Chemicals and chemical compositions for use in industry; chemicals and chemical compositions for use in the well drilling industry; chemicals and chemical compositions for use in the oil-well drilling industry; chemicals and chemical compositions for use in the oil-well drilling industry, namely, oil-well servicing fluids, drilling fluids, oil-well cement slurries, completion and workover fluids, fracturing fluids, polymers and fluidized polymer suspensions for use in oil-well servicing fluid...