Patent ID: 6615919
Filing Date: 2003-09-09
Classification: E21B

Abstract:
A well pipe extraction apparatus for removing a groundwater monitoring well fabricated from PVC pipe from the ground without separating and breaking said PVC pipe, said well pipe extraction apparatus comprising:a wire rope having a predetermined length; a soft eye formed at one end of said wire rope, said soft eye being removably coupled to a hook from an external hosting device; a knurled brass rod attached to the opposite end of said wire rope, said knurled brass rod having a cylindrical shaped body and a taper at an upper end thereof, said knurled brass rod having a plurality of grooves which extend from the lower end of said cylindrical shaped body to the taper of said knurled brass rod; said knurled brass rod being positioned within said PVC pipe at a bottom end of said PVC pipe, the grooves of said knurled brass rod receiving sand particles pored down said PVC pipe, said sand particles being wedged between the grooves of said knurled brass rod and an interior surface of said PVC pipe, locking the bottom end of said knurled brass rod to said PVC pipe to allow said external hoisting device to remove said PVC pipe from the ground without separating and breaking sad PVC pipe; and said PVC pipe being hoisted from the ground from the bottom end hereof to prevent separation and breakage of said PVC pipe as said PVC pipe is being removed from the ground by said external hoisting device.