Lease money question

When we signed our lease with meadows oil and gas a couple of years ago we were paid roughly 800 dollars per net acre for the 33.3 acres we thought we had. Turns out now that production has began we really had 150 net acres we are receiving royalties on. Can we go back and request the extra leasing money from meadows on the other 100 plus acres. Or do we just miss that?

Go ahead and try. You may not be successful, but use the Title Opinion from the DO to ask for it. Use certified return receipt mail.