Soda Ash is the common name for sodium carbonate (Na2CO3), used to precipitate soluble calcium in drilling muds. It is a weak base that is soluble in water and dissociates into sodium and carbonate ions in solution. Calcium is present in many makeup waters and formations. It can cause flocculation of the mud, resulting in increased rheology, gel strengths, and fluid loss. Soda Ash can treat it for meeting the operating requirements.