Agent for controlling fluid loss in fluids used in operations in the oil and gas industry and similar fluids, cement paste, and method for cementing a well

摘要

Agent for controlling fluid loss in fluids used in operations in the oil and gas industry and similar fluids, cement paste, and method for cementing a well. It is proposed a new fluid loss control agent useful for cementing oil wells or Gas.The fluid loss control agent consists of a mixture of styrene butadiene latex polymer and a water soluble high molecular weight such as a copolymer amps - am. The addition of polymer soluble in water can dramatically reduce the amount of latex required for obtaining | a performance control of fluid loss and even control the migration of gas.