Patent ID: 7392855
Filing Date: 2008-07-01
Classification: E02D

Abstract:
1. A drive system for driving and/or extracting an elongate member, comprising: a support structure; a piston drive assembly comprising a piston member, where the piston member engages the elongate member; a hydraulic system operatively connected to the piston drive assembly, where the hydraulic system is capable of applying a drive force to the piston member, where a vibration drive assembly capable of generating a vibratory force, where the vibration drive assembly is operatively connected to the piston drive assembly; a first suppresser system operatively connected between the support structure and the vibration drive assembly, where the suppressor system resiliently opposes transfer of vibratory forces from the vibration drive assembly to the support structure; a guide system for guiding the elongate member along the drive axis; and a second suppresser system operatively connected between the support structure and the guide system, where the suppressor system resiliently opposes transfer of vibratory forces from the guide system to the support structure; wherein the drive system operates in