PROCESS FOR PREPARATION OF HETEROPOLYSACCHARIDE USING STRAIN¹NC1B 11883 AND PER SE

摘要

Process for preparing a heteropolysaccharide from strain NCIB 11883 and use of the latter e.g. as viscosity modifier in an aqueous system such as completion fluids, work over fluids, stimulation fluids, and preferably in drilling fluids and use in connection with well-treatments, and enhanced oil recovery.