and negative numbers labeled with acronyms you’ve never heard of.
Here is the honest truth: most mineral owners glance at the bottom line, shrug, and toss the statement in a shoebox. As long as the check clears, why worry about the details?
We get it. We’ve seen thousands of these statements from hundreds of different operators. Some are clear and professional; others look like they were typed up on a typewriter in 1985. But learning to read that “check stub” is the single best way to protect your asset. It is how you catch errors, it’s how you handle your taxes, and it is the only way to truly know what your property is worth.
You don’t need to be a petroleum accountant to understand this stuff. You just need to know which columns matter and which ones are just noise.
The Big Picture: The Equation
Before we get into the microscopic details, let’s look at the basic math. Every royalty check, regardless of the operator or the size of the well, follows the same basic logic.
Gross Value (Volume × Price) Minus Taxes (The state’s cut) Minus Deductions (The cost to get it to market) Multiplied by Your Interest (Your slice of the pie) Equals: Your Net Check
That’s it. Every confusing column on that page fits into one of those categories. The operator is taking the massive amount of oil or gas produced, selling it, taking out the expenses, and then calculating your tiny fraction of what’s left.
Let’s walk through the specific columns you’ll see, moving from left to right.
1. The “Whose and Where” Columns
The first few columns usually identify the property. You’ll see a Property Name (often the last name of the original landowner, like “Smith A 1H”) and a Property Number.
If you own minerals in multiple places, this is critical. We often meet families who think their check is coming from one big well, only to realize they actually have small interests in six different wells.
Check the County and State listed here. It sounds obvious, but errors happen. We once reviewed a portfolio for a family in Midland who had been getting paid on a well in the wrong county for two years. It was a clerical error, but it messed up their tax filings significantly.
2. The Production Date (The Time Machine)
This causes the most confusion for new owners. You’ll see a column labeled Prod Date or Production Month.
The date listed here is rarely the current month. The oil industry moves on a delay. If you receive a check in April, the production date listed will likely be January or February.
The oil has to be pulled from the ground, transported, sold to a refinery or midstream company, and the funds collected by the operator before they cut your check. This usually creates a 60 to 90-day lag.
Why does this matter? If you see a headline today that oil prices crashed, you won’t feel that pain in your mailbox for two or three months. Conversely, if prices spike today, your check next week will still reflect the lower prices from two months ago. Don’t panic when the check doesn’t match the news cycle—it’s just on a delay.
3. Product Codes: What Are They Selling?
You’ll usually see a column labeled Prod Code or simply Product. Instead of writing “Oil” or “Gas,” the industry uses standard numeric codes. While they vary slightly, the universal standards are usually:
- 100 (or 1): Crude Oil. This is the liquid black gold.
- 200 (or 2): Natural Gas. This is the invisible commodity measured in MCF (thousand cubic feet).
- 300 (or 3): Condensate. This is a very light, high-quality liquid that drops out of the gas stream. It often sells for close to the price of oil.
- 400/Plant Products: Natural Gas Liquids (NGLs) like ethane, propane, and butane extracted at a processing plant.
If you have a well that produces both oil and gas, you will see multiple lines for the same month—one line for the oil sold (Code 100) and one line for the gas sold (Code 200).
4. The Price Column
This is the number everyone wants to verify. The Unit Price column shows what the operator sold the product for.
For oil, this is price per barrel. For gas, it’s price per MCF or MMBtu.
Here is the tricky part: You cannot simply Google “Oil Price Today” and expect it to match your statement. The price on your check is an average of the daily prices during the production month, adjusted for the specific quality of your oil and the location of the well.
West Texas Intermediate (WTI) is a benchmark price. But if your oil is “sour” (high sulfur) or located far from a pipeline, you might get paid WTI minus a few dollars.
However, this is your first “sanity check.” If WTI averaged $75 in January, and your January production line shows you got paid $45, something is wrong. That variance is too high. That is when you pick up the phone.
5. Your Decimal Interest
This is the most powerful number on the page. The :Decimal Interest (often labeled Owner Interest or DOI) represents exactly what portion of that well you own.
It usually looks like a tiny number: 0.00156250.
That doesn’t look like much, but in a well generating $500,000 a month, that tiny decimal is a $781 monthly check.
A critical warning: Watch this number. If it changes, you need to ask why. Sometimes, when a new well is drilled, the operator estimates your decimal. Later, after they run a strict title opinion, they might adjust it down. If they overpaid you for six months based on the wrong decimal, they will claw that money back from future checks.
We always advise owners to calculate their own decimal based on their lease terms and acreage. If you don’t know how to do that, find someone who does. blindly trusting the operator’s math is a risk you don’t need to take.
6. The Deductions (Where the Money Leaks)
This is the section that makes mineral owners the angriest. You’ll see columns with headers like Trans (Transportation), Comp (Compression), Gath (Gathering), or Proc (Processing).
