DOWNHOLE TOOL HYDRAULIC RETRIEVER

摘要

A downhole tool hydraulic retriever is provided that includes a stroking unit comprising a hydraulic cylinder, a piston body at least partially disposed within the hydraulic cylinder, and a piston rod extending from the piston body. The downhole tool hydraulic retriever also includes first and second packer cup assemblies configured to translate axially with respect to each other. In addition, the downhole tool hydraulic retriever includes a pressure intensification module comprising sequencing valves and hydraulic distribution lines configured to divert pressure to the first packer cup assembly when the piston body is at a beginning of a stroke within the hydraulic cylinder, and to divert pressure to the second packer cup assembly when the piston body is at an end of the stroke within the hydraulic cylinder.