发明授权
- 专利标题： Self-breakable yield point enhancer for oil based drilling mud
- 专利标题（中）： 用于油基钻井泥浆的自断裂屈服点增强剂
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申请号： US11572337申请日： 2004-07-20
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公开(公告)号： US07956014B2公开(公告)日： 2011-06-07
- 发明人: Luigi Merli , Guido De Stefano , Giuseppe Li Bassi
- 申请人： Luigi Merli , Guido De Stefano , Giuseppe Li Bassi
- 申请人地址： IT Albizzate
- 专利权人： Lamberti SpA
- 当前专利权人： Lamberti SpA
- 当前专利权人地址： IT Albizzate
- 代理机构： Mossman, Kumar & Tyler, PC
- 国际申请： PCT/IT2004/000396 WO 20040720
- 国际公布： WO2006/008765 WO 20060126
- 主分类号： C09K8/38
- IPC分类号： C09K8/38
摘要：
The present invention relates to a liquid, self-breakable, temporary viscosifier agent (yield point enhancer) for oil based drilling muds, obtained by reacting one or more dicarboxylic fatty acids with a secondary dialkanolamine and thereafter with a tertiary tialkanolamine, and to oil based drilling muds containing it.
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