دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. an element of a level-control assembly designed to operate while partially or completely submerged in a liquid the level of which is controlled by the assembly. The buoyancy of the liquid activates the float and the control valve to which it is linked and modifies the rate of the inflow or the outflow of the vessel to maintain a preset level. 2. a drill pipe float. 3. a long flat-bed semi-trailer. A float collar also prevents backflow of cement during a cementing operation.