دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a low to moderate strength centralizer formed by arched spring-like straps of metal.

n: The additional tool for cementing. There are many kinds of casing centralizer. Usually using relief centralizer

one of several centralizer designs intended to keep the casing better centered in the borehole to get better cement jobs.

n: A tool used to keep a tool string in the center of the tubing, casing, or wellbore. Tool centralization may be required for several reasons: to prevent the tool from hanging up on obstructions on the wellbore wall, to place fluid efficiently, and to avoid

a bladed or bow spring tool that helps center tools or pipe in the wellbore.

n: The centralizer that can connect with any round surface tool. Consisted by blade centralizer, collar clamp and arrester.

n: a kind of centering device with two centering devices ,usually possessing high capability in setting upright and clearing the borehole wall

n: a kind of casing accessories with the centralizer blade being checker and tilting in the same direction

n: a kind of downhole tool composed by axle joint,saver sub and centering device with ledges on both ends,used to steady the bit during drilling and easy to replace the centralizer after the wing panels of centralizer being abraded

n: the insequent rotary casing centraliser installed between the centralizing fins and casing

corrosion between two dissimilar metals - couplings, centralizers, pumps, packers, profiles – usually severe metal loss on one metal near contact point. May see galvanic loss on a single metal with current.

a downhole tool centralizer that is engaged by raising hydraulic pressure.