Synthetic Polymer in Liquid Form is environmentally compatible, multipurpose mud conditioner for rheology control in water based mud. The Synthetic Polymer is formulated from the liquid polymeric deflocculant for fresh and salt water muds, especially at elevated temperatures of 45 ° F and above. The Synthetic Polymer retains a light colour and has water clear filtrate. The Synthetic Polymer in Liquid Form is effective in concentration of 0.2 to 2.5 ppb depending upon the degree of deflocculation, high temperature stability and fluid loss control required.