... reduce the pressure loss during drilling, stabilize the well-bore, prevent the damage to oil formation, and improve the efficiency of drilling ... , work-over and completion.Specification (Oil Driling & Exploitation Grade Xanthan Gum):ItemORENXAN XC80ORENXAN XCD80Viscosity (1% solution ... .5Min 12.5YPMin 30Min 30Dispersibility/Max 10 lumps Xanthan gum oil well drilling