Additivation of essentially amorphous cellulose nanofibrils with carboxyl cellulose with a high degree of substitution

摘要

A drilling fluid comprising cellulose nanofibrils consists of 80% cells with primary walls loaded with carboxylic acids, polysaccharide acids or their mixtures, and contains a dispersing or fluidifying agent at a content of 0-1% with respect to the total weight of the fluid.