دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see guide shoe. casing slip n: see spider.

n: A short section of steel filled with concrete and rounded at the bottom. This is installed on the bottom of the casing string to guide the casing past any ledges or irregularities in the borehole. Sometimes called a guide shoe.

a tapered guid shoe on the bottom of a casing string to assist in passing ledges and dog-legs in the wellbore.

n: see spider.

n: A tool for seizing casing string when running casing.

n: The catcher consisted by cup spring base and leaf springs.

n: A kind of high intensity adapter socket with long slips. Used to suspend heavy long casing for deep well.

n: a kind of automatic lifting tool which can run and pull two csaings with accessories or two oil tubes at the same time

a fibrous form of illite, also described as spider-web illite. The hairs or fibers randomly project into the pore space. In most cases, the clay is not overly reactive with water but the fibers do act as a trap for migrating particles.

n: a circular steel device that holds slips supporting a suspended string of drill pipe, casing, or tubing. A spider may be split or solid.

n: A round steel unit where has a cone shaped hole in the middle,which can suspend drill pipe,casing and oil tube .

a round device that holds the slips when supporting a string of drill pipe on a rig.

n: a device used with slips to prevent tubing from falling into the hole when a joint of pipe is being unscrewed and racked. tubing sub n: any type of sub used in the tubing string. See sub.

the holder for the slips on a rig. Suspends the tubing during connection make-up.