Mineral Rights Value Calculator
Describe the property, county and state, interest type, net acres if known, producing status, recent revenue, and the calculation question.
An overriding royalty interest lives inside a specific lease, not underneath the land itself, which means the single most important fact about your ORRI is when that lease ends.
ORRIs get created out of the working interest, not the mineral estate, typically when a landman, geologist, or original lessee carves out a royalty for themselves as part of putting a deal together, or when an operator assigns one to a broker or finder. Because it's carved from the leasehold rather than from the minerals directly, an ORRI has a built-in expiration date baked into its structure that a regular royalty or NPRI doesn't share.
That expiration is the single biggest thing separating ORRI valuation from every other interest type, and it's where owners most often overvalue what they hold.
An ORRI exists only as long as the specific lease it was carved from stays in force, held by production, an extension, or its primary term. When that lease terminates, for any reason, the well stops producing, the operator lets it expire, the leasehold is abandoned, the ORRI terminates with it and reverts to nothing. There's no fallback to the underlying minerals the way a mineral owner has.
This means an ORRI's remaining value is capped by the well's remaining productive life under that lease, full stop, regardless of how much oil and gas might theoretically still be recoverable from the formation. A well with strong current production but only two years left before the lease's held-by-production status becomes questionable is worth noticeably less as an ORRI than the same production stream would be worth as a straight royalty interest with no such ceiling.
Comparing two interests with identical current royalty income, one an ORRI and one a standard royalty interest, the ORRI is worth less because of that termination risk. A buyer pricing an ORRI has to factor in both decline (which affects both interest types equally) and the possibility that the underlying lease itself ends before the well's economic life is spent, cutting off income entirely rather than just declining toward it.
The size of that haircut depends on how secure the lease looks: a well with strong, established production and no signs of the operator walking away carries a smaller discount than an ORRI tied to a marginal well where held-by-production status is genuinely uncertain. A well operated by a company with a pattern of maintaining marginal wells rather than plugging them promptly also supports a smaller discount than one operated by a company known for walking away from thinning production quickly.
Find the assignment document that created your override, it'll show the fraction, which lease it's carved from, and any specific termination language. Then check the underlying lease's status: is the well still producing, is it held by production or approaching the end of a term, and has the operator shown any signs (plugging notices, reduced activity) of winding down.
Our calculator asks for the same production and decline inputs as a royalty interest, but flags the lease-life consideration specifically for ORRI so the range reflects that extra risk rather than pricing it like an interest with no expiration.
The sale conveys your override, not any interest in the minerals themselves, and the buyer takes on the same lease-termination risk you carry today. Because ORRIs are contractual carve-outs rather than real property conveyed by deed in every state, title review sometimes runs differently than a mineral deed; we'll walk you through what your state and situation requires.
Pricing typically comes in below a comparable royalty interest for the reasons already covered, but that doesn't mean an ORRI is a poor sale candidate. A strong current check on a well with a secure, long-standing lease can still generate a reasonable offer, and getting a documented range before you talk to any buyer is the same first step regardless of which interest type you hold.
Range mechanics
Mineral Rights Value Calculator
Describe the property, county and state, interest type, net acres if known, producing status, recent revenue, and the calculation question.