Imagine you own a house with your estranged cousin. You want to rent it out. He wants to leave it empty. In the world of real estate, you’re stuck. You usually have to agree.
In the world of mineral rights, the rules are different. And usually, much harsher.
If you own a fraction of the minerals under a tract of land—say, 20 acres out of 600—and your cousin owns the rest, you are legally joined at the hip. If he signs a lease with an oil company and you refuse, the oil company can often drill anyway. They don’t need your permission. They don’t need your signature.
Suddenly, you are in business with a massive corporation you didn’t choose, operating under a set of accounting rules you didn’t write. This is the doctrine of :mineral cotenancy, and it is capitalism’s strangest group project.
There are no board meetings. There are no veto rights. There is just cash flow, conflict, and a mountain of accounting that usually leaves the unleased owner wondering where their money went.
The “Free Rider” Problem
Here is the scenario we see constantly at our office. A grandfather leaves 640 acres to three children. They leave it to their children. Now, twelve cousins own the minerals.
An operator (the oil company) comes knocking. Ten cousins sign the lease. Two cousins—let’s call them the holdouts—refuse. Maybe they think the offer is too low. Maybe they just don’t open their mail.
The operator has a choice. They can walk away (unlikely if the geology is good), or they can rely on the legal principle that any single cotenant has the right to extract minerals.
As noted in legal analysis by the Texas Bar Journal, a developing cotenant (or their lessee) can drill without the consent of the other owners. They take 100% of the risk. They put up 100% of the money.
Because the holdout cousins didn’t sign a lease, they are considered “unleased cotenants.” They haven’t given up a royalty. Technically, they still own their full share of the oil.
This sounds fantastic on paper. Why sign a lease for a 20% or 25% royalty when you can stay unleased and keep 100% of your share?
Because 100% of zero is zero. And until the well pays for itself, zero is exactly what you get.
The “Net Profits” Trap
When you sign a lease, you get a royalty check from the first barrel of oil produced. It doesn’t matter if the well cost $10 million or $100 million. You get paid off the top (gross production), free of drilling costs. We covered the mechanics of this in our guide to reading your royalty statement.
When you don’t sign a lease and become a non-consenting cotenant, the math flips.
You are now a “carried interest.” The operator fronts your share of the costs. In exchange, they are allowed to keep all of your revenue until they have recovered those costs. This is called “payout.”
According to the Texas A&M Real Estate Center, the unleased owner receives the value of the minerals less the necessary and reasonable costs of production and marketing.
This creates an involuntary partnership where:
- Risk is privatized: The operator puts up the cash.
- Upside is shared: But only after the operator gets their money back.
- Control is one-sided: The operator decides what counts as a “cost.”
The Brutal Math of Participation
Let’s run the numbers. Mineral owners often tell us, “I’m holding out for a better deal.” But they need to see what the “no deal” option actually looks like.
The Scenario:
- You own a 10% interest in a section of land.
- The operator drills a well that costs $8,000,000.
- The well is successful and generates $12,000,000 in revenue over two years.
If You Signed a 25% Royalty Lease: You own 10% of the land, so your “net revenue interest” is 2.5% (10% x 25%). You get paid on the gross revenue immediately. Your Check: $300,000. (Plus, you likely got a lease bonus upfront).
If You Refused to Sign (Unleased Cotenant): You own 10% of the well. Your share of the revenue is $1,200,000. However, you also owe 10% of the cost: $800,000. Also, the operator deducts monthly operating expenses (LOE), saltwater disposal fees, and marketing costs. Let’s say those run another $100,000 for your share over two years.
The Calculation: $1,200,000 (Revenue) - $800,000 (Drilling) - $100,000 (OpEx) = $300,000.
In this scenario, after two years of waiting, you end up with roughly the same amount of money. But you didn’t get a lease bonus. You didn’t get paid for the first 18 months while the well was paying out. And crucially, you had to trust the operator’s accounting.
The Litigation Menu
That math assumes everyone agrees on the numbers. In the real world, they rarely do.
This “involuntary partnership” is fertile ground for lawsuits. The most common fights we see revolve around what the operator is allowed to deduct.
As outlined in legal memos on development rights, the operator can deduct “reasonable” costs. But what is reasonable?
