دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to plug a well inadvertently with proppants during formation fracturing. Sanding out is usually the result of a slowed fracture-fluid velocity, or screening effect, which allows the proppants to become separated from the fluid instead of being carried away from the wellbore. Also called screening out.

n: the tendency of proppants to separate from fracture fluid when the speed, or velocity, of the fluid is low.

the tendency of proppants to segregate in the fluids due to density effects when the fluid velocities drop below turbulence.