I leased my mineral rights in Dunn County in May 2007. They started drilling this month.
The oil business can be a dog eat dog world. You need to protect yourself and get informed. Here is the link to the ND maintained site:
https://www.dmr.nd.gov/oilgas/
By the way, ND has pooling statues. Pooling agreements are usually made up of 1 or 2 sections (640 or 1280 acres) blocks of land. It is all highly controlled and watched by the state. Noone is drilling under anyones land and stealing their oil.
I have other links if anyone is interested.