I have a pump and drop pipe in a well that I want to pull. Of course I could hire it out and may have to. There are several reasons and one huge reason (unstated) that I want to avoid that approach.
I have in the past lifted the pump and drop pipe a little (a couple of ft or so) for routine mx at the well head.
This time I want to pull it entirely.
There is no safety cable attached to the pump.
The drop pipe is 2 inch threaded Schedule 120 PVC 1120 pipe.
The pump is a 3 phase 460/480 volt motor on a 50 gpm pump.
Guessing on the weight of the motor and pump but maybe 30-40 lbs or so
The 280 ft drop pipe - a little over 300 lbs plus 14 brass couplings at a pound or so
Weight of water in pipe since there are check valves is in the ballpark of 380 lbs
Bottom line I am not going to hand pull 700 to 750 lbs of drop pipe from this well.
With the drill casing being about 2 ft above grade I figure each lift will be about 24 ft to the next coupling.
A tripod that is 24-26 ft tall or a boom of some nature (2 beam) are ideas I have but managing the lift of the structure into position for the tripod or the boom have issues of concern. However the biggest concern, not being a structural engineer, is stoutness of the structure. I don't need it to collapse under the weight and injure a human nor do I need it to drop pipe and pumps in the well. I also don't want to over engineer it so that the weight of the structure makes the lift of the structure impossible either.
Any ideas would be appreciated on a lifting design for this.
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