Abstract / scope
ISO 13500:2006 covers physical properties and test procedures for materials manufactured for use in oil-and gas-well drilling fluids. The materials covered are barite, haematite, bentonite, nontreated bentonite, OCMA grade bentonite, attapulgite, sepiolite, technical grade low-viscosity carboxymethylcellulose (CMC-LVT), technical grade high-viscosity carboxymethylcellulose (CMC-HVT), and starch. ISO 13500:2006 is intended for the use of manufacturers of named products.