دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. a thickened fluid that displaces drilling mud because of the difference in viscosity and weight between the spacer and the mud. Besides carrying lost circulation materials, spacers may be weighted with various inert materials such as fly ash and barite. 2. member of a pipeline construction gang who is responsible for assuring that the exact distance between the beveled pipe ends for a welding process to be used on the joint is maintained. Spacers strike a wedge into the interface between the pipe bevels and then maneuver them to an exact, uniform distance around the entire circumference.

n: A viscous fluid used to aid removal of drilling fluids before a primary cementing operation. The spacer is prepared with specific fluid characteristics, such as viscosity and density, that are engineered to displace the drilling fluid while enabling place