Two Different Things.
A critical factor that mineral estate owners must understand before selling mineral rights is that once this is done, the surface and the ground beneath it become two separately controlled entities.
You may own the land and retain the right of selling oil rights to produce the minerals within your land; however, once you do, the surface and land legally become two different elements throughout the length of the contract with the buyer.
The reason is that in order for the mineral estate buyer to be able to access the oil or gas, they must explore and drill through the surface. This may seem like common sense; however, what many estate owners do not realize is the two significant ways this arrangement can affect their land: control over the surface and land value.