The Y-Tool is designed to be run with ESP below ESP packer. As the produced fluid leaves the ESP it flows through a pump sub and then joins the main production string through the Y-Tool profile that has been carefully designed to minimize flow erosion. The Y-Tool offsets the ESP in the well to provide a straight line conduit for wireline or coiled tubing tools to bypass the ESP. The Y-Tool has an upper connection for the production tubing and two lower connections, one for the ESP and the other for the bypass. A blanking plug is located in the bypass side in a special nipple to prevent recirculation of the pumped fluid. The blanking plug is removed prior to and after intervention. For logging operations, the blanking plug is replaced by a logging plug which allows real time or memory logging to be conducted whilst the pump is operating.