I had several easements on my old property, and they are not such a great thing.
My property was dug up several times, down as far as 22 feet, with almost no notice to me.
Basically, for very little initial compensation, they have a right to do just about anything they desire, on that easement, forever.
My parents have a petroleum pipeline running through their property. It gets flown over twice a day. The minute you do anything, like plant a tree, or bring in a piece of digging equipment out, they show up.
For a one time payment to the previous owner, of a buck an acre in 1930 or 40, they have total control of 20 feet on either side of that pipe, and they are not at all reasonable about it.
The first thing I wanted to know before I bought this property, was if there were any easements.
Yep, the gas co. had contracted to store natural gas under mine, and all the neighboring properties for like $200/year, per property. So I accepted that, and they paid it for a few years. One day they sold to another company who said: "We will not abide by any contracts that the old co. signed".
They still store the gas under me, I just don't get paid now. If I ever decide to drill a well, I have to prove to them, that I am not tapping into the gas, that they are not paying to store under me. ARG....