发明申请
- 专利标题： PARTICULATE PLUGGING AGENT BASED ON HYDROPHOBICALLY-MODIFIED VINYL ALCOHOL POLYMERS
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申请号： US17183407申请日： 2021-02-24
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公开(公告)号： US20210269699A1公开(公告)日： 2021-09-02
- 发明人: Ghebrehiwet GHEBREMESKEL , Keisuke MORIKAWA , Takuma KANESHIMA
- 申请人： KURARAY CO., LTD.
- 申请人地址： JP Kurashiki-shi
- 专利权人： KURARAY CO., LTD.
- 当前专利权人： KURARAY CO., LTD.
- 当前专利权人地址： JP Kurashiki-shi
- 主分类号： C09K8/508
- IPC分类号： C09K8/508 ; C08F216/06 ; C08F210/02 ; C09K8/504 ; E21B33/13
摘要：
A particulate compacted copolymer polyvinyl alcohol-based composition that can be used as a plugging agent for minimizing or eliminating loss of circulation of fluids during the process of well drilling, workover, completion and cementing in the production of oil and gas.
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