Fluid loss control agents

R. Audebert, J. Janca, P. Maroy, and H. Hendriks. Chemically cross-linked polyvinyl alcohol (PVA), process for synthesizing same and its applications as a fluid loss control agent in oil fluids. Patent GB 2278359,1994. 

Uses Emulsifier, thickener, binder, stabilizer in foods fluid loss control agent in drilling muds, completion and workover fluids... 

Additional large-volume uses of lignosulfonates include animal feed pellet binders, dispersants for gypsum board manufacture, thinners/fluid loss control agents for drilling muds, dispersants/grinding aids for cement manufacture, and in dust control applications, particularly road dust abatement. 

Fluid loss controlling agents filtrate or fluid loss reducers serve to decrease fluid loss. The drilling mud fluid loss property is a measure of the liquid phase tendency to pass through the filter cake. Examples of this type include names such as polyacrylates, starch, and carboxymethyl starch. 

Uses Sec. emulsifier, oil welling agent, fluid loss control agent for Invert drilling fluids... 

Uses Primary emuisifier, fluid loss control agent for invert muds Features Must be used with lime... 

Uses Primary emulsifier for invert drilling fluids fluid loss control agent, stabilizer, rheology control agent for invert muds (in conjunction with sec. emulsifiers) Features Most effective when neutralized with lime Properties Dk, vise, liq, sol, in oil insol. in water sp.gr. 0.93 vise. < 10 cps (20 C) ... 

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