Patent ID: 8528630

Claim:
A method of sealing a subterranean borehole or one or more conduits thereof, comprising: lowering a cutting assembly driven by a downhole motor or actuator into said subterranean borehole or one or more conduits thereof; forming one or more cuts with said cutting assembly in said one or more conduits in a downhole cutting zone in said subterranean borehole to sever or weaken by cutting for removing at least a portion of said one or more conduits thereof from or within said downhole cutting zone and leave a space; and injecting fluid into an annulus region of said subterranean borehole or one or more conduits thereof to form a higher pressure end thereof to act toward a lower pressure end thereof to, in use, operate said downhole motor or actuator and deposit a settable sealing material in said space for allowing said settable sealing material to set.