Dropped pipe in the well bore. Anyone got an ideas how to get it out?

So I was trying to get the pipe out of a 400 ’ well to change the pump. The cover was rusted and I had to break a piece off to get it open. When I broke it the pipe fell right into the well. I know I’m stupid.

Is there anything I can do to get it out?

or does this happen a lot and a professional would know how to help.