METHOD OF CLEANING A WELL BORE PRIOR TO CEMENTING

摘要

Aqueous and non-aqueous systems for cleaning a section of a subterranean well borehole and casing prior to cementing are provided. A series of spacer fluids are introduced into the borehole to displace drilling fluid and to provide clean and water wet casing and borehole surfaces of the cleaned section of borehole. These clean and water wet surfaces will provide superior bonding between cement and the surfaces.