To meet the requirements of offshore well drilling,this study developed a new type of positive-charged polyglycol/formate mud system by combining the advantages of the two additives.

• 为适应海上钻井需要而研制的新型正电聚醇-甲酸盐钻井液体系,兼具正电聚醇和甲酸盐钻井液的优点。在地层孔隙压力较低时,主要使用正电聚醇处理剂确保钻井液具有良好的性能;