Invention Grant
- Patent Title: Particulate plugging agent based on hydrophobically-modified vinyl alcohol polymers
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Application No.: US17183407Application Date: 2021-02-24
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Publication No.: US11384276B2Publication Date: 2022-07-12
- Inventor: Ghebrehiwet Ghebremeskel , Keisuke Morikawa , Takuma Kaneshima
- Applicant: KURARAY CO., LTD.
- Applicant Address: JP Kurashiki
- Assignee: KURARAY CO., LTD.
- Current Assignee: KURARAY CO., LTD.
- Current Assignee Address: JP Kurashiki
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Main IPC: C09K8/508
- IPC: C09K8/508 ; C08F216/06 ; C08F210/02 ; E21B33/13 ; C09K8/504
Abstract:
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.
Public/Granted literature
- US20210269699A1 PARTICULATE PLUGGING AGENT BASED ON HYDROPHOBICALLY-MODIFIED VINYL ALCOHOL POLYMERS Public/Granted day:2021-09-02
Information query