- Is the salary of the geologist in Houston a deductible cost for your well in Midland?
- Is the road they built to the pad a drilling cost?
- Did they pay market rate for the fracking crew, or did they hire their own subsidiary at a premium?
If you are a small owner who inherited rights, you do not have the staff to audit an oil major. You generally have to take their word for it. We have seen operators carry unleased owners in a “penalty status” for years, claiming the well hasn’t paid out, while royalty owners next door are cashing checks every month.
How This Happens (The 5 Scenarios)
Most people don’t choose this headache. It finds them.
- Generational Dilution: Grandma owned 100%. Now 32 heirs own 3.125% each. The landman finds 28 of them. You are one of the four he missed. The well gets drilled. You are now an unleased cotenant.
- The Expired Lease: You leased three years ago. The lease expired. The operator drilled a week later, assuming they could renew you. You refused. Now you are unleased on a producing well.
- The “Ghost” Owner: Someone in the family tree can’t be found. The operator sets aside their share of the money in a suspense account.
- The Bad Joinder: Some owners signed a Joint Operating Agreement (JOA), creating a formal partnership. You didn’t. Now there are two sets of rulebooks for the same well.
- The Title Defect: You think you own 20 acres. The operator thinks you own 10. They lease you for 10 and treat the other 10 (the disputed amount) as unleased.
The Nuclear Option: Partition
There is a darker side to cotenancy disputes. If the relationship between owners becomes too dysfunctional—if the operator simply cannot deal with a fragmented ownership group—they can sue for :partition.
This is a forced sale. The court orders the property to be sold (often on the courthouse steps) and the money split among the owners.
It’s rare in mineral rights compared to surface real estate, but it happens. It is the ultimate way to dissolve the “involuntary partnership.” If you are a small owner holding up a $20 million development, the court may view a forced sale as the only equitable solution.
A Practical Playbook
If you find yourself in this situation—or if you suspect a relative has left you an unleased interest—you need to verify your status immediately.
Don’t rely on the check stub. If you are receiving payments as an unleased cotenant, your check stub will look different. It might show massive deductions that wipe out your revenue. This isn’t necessarily fraud; it’s the cost recovery mechanism at work.
Demand the payout statement. You have the right to ask the operator for a “payout statement.” This document shows exactly how much the well cost, how much revenue it has generated, and how close you are to getting a check.
Know your leverage (or lack thereof). If the well is already drilled, your leverage to negotiate a lease is low. The operator has already taken the risk. They have no incentive to give you a bonus now. However, sometimes they prefer to convert you to a royalty owner just to stop the accounting headache.
The Family Office Perspective
We buy mineral rights for a living. We often buy these “messy” interests because we have the legal and accounting teams to fight the battles that individual families shouldn’t have to fight.
When we look at an unleased interest, we aren’t just looking at the geology. We are looking at the accounting ledger. We are calculating how long until payout. We are checking if the operator is inflating their costs.
For a family, being an unleased cotenant is stressful. It’s a distinct feeling of being taken for a ride. For a family office, it’s just a math problem we know how to solve.
If you are stuck in a partnership you didn’t agree to, with an operator who treats you like a nuisance rather than an owner, it might be worth having a conversation about selling that partial interest. Sometimes, the best way to win a game with rigged rules is to cash out your chips and leave the table.
At the very least, you should know what your position is actually worth—before the next “deduction” eats your check.
:mineral-cotenancy
A legal relationship where two or more parties own undivided interests in the same property. In minerals, this means you own a percentage of every drop of oil, but you don’t own a specific “spot” on the map. It forces you into a relationship with the other owners whether you like them or not.
:carried-interest
An ownership share in a well where the owner does not pay drilling costs upfront. Instead, the operator pays the costs on the owner’s behalf and repays themselves out of the owner’s future production revenue. You are being “carried” by the operator’s capital.
:partition
A legal action where a court divides property owned by multiple people. In minerals, since you can’t easily slice up an oil reservoir, this usually results in a forced sale of the mineral rights, with the cash proceeds divided among the owners.
:payout
The specific point in time when a well’s revenue equals the total cost of drilling, completing, and operating it. For unleased owners, this is the magic date when they might actually start seeing a profit. Operators and owners often fight over when this date actually occurs.