Working Interests
Every other type of mineral interest pays you and leaves you alone. A working interest sends you an invoice, sometimes a large and unexpected one, right alongside the check.
We steer most of our own family away from working interests, not because there's anything wrong with them, but because they're a genuinely different animal from the mineral and royalty interests most ranch families end up holding, and the surprise bill is the thing that catches people off guard hardest. A working interest is an operating interest, it bears its proportionate share of drilling, completion, and ongoing operating costs, in exchange for a larger share of production revenue than a royalty owner ever sees.
If you've inherited or acquired a working interest, or you're weighing whether to participate in one an operator has offered you, here's what that ownership actually involves once the well is producing, and why so many working interest owners eventually decide to sell.
Why a working interest pays more, and costs more
A typical royalty owner might receive an eighth to a quarter of production revenue with zero costs deducted for drilling or operating the well. A working interest owner receives their full proportionate share of production, but also pays that same proportionate share of every cost associated with drilling, completing, and operating the well, tank battery maintenance, workovers, plugging costs eventually, and routine lease operating expenses along the way.
In a strong-producing well, that trade favors the working interest owner considerably, more net income than a royalty on the same production. In a marginal well, or one that needs an expensive workover, the same trade can turn a working interest owner's month upside down with a joint interest billing invoice larger than the revenue that period, a real cash call rather than a paper loss.
The surprise bill that catches inherited owners off guard
This is the single most common complaint we hear from people who inherited a working interest without knowing what it was. A royalty check just shows up or it doesn't. A working interest generates a joint interest billing statement every month whether the well is having a good month or not, and if the operator needs to recomplete a well, replace equipment, or drill an offset well the interest participates in, that bill can run into real money with relatively little notice.
Owners who inherited a small working interest fraction, say from a relative who was an early investor or a working operator themselves, sometimes find themselves paying more in periodic assessments than the royalty portion of the same interest would have generated on its own, especially as an older well ages and needs more maintenance.
Non-operated working interests specifically
Most working interest owners, especially those who inherited a fraction rather than actively operating, hold what's called a non-operated working interest, meaning another company, the actual operator, runs the well day to day, and you simply receive your share of revenue and your share of costs as a passive participant without operational control. You still bear full financial exposure to those costs even though you have no say in operational decisions like whether to do a workover or how to run the field.
This combination, financial exposure without operational control, is exactly what pushes many working interest owners toward selling once they understand it, especially owners who never intended to be in the oil and gas operating business in the first place and simply inherited the position.
Selling a working interest
Working interests are valued on projected future net revenue after costs, not gross production, which means decline curves, remaining reserves, and expected future operating and plugging costs all factor into the number more heavily than they do for a royalty interest. Selling converts an asset with ongoing, sometimes unpredictable, cost exposure into a clean, final number, which is exactly what most non-operating working interest owners are looking for once they've lived through a few unexpected joint interest bills.
Questions We Would Ask If These Were Still Our Minerals
These are practical questions an owner can answer without arriving with a perfect title file or a commitment to sell.
Why did I get a bill instead of a check for my working interest?
Working interest owners pay their proportionate share of drilling, completion, and operating costs. If costs exceeded revenue that period, or a major expense like a workover occurred, a joint interest billing statement can arrive instead of a payment.
Can I just walk away from a working interest instead of selling it?
Not cleanly. Simply ignoring billing statements can lead to the operator pursuing the debt or placing a lien on the interest for unpaid costs. Selling to a willing buyer is generally a cleaner exit than abandoning it.
What's the difference between an operated and non-operated working interest?
An operated interest means you or your company runs the well's day-to-day operations. A non-operated interest means another company operates it and you simply share in the revenue and costs as a passive participant with no operational control.
How do you value a working interest differently than a royalty interest?
Working interests are valued on projected net revenue after future operating and plugging costs, not gross production, since the owner bears those costs directly, which typically makes the valuation process more detailed than a royalty interest.
I inherited a small working interest fraction I didn't know I had. What now?
Start by getting current on any outstanding joint interest billing statements from the operator, then get the interest evaluated for a possible sale if ongoing cost exposure isn't something you want to manage.
Tell us the county and state, how the minerals came to you, whether they are producing, and which records are close at hand.