How Minerals Are Appraised

An appraisal is a process, not a phone call, and understanding the steps lets you judge whether an offer was actually underwritten or simply pulled from a template.

We are a buyer and connector, not a licensed appraiser, and nothing here should be read as a formal appraisal. What follows is a description of the underwriting standards a disciplined buyer applies before putting a number in front of an owner, so you can compare that standard against whatever offer lands in your mailbox.

Institutional underwriting of minerals borrows methods from three fields at once: petroleum engineering for the reserve and decline work, real estate and finance for the discounting, and title work for confirming the buyer is even valuing the right interest. Skipping any one of the three produces a number that looks confident but is not supportable.

Decline-Curve Analysis for Producing Interests

For a producing well, the starting point is production history: monthly volumes going back as far as available, plotted to identify whether the well is still in early steep decline, has flattened into a longer hyperbolic tail, or has reached terminal decline. That curve is then projected forward against a reasonable economic limit, and the projected volumes are converted to revenue using a price deck rather than a single day's spot price, because a single day's price says almost nothing about a twenty-year stream.

The remaining value is discounted back to present terms at a rate that reflects the risk of that specific well and formation, not a generic industry rate. Two wells in the same field can carry different discount rates if one has a longer, more predictable history and the other is newer and noisier.

Type-Curve Estimation for Non-Producing Interests

Without production history, a buyer has to borrow a type curve from analogous wells nearby, adjusted for lateral length, spacing density, and the operator's typical completion design in that part of the play. This is inherently less precise than working from your own history, which is why non-producing interests are quoted as a wider range rather than a tight figure.

Timing risk gets layered in separately: an operator with permits already filed on your section is a very different underwriting case than an operator with acreage held but no filed activity in years. A disciplined buyer will ask which situation applies before finalizing a range, and will say so plainly rather than pricing every undeveloped tract as if a rig were arriving next quarter.

Spacing-Unit and Net Revenue Interest Review

Before either method above gets applied, the underwriter confirms two things from your documents: the net mineral acreage you actually own within the spacing unit, and your net revenue interest after any royalty burdens carved out ahead of you. Getting either number wrong changes the valuation by a multiple, not a rounding error, which is why serious buyers ask for a deed and division order before quoting a firm figure rather than after.

Sensitivity Checks and Range-Building

A careful underwriter runs the same well or unit through a low case and a high case, varying commodity price, decline rate, and timing assumptions, and reports the resulting range rather than a single point estimate. If a buyer's number does not move at all when you ask what happens under a slower development scenario, that is usually a sign the range was never actually modeled.

Why the Same Method Produces Different Numbers Across Buyers

Two firms using an identical decline-curve method can still land on different figures because they apply different discount rates, different price decks, or different assumptions about how long a well will remain economic before reaching its limit. This is not evidence that one buyer is wrong and the other right; it reflects genuinely different risk tolerances, which is exactly the kind of thing worth asking a buyer to explain rather than treating as a black box.