Invention Grant
- Patent Title: Self-breakable yield point enhancer for oil based drilling mud
- Patent Title (中): 用于油基钻井泥浆的自断裂屈服点增强剂
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Application No.: US11572337Application Date: 2004-07-20
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Publication No.: US07956014B2Publication Date: 2011-06-07
- Inventor: Luigi Merli , Guido De Stefano , Giuseppe Li Bassi
- Applicant: Luigi Merli , Guido De Stefano , Giuseppe Li Bassi
- Applicant Address