CPC Subgroup
E21B 29/08 Cutting or deforming pipes to control fluid flow
Full Title
Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground > Cutting or deforming pipes to control fluid flow