دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the packer left in the well after cement ,but can be drilled later

n: a device on a retrievable or drillable packer that allows the packer to be set with an upward pull (tension);it is often used when not enough pipe weight is available to set the packer by applying downward force (compression).