دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

buoyancy device on a Spar.

the weight of a string in air without the effect of buoyancy provided by wellbore fluids.

a component (e.g., bend stiffeners and buoyancy modules) used to control flexible pipe behavior.

n: the apparent loss of weight of an object immersed in a fluid. If the object is floating, the immersed portion displaces a volume of fluid the weight of which is equal to the weight of the object.

n: The upward force acting on an object placed in a fluid. The buoyancy force is equal to the weight of fluid displaced by the object. Buoyancy can have significant effects over a wide range of completion and workover activities, especially in cases in which

the amount of weight that is offset by lift from the fluid when the piece of equipment is immersed in the fluid.

n: the centre of gravity of the fluid displaced by a floating body (such as a ship or mobile offshore drilling rig).

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.