Keywords poly glycol/potassium-treated sulfonated polymer mud;high density drilling fluids;inhibition;lubricity;wellbore stabilization;East Chuanyu gas field;deep horizontal well;

• 聚合醇-钾聚磺钻井液;高密度钻井液;抑制性;润滑性;井眼稳定;川渝东部气田;水平深井;