DOWNHOLE TOOLS WITH ELECTRO-MECHANICAL AND ELECTRO-HYDRAULIC DRIVES

摘要

An apparatus to be conveyed into a wellbore. The apparatus includes a housing configured to be conveyed downhole and a drive member located in the housing. The apparatus further includes a drive unit configured to actuate movement of the drive member by selectively coupling to the drive member, wherein the coupling of the device to the drive member is controlled by applying an energy to a selected material in the device.