Lignosulfonates 3
Lignosulfonates 3 : Organic drilling fluid additives derived from by-products of sulfite paper manufacturing process from coniferous woods. Some of the common salts, such as the ferrochrome, chrome, calcium, and sodium, are used as universal deflocculants while others are used selectively for calcium-treated systems. In large quantities, the ferro-chrome and chrome salts are sometimes used for fluid-loss control and shale inhibition. (Bul D11)
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