دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a short, threaded device made up on the bottom of drill pipe or tubing and used to screw into the box of a stand of drill pipe or drill collars lost in the hole. Once the pin tap is engaged, the lost pipe can be retrieved.

n: usually it uses as a tool to fish the tube fishings.