دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a dimensionless value expressing the roughness of the pipe.

n: movement of the soil resulting from alternate thawing and freezing. Frost heaving generates stress on vertical support members of pipelines in the Arctic and, by extension, on the pipe itself.

a foam with very high internal gas volume, usually 90%+ gas. High viscosity and often very stable.

formation saver valve. A check valve that prevents fluids from reaching the formation.

n: 1. diesel fuel.2. heavier liquid hydrocarbons. such as bunker oil, that is used to fuel turbines on a ship or other vessel

one of many refined petroleum oils such as heating oil, diesel, etc.

n: a bottomhole assembly. usually made up of drill collars and a stabiliser just above the bit, that can be used to increase hole angle. In holes inclined 3 degrees or more off vertical. the stabiliser acts as a fulcrum;the drill collars above the fulcrum sag toward the low side of the hole, forcing the bit toward the high side and increasing hole angle.

n: a bottome hole assembly designed to build angle.

n: a inspection of the drill including visual examination,drift test and end face test and a completely inspection of vertical and horizontals drawback.

n: non-resistance view of A type mast

n: clack valve that valve orifice without hindrance after valve is opened.

n: all the other architectures are similar to reverse circulation junk basket except valve architecture.