دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the threaded portion of the top of the bit that is screwed into the drill collar. Also called the pin.

n: 1. the male threaded section of a tool joint. 2. on a bit, the threaded bit shank. 3. one of the pegs that are fitted on each side into the link plates (side bars) of a chain link of roller chain and that serve as the stable members onto which bushings are pressfitted and around which rollers move. See wrist pin.

n: the male section of threaded connection.

n: 1. the flat portion machined on the base of the bit shank that meets the shoulder of the drill collar and serves to form a pressure-tight seal between the bit and the drill collar. 2. the flat portion of the box end of the pin end of a tool joint;the two shoulders meet when the tool joint is connected and form a pressure-tight seal.

a surface on a downhole tool on which an upper tool or piece of equipment will stop.