I don't know what state you are in nor who your producer is.
I am in Ohio and I got Division Orders from Chesapeake Energy which showed me my decimal interest, this decimal interest is easy to verify.
You should call your producer and ask for your decimal interest if you don't have it in writing from them, and then ask why it is changing.
in wv they issue pooling orders with your interest on it and it should not change on a monthly basis, it should only change when new orders are issued. know what yours is and compare that to your check stubs then call and ask what is going on and if they are shorting you or not
In Northeast PA the game the gas companies play is that they claim they marketed less than their share of the gas for a month so they need to "adjust" your payment decimal so that you get your proper share. This is a scam because it is not necessary and succeeds in giving you a number you can not verify. In our case they came back after a year or so and "adjusted" everything back to the beginning with another bogus payment decimal so that ....you guessed it.....the royalty check was reduced considerably. No way to verify except with an expensive audit.
Thank you all. This is very confusing. A recent statement send, which was a cumulative statement even has different production numbers from the statement that was sent reporting that same time period about a year ago. How can the production numbers change?