Patent ID: 6505684
Filing Date: 2003-01-14
Classification: E21B,F15B

Abstract:
A ratchet assembly for incremental manipulation of one or more downhole devices, the ratchet assembly comprising:(a) a hydraulic distributor having an inlet port, one or more first outlet ports, one or more second outlet ports, and a toggle valve, the inlet port for receipt of pressurized fluid, the toggle valve responsive to the pressurized fluid to selectively distribute the pressurized fluid to the one or more first outlet ports and the one or more second outlet ports; and (b) a ratchet assembly having at least one driving rod, the ratchet assembly incrementally moving the at least one driving rod in a first direction in response to pressurized fluid through the one or more first outlet ports and in a second direction in response to pressurized fluid through the one or more second outlet ports, the at least one driving rod for manipulating the one or more downhole devices.