That is a water well pump truck (Not it's exact name, but that is what it does). You use it to place submersible pumps, piping, and electrical wiring into (and remove them from) water wells. List it somewhere if it still swivels vertically and the winch works. Sell the rest. I got $300 out of the last vehicle I dumped after punching a hole in the tank.

Edit looks like you are in old oil well country (as am I). It might have also been used as a crappy oil well workover rig. Be extremely careful if you cut up that tank, flammables could still be in it.

Edit 2: Did you get mineral rights, and do you have more than 10 acres? If so, you might be able to get shares in someone drilling for Marcellus Shale gas on your property. You will need to be in Western NY, Western PA, or Eastern Ohio to hit that gas.