Bette, you don’t want to sell anything with 2 new wells coming on if you don’t have to. Collect the royalty for a couple years until production slows. The acres will still maintain their value according to my observations the difference is you will have gotten the cream off the top in royalty and the purchase price.
M Barnes brings up the most pertinent point, other formations, the possibility, depending on exactly where you are, of 10 to 15 wells eventually.
I think you were referring to McKenzie County? I have acreage there myself and received an offer of $10,000 per acre if my royalty was 3/16 or better. Bette, if you can give the legal description found on your lease, I and others would be able to advise you on what the future may hold for your acres. Welcome to the forum.