授权号：US11034876B1

授权日期：2021-06-15 00:00:00

申请号：US11034876B1

发明作者：贺垠博,蒋官澄,董腾飞,杨丽丽,李武泉,刘海洋,李小庆,罗绪武,赵利,黄贤斌,刘敬平,邓金根

专利状态：专利授权

专利类型：发明专利

专利名称：Calcium-resistant zwitterionic polymer,prepation method and application thereof,and water-based drilling fluid containing polymer as dispersant