Mineral Appraisal Calculator 2023

Use our Mineral Appraisal Calculator to verify your well values for 2023.

This calculator is accurate for Marcellus horizontal wells in Brooke, Hancock, Marshall, Ohio, Tyler, and Wetzel Counties. Note: Our calculator is not accurate for year 1 of production. First-year well production must be annualized using a different formula.

Calculate your appraised value for each well on your real estate tax ticket. Your royalty interest value total for all wells on your county real estate tax ticket should equal the appraisal value on your notice and what you will be paying taxes on for 2023.