Oil absorbent oilfield materials as additives in oil-based drilling fluid applications

摘要

A method using a single additive to modify or enhance one or more properties of a drilling fluid for drilling a wellbore in a subterranean formation, prevent lost circulation during the drilling, and/or increase bonding strength during cementing of the wellbore. The additive comprises an oil absorbent material comprising homopolymers or copolymers comprising styrene butadiene, acrylate, phthalate, and carbonate salts.