دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: a device, operated by air or hydraulic fluid, that fits into the opening in the rotary table when the drill stem must be suspended in the wellbore (as when a connection or trip is being made). Automatic slips, also called power slips, eliminate the need for roughnecks to set and take out slips manually. See slips.

n: A tool operated by pneumatics or hydraulic pressure.Used for chafing the drill stem when pipe connection or tripping.

n: the take out cores length is equal to core run,that is a hundred percent yield.

n: a nometrievable type of packer that is very reliable but must be drilled or milled out for removal. Most permanent packers are seal-bore packers.

n: after this kinds of packer lower in hole , it no longer take out. Drilling it or milling out when it no using. Most of which uses naked well.

a reliable packer designed and intended to be left in place for a long period of time that seals and holds pressure or resists movement from both directions.

v: to remove a joint or stand of pipe from the drill stem.