دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The rubber accessory used for casing two-stage cementing.

n: A kind of cementing method in deep well. The cement slurry is pumped into the wellbore continually by two-step.

n: originally a trademarked name. It is a stage cementing tool. used in selective zone primary cementing.

n: see two stage cementing.

using more than one stage of cement to get more complete cement coverage of the annulus.

n: see two stage cementing.

n: a device that pem1its cement to be displaced in stages at two or more points above the bottom of the string. Instead of all the cement being pumped out the bottom, a stage tool allows some of the cement to be pumped out at several points above the bottom. Used in cases in which a long column of cement might cause formation breakdown if the cement were displaced from the bottom of the string.

n: a kind of common cement method which is achieved by the box coupling placed in the casing string