A method (1, 1A-1AT) of deploying and using at least one logging signal through existing conduits within a surrounding bore to empirically measure concentric cementation and cement bonding before and after cementation using an apparatus (12, 12A-12AT) associated with a tool string (8, 8A-8AT) to concentrically dispose an existing at least one inner conduit within said surrounding bore of a subterranean well, said method comprising: conveying at least one selectively arrangable tool string comprising at least one selectively actuatable downhole drive tool (3, 3A-3AT), at least one downhole placement tool (2, 2A-2AT) having at least one shaft and an axial displacement member extendable and retractable from said at least one shaft, and at least one cutting or displacing tool, and wherein the method is characterized by the steps of: actuating said at least one selectively actuatable downhole drive tool to operate said at least one downhole placement tool to place said at least one cutting or displacing tool within said at least one inner conduit; actuating said at least one cutting or displacing tool to cut or displace said at least one inner conduit proximally and concentrically within said surrounding bore, thereby forming a cut or space in said at least one inner conduit; circulating fluid between said at least one inner conduit and said surrounding bore for cleaning and bonding cement thereto after said cementation; and using said cutting or displacing tool to transmit at least one logging signal through said cut or space to measure about said surrounding bore before said cementation and to provide said concentric cementation and said cement bonding before and after said cementation. conveying at least one selectively arrangable tool string comprising at least one selectively actuatable downhole drive tool (3, 3A-3AT), at least one downhole placement tool (2, 2A-2AT) having at least one shaft and an axial displacement member extendable and retractable from said at least one shaft, and at least one cutting or displacing tool, and wherein the method is characterized by the steps of: actuating said at least one selectively actuatable downhole drive tool to operate said at least one downhole placement tool to place said at least one cutting or displacing tool within said at least one inner conduit; actuating said at least one cutting or displacing tool to cut or displace said at least one inner conduit proximally and concentrically within said surrounding bore, thereby forming a cut or space in said at least one inner conduit; circulating fluid between said at least one inner conduit and said surrounding bore for cleaning and bonding cement thereto after said cementation; and using said cutting or displacing tool to transmit at least one logging signal through said cut or space to measure about said surrounding bore before said cementation and to provide said concentric cementation and said cement bonding before and after said cementation. actuating said at least one selectively actuatable downhole drive tool to operate said at least one downhole placement tool to place said at least one cutting or displacing tool within said at least one inner conduit; actuating said at least one cutting or displacing tool to cut or displace said at least one inner conduit proximally and concentrically within said surrounding bore, thereby forming a cut or space in said at least one inner conduit; circulating fluid between said at least one inner conduit and said surrounding bore for cleaning and bonding cement thereto after said cementation; and using said cutting or displacing tool to transmit at least one logging signal through said cut or space to measure about said surrounding bore before said cementation and to provide said concentric cementation and said cement bonding before and after said cementation.