85115661
Aug 25, 2010
Jan 12, 2016
Chemical additives for oil recovery well fluids, fracturing fluids, and hydrostatic test waters for use in emulsification, corrosion inhibition, fluid loss control, and suspension control in on-shore and off-shore drilling in the oil field industry; Chemical additives for use in secondary oil recovery systems for use in emulsification, corrosion inhibition, fluid loss control, and suspension control in on-shore and off-shore drilling in the oil field industry, namely, chemicals used in oil drilling
Chemicals