专利检索 ap:("China University of Petroleum (East China)") AND inv:"Gongrang Li" 第 1 页

1.

发明授权
Temporary plugging agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof 有权

公开(公告)号：US10647902B1

公开(公告)日：2020-05-12

申请号：US16394753

申请日：2019-04-25

申请人： China University of Petroleum (East China)

发明人： Weian Huang , Jingwen Wang , Ming Lei , Jiaqi Zhang , Gongrang Li , Kaihe Lv , Xiongjun Wu , Zhengsong Qiu

IPC分类号： C09K8/08 , C09K8/42 , C09K8/12

摘要： The present invention discloses temporary plugging agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof. The temporary plugging agent for drilling fluid is obtained by controlling gelatinized starch and a vinyl grafted monomer to have a polymerization reaction in an activator solution in the presence of a cross-linking agent and an initiator; the vinyl grafted monomer comprises acrylic acid, acrylamide, and 2-acrylamide-2-methyl propanesulfonic acid; the gelatinized starch is obtained by adding starch into deionized water to have a gelatinization reaction.