Keywords Coal Tar Resin Modified Sulfo Copolymer;Filtrate Loss Reducer;Sea Water Drilling Fluids;Research and Development of Chemical Agent;Chengdao Offshore Oil Field in Bohai Bay;

• 煤焦油树脂改性磺基共聚物;降滤失剂;海水钻井液;产品研究与开发;渤海湾埕岛油田;