Natural Gas Royalty Estimate Here is the data that you entered Your royalty rate. $0.00 Average wellhead gas price. Average well production rate in millions of cubic feet per day. Acres you own within the well's production unit. 1 Number of acres in the well's production unit. $0.00 Your expected royalty payment per MONTH (before expenses). Calculate another royalty Don't assume that you are rich yet. Learn about natural gas well decline rates This information is provided by Geology.com for entertainment purposes. The amount of your actual royalty can differ significantly from what is shown above. The royalty payment above is based upon the information that you provided. It includes assumptions which might not fully represent the conditions of your lease/royalty agreement and market conditions at the time your gas goes to sale.