دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. a substance added to drilling mud to increase viscosity without adding clay or other thickening material. 2. an additive that assists in getting greater yield from a sack of cement. The extender acts by requiring more water than required by neat cement.

n: a cement or cement system that handles stable slurries having a density less than that of neat cement. Lightweight cements are used in low-pressure zones where the hydrostatic pressure of long columns of neat cement can fracture the formation and result in lost circulation.

n: a cement with no additives other than water.

n: Cement that has no additives to modify its setting time or rheological properties.

cement slurry without additives.

n: the cementing that make up of fresh water and pure cement.