How do i find out the natural gas usage on well for past years?

I have royalties on wells in PA. and they have been using the gas off them for years. How can I find out the quantity of gas and get them to pay me? They know that I am on the deed. I have heard that they want to sell the lease - can I put a lien on it? Would appreciate any advice.

Pennsylvania production data can be gathered from the state. There is a catch in that operators only have to report production data every five years, so it is not likely you’ll get current information. A link to the Pennsylvania Geologic Survey should help:

As for your share, that can be more complicated depending on how much of the unit you own.