Mineral Rights Value Calculator
Describe the property, county and state, interest type, net acres if known, producing status, recent revenue, and the calculation question.
In a lot of states, a mineral deed covers everything underground. In Kentucky, it's genuinely common for coal, oil, and gas to have been severed into separate estates a century apart, and that history shapes every input that follows.
Kentucky's oil and gas activity splits geographically into two areas. Eastern Kentucky sits on the western edge of the Appalachian basin, historically the Big Sandy gas field and surrounding counties like Pike, Floyd, and Martin, an old, mature natural gas region with production dating back over a century. Western Kentucky sits on the eastern edge of the Illinois basin, oil-producing counties like Union and Henderson, another long-established but modest-scale conventional oil area.
What sets Kentucky apart from most states isn't the basins themselves, it's how often coal rights, oil and gas rights, and surface rights were sold off separately over the decades, sometimes by the same family selling coal to one buyer in the 1920s and later leasing oil and gas to a different party altogether. Before any calculator input matters, it's worth being certain which of those estates your deed actually conveys.
Some older Kentucky deeds use broad language covering all minerals, while others specifically list coal, oil, gas, or other substances, and courts have had to interpret ambiguous language in disputes over exactly this question more than once in the state's history. If your deed or the one your interest traces back to isn't explicit, a title review before running any value estimate isn't optional, it's the step that determines whether an oil and gas calculator even applies to what you hold.
Big Sandy field gas wells are, for the most part, mature and slow-declining, some having produced for decades with only gradual annual drops. That maturity makes decline rate a relatively knowable input, closer to low single digits annually for long-established wells than the steep curves of a new completion elsewhere. What moves income more in this region is Henry Hub gas pricing itself, since there's no oil credit, and local gathering and processing costs that get deducted before royalty reaches you.
Illinois basin-edge oil wells in western Kentucky counties tend to run small, similar in character to the stripper wells found across the broader Illinois basin in neighboring states, meaning modest monthly income and a gentle, already-mature decline curve. WTI-linked pricing drives the commodity input here rather than a gas benchmark, and buyer depth for small western Kentucky interests tends to run thinner than for a bigger, more visible asset.
Kentucky doesn't see the buyer competition that Texas, Oklahoma, or Louisiana basins attract, partly because interests here tend to be smaller and partly because the title complexity from severed coal and oil-and-gas estates adds diligence work a buyer has to price into their offer. None of that makes your interest worthless, it just means a realistic multiple should be entered with that thinner market in mind rather than borrowed from a hotter basin's numbers.
For a Kentucky interest, the most useful documents to have in hand before running a value estimate are your original or inherited deed, any lease or division order tied to current production, and recent royalty statements showing at least six months of history. If your interest passed through a family member without a formal probate proceeding, or if the property was involved in an older coal severance from decades ago, gathering whatever paperwork exists, even partial or old, gives a much clearer starting point than trying to estimate value from a county tax notice alone. Tax notices reflect assessed value for taxation purposes, not market value for a sale, and the two numbers can differ substantially.
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Mineral Rights Value Calculator
Describe the property, county and state, interest type, net acres if known, producing status, recent revenue, and the calculation question.