Hello everyone, new user here. We are replacing our oil fired heating system and were looking into air source heat pumps when I stumbled across our old abandoned well. After several hours of angle grinding I was able to get the well cap off. I haven't figured out the depth of the well or anything yet, but I was wondering before going any further if it is possible to use a well as a standing column well if it doesn't go to bedrock (which is a high likelyhood in our neck of the woods). The well would only be used for the heat pump. If it is plausible, my second question is, since I would have to excavate about 50 feet for a return line to the well anyway, is there any benefit to installing the return line in a slinky style before the water returns to the well? Thanks!