دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A one way valve installed at the bottom of drill pipe and above drill bit. Allowing drill fluid flowing from top to bottom in drill pipe.

n: 1. a section of pipe or fitting used to join pipe to pipe or to a vessel. 2. a place in electrical circuits where wires join.3.the action of adding a joint of pipe to the drill stem as drilling progresses.

n: the joining of a section of drilling pipe to another

n: each drilling pipe packaged by rubber protective case,usually tied inside of the casing

n: a joint used to contain the drill pipe safety valve and connected to the drilling pipe

n: the instrument installed on the standpipe and used to disply the pressure of the fluid in the drilling pipe

n: a kind of valve joined to the top of the drilling pipe ,and used when there is no inverted valve or the inverted valve is out of work in the pipe

n: a leakproof part in the blowout preventer ,that can seal the drilling pipe and the collar annular

n: the tool assebly affecting the rock breaking,composed with the bit,drilling pipe,movable circle,

n: the number of hours when the drilling pipe rotates during drilling

n: a kind of jar desenting down the hole while drilling used for jam release when the bit or the drilling pipe are jamed