发明公开
- 专利标题： POWDER COMPRISING HYDROLYZABLE RESIN PARTICLES
- 专利标题（中）： 包含水解树脂颗粒的粉末
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申请号： EP15839330.6申请日： 2015-08-11
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公开(公告)号： EP3196230A1公开(公告)日： 2017-07-26
- 发明人: YOSHIKAWA, Seishi , YAMADA, Toshiki , KATAYAMA, Tsutaki
- 申请人： Toyo Seikan Group Holdings, Ltd.
- 申请人地址： 18-1 Higashi-Gotanda 2-chome Shinagawa-ku Tokyo 141-8627 JP
- 专利权人： Toyo Seikan Group Holdings, Ltd.
- 当前专利权人： Toyo Seikan Group Holdings, Ltd.
- 当前专利权人地址： 18-1 Higashi-Gotanda 2-chome Shinagawa-ku Tokyo 141-8627 JP
- 代理机构： J A Kemp
- 优先权： JP2014183305 20140909
- 国际公布： WO2016039061 20160317
- 主分类号： C08J3/12
- IPC分类号： C08J3/12 ; C08L101/16 ; E21B43/16
摘要：
A powder comprising hydrolyzable resin particle, containing particles which do not pass through a sieve having an opening size of 500 µm in an amount of 50 mass% or more and having a repose angle of 51° or more. This powder is preferably used as an additive for drilling to enhance the drilling properties of a drilling fluid and improve the retentivity of a fracture extending from a winze.
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