... Gum can be applied to many industrial fields, such as oil drilling, pesticide, pottery & porcelain, printing & dyeing, ... on.It is specially produced as mud additive for oil drilling. Being an environment friendly and high efficiency ... stabilize the well-bore, prevent the damage to oil formation, and improve the efficiency of drilling, work ... )> 12001640Shearing Ratio≥6.07.60 XC polymer for oil drilling