دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: a group of polymers that can maintain or increase the viscosity of bentonite while flocculating other clay solids in the mud. With bentonite extenders, desired viscosity can often be maintained using only half the amount of bentonite that would otherwise be required.

n: any of several substances - usually organic compounds of high molecular weight-that, when added in low concentrations to a bentonite or to certain other clay slurries, will increase the viscosity of the system. See low-solids mud.

n: The material increasing viscosity by adding into the clay slurry.

a drilling additive to increase the viscosity of water based muds gelled with bentonite.

n: a substance formed when two or more substances polymerise at the same time to yield a product which is not a mixture of separate polymers but a complex having properties different from either polymer alone. See polymer. Examples are polyvinyl acetatemaleic anhydride copolymer (clay extender and selective and selective flocculant),acrylamide-carboxylic and copolymer (total flocculant).

n: The product manufactured by the copolyreaction of two or more element.

a mixture of two or more polymers which polymerize at the same time and with some degree to linking to yield results unlike either polymer used alone.

n: 1. a substance added to drilling mud to increase viscosity without adding clay or other thickening material. 2. an additive that assists in getting greater yield from a sack of cement. The extender acts by requiring more water than required by neat cement.

ash from the burning of coal. Used as an extender in several cements and as a plug component.

n: a volcanic rock that can be extended to many times its original volume by crushing and heating under pressure. Release of the pressure causes expansion when the water in the rock turns to steam. It is used as an extender in cement.

n: generally speaking, it refers to some different size of product that made of pearl rock. it uses as porous loss layer block agent.

n: A kind of special cement slurry that be used in ultra-deep well,in which be feeded extender firstly,then be feeded accelerating chemicals .