دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a type of mechanism in a packer or a tool in which tubing rotation moves the tools mandrel through a series of motions, similar to a letter J, to set and release the tool.

a pin and groove assembly that keeps a tool in the unset position while running and then can be worked or “Jayed” to operate the tool. Common in retrievable packers and liner hangers.