Riteks SC-500 deposit control agent has been developed as a Calcium Carbonate and Barium Sulphate scale inhibitor for use in high temperature oilfield applications. Specially formulated polymer chemistry is utilized to achieve “best in class” performance in the presence of high contaminant loading and TDS conditions. Stability in temperatures up to 400ºF and pH in excess of 9.0 (such as H2S Scavenger applications) is also provided.