These are :Post-Production Costs.
Raw natural gas coming out of the ground is often wet and dirty. It can’t go straight into a sales pipeline. It has to be gathered, dehydrated (water removed), compressed (pressurized), and processed. The operator spends money to do this, and in many states (like Texas), they are allowed to pass a share of those costs on to you.
You might see a Gross Value of $1,000 for your share, but then see varying negative numbers:
- -$50 Transportation
- -$30 Compression
- -$60 Severance Tax
Suddenly your $1,000 check is $860.
Is this legal? It depends entirely on your lease. Some modern leases have “cost-free” clauses that prohibit these deductions. Older leases usually allow them. If your statement shows heavy deductions but your lease says “no deductions,” you might be owed significant money.
We’ve seen cases where an operator accidentally applied a generic pay deck to a specific owner, charging them fees they were exempt from. They won’t fix it unless you catch it.
7. The Adjustment Codes
Every now and then, you’ll see a line with a negative volume and negative revenue. It looks like they are taking money away from you.
Look for a code column labeled Type or Adj.
- R (Reversal): They are wiping out a previous entry because it was wrong.
- B (Booking) or C (Correction): They are re-entering the correct data.
This often happens when they estimate production one month and get the precise meter readings later. It’s annoying, and it makes the accounting messy, but it’s standard practice. However, if you see constant reversals every single month, it’s a sign the operator’s accounting department is struggling.
8. The Bottom Line: Net Value
This is the column on the far right. This is Gross Value minus Taxes minus Deductions.
Net Value is what gets printed on the check.
Red Flags: When to Call the Operator
You don’t need to analyze every penny every month. But you should do a 5-minute scan for these red flags:
- Sudden Volume Drops: Prices crash all the time, but volume (barrels of oil) usually declines largely on a smooth curve. If your well produced 1,000 barrels in January and 100 barrels in February, ask why. The well might have been shut in for repairs, or there might be a reporting error.
- New Deduction Codes: If you’ve been paid for years with zero deductions, and suddenly a “Marketing Fee” appears, pull out your lease. Operators change hands, and the new guys might try to charge fees the old guys didn’t.
- The “Suspense” Balance: Sometimes, at the bottom of the statement, you’ll see a line item for “Suspense.” This is money they owe you but aren’t paying you yet—usually because they need a signature, a death certificate, or an updated address. If you see money in suspense, call them immediately. That is your cash sitting in their account interest-free.
Why You Should Keep These Statements
We know they are clutter. But please, don’t throw them away.
If you ever decide to sell your mineral rights, these statements are your resume. They are the proof of what the asset performs. When a family office like ours values a property, we look at the trends in these statements—the decline rates, the specific deductions, and the pricing differential.
Without these papers, you are asking a buyer to guess. And when buyers guess, they guess low to protect themselves.
Furthermore, you need these for taxes. Mineral owners get a special tax break called :Depletion. It allows you to deduct a percentage of your gross income (usually 15%) from your taxes to account for the fact that the oil is running out. You can’t calculate that deduction accurately without the Gross Value number from these statements.
A Final Thought
Reading a revenue statement is about empowerment.
When you understand the breakdown, you stop seeing the check as a magical gift and start seeing it as revenue from a business you own. You start to see how market forces, operator efficiency, and lease terms impact your family’s bottom line.
It takes a little time to learn the layout, but once you do, you’ll never look at that perforated strip of paper the same way again. You’ll look at it like an owner.
If you have a statement that just doesn’t make sense—maybe the deductions seem high, or the math doesn’t add up—we are always happy to take a look. We aren’t accountants, but we speak the language, and we can usually spot a discrepancy in a few minutes.
Knowing what you own is the first step to making the right decisions about it.
:decimal-interest
This is the fraction of the well’s production that belongs to you. It is calculated based on how many acres you own, the total size of the drilling unit, and the royalty percentage in your lease. It is the most critical number to verify because even a tiny error here repeats on every single check forever.
:post-production-costs
These are expenses incurred after the oil or gas leaves the wellhead but before it is sold. This includes moving it (transportation), squeezing it (compression), and cleaning it (treating). Whether or not the operator can subtract these costs from your check depends entirely on the wording in your lease agreement.
:depletion
A tax deduction specifically for mineral owners. The IRS recognizes that oil and gas are finite resources—every barrel sold is one less barrel left in the ground. The depletion allowance lets you deduct roughly 15% of your gross mineral income from your taxes, which can be a significant saving.
:permian-basin
A massive sedimentary basin in West Texas and southeastern New Mexico. It is currently the heart of American energy production. If your check stub lists counties like Reeves, Ward, Martin, or Midland, your minerals are sitting in the Permian, which often commands premium pricing and attention from buyers.