دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a submersible pump configuration in which the pump and die motor sections are reversed, with the pump intake through a stinger at the bottom of the unit. It is used where casing size prohibits the desired production volume because of tubing friction loss or pump diameter restriction.

n: a reduction in the pressure of a fluid caused by its motion against an enclosed surface (such as a pipe). As the fluid moves through the pipe, friction between the fluid and the pipe wall and within the fluid itself creates a pressure loss. The faster the fluid moves, the greater are the losses.

n: friction loss. See pressuredrop loss.

n: see friction loss.

n: the pressure lost in a pipeline or annulus due to thevelocity of the liquid in the pipeline, the properties of the fluid, the condition of the pipe wall and the alignment of the pipe. In certain mud-mixing systems, the loss of head can be substantial.

n: the slight increase in mud weight used to offset friction losses that occur as the mud is circulated through the riser in a subsea blowout preventer system.