دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The technological process that increase the deviation angle with building assembly and angle build-up treating.

n: The combination of drill tool that decreases the deviation angle in directional drilling.

n: The combination of drill tool that holds the deviation angle in directional drilling.

n: a type of thermometer used on oil tanks. The graduated part of the thermometer is angled at least 90ﾰ from the temperature-sensitive portion. The angle conforms to the shell of the tank and permits easy reading of the instrument.

the mechanism that provides pressure isolation between each casing hanger and the wellhead housing.

n: The package assembled by several special devices. It can achieve some function.

n: The organization that automatically controls the intake yield of gas cut drilling fluid according to the level changing of drilling fluid in the deaeration room.

bottom hole assembly.

n: any assembly of pulleys on a common framework;in mechanics. one or more pulleys. or sheaves. mounted to rotate on a common axis. The crown block is an assembly of sheaves mounted on beams at the top of the derrick or mast. The drilling line is reeved over the sheaves of the crown block alternately with the sheaves of the travelling block. which is hoisted and lowered in the derrick or mast by the drilling line. When elevators are attached to a hook on a conventional travelling block. and when drill pipe is latched in the elevators. the pipe can be raised or lowered in the derrick or mast. See crown block, travelling block.

n: the assembly of well-control equipment including preventers. spools. valves. and nipples connected to the top of the wellhead.