Sell Mineral Rights in Colorado

Ask three Colorado mineral owners what their interest is worth and you might get three different starting points, because Weld County oil and Garfield County gas are not the same asset.

Colorado has two mineral-producing regions that behave almost nothing alike. The Denver-Julesburg, or DJ, basin runs across Weld County and the northeastern plains, and it's an oil-heavy horizontal shale play with active operators still drilling multi-well pads. The Piceance basin sits on the Western Slope, mostly Garfield and Rio Blanco counties, and it's a mature, largely dry-gas basin where activity has slowed considerably from its 2000s peak.

If you own minerals in Colorado, figuring out which basin you're in, and how active it currently is, matters more than almost any other single fact before you touch a calculator.

DJ basin: an oil play with real decline risk

DJ basin horizontal wells behave like most modern shale wells: strong initial production followed by a steep decline in the first one to two years, then a longer flattening tail. That means your decline rate input should not be a flat average across the well's life, it should reflect where the well currently sits in its curve. A well eighteen months into production is going to see income fall faster over the next year than a well that's already seven years in and largely plateaued.

Weld County has also seen real setback and permitting debate in recent years around drilling near homes and schools, which affects buyer appetite for new units even while it doesn't necessarily touch existing producing interests. If you're evaluating undeveloped DJ basin acreage rather than an existing producing interest, that regulatory backdrop belongs in your read of the buyer multiple, since new development carries more permitting uncertainty than it did a decade ago.

Piceance basin: mature gas, thinner activity

Piceance gas wells are a different story: mostly mature, mostly dry gas, with far less new drilling than during the basin's peak years. That maturity actually simplifies your decline rate input, since most producing wells have settled into a long, slow tail rather than an unpredictable early curve. The tradeoff is thinner buyer depth, because fewer operators are actively acquiring in the Piceance compared to the DJ, and Henry Hub gas pricing without an oil credit means your monthly income is more exposed to gas price swings than a DJ basin oil interest would be.

Running the numbers for each

For a DJ basin interest, decimal interest comes off your division order for the specific pooled unit, monthly income should be averaged over a shorter recent window given how quickly production can shift, decline rate needs to reflect the well's actual current stage, commodity price runs on WTI-linked Colorado sweet crude pricing, and buyer multiple tends to run stronger given more active buyer competition in the basin. For a Piceance interest, decimal interest and monthly income work the same way, but decline rate should assume a mature, flatter curve, commodity price is a Henry Hub gas benchmark, and buyer multiple should be treated more conservatively given the smaller pool of active buyers.

Common mistakes worth avoiding

The most common mistake we see is applying one basin's expectations to the other, treating a legacy Piceance gas check like it should behave the way a fresh DJ basin oil well does, or assuming a brand-new DJ basin completion will hold its early production rate the way an old Piceance well would. Both mistakes push a calculator's output in the wrong direction. It also helps to check which specific unit and formation your well is completed in, since some DJ basin acreage has multiple stacked pay zones with separate spacing units, and confirming the right one keeps your decimal interest input accurate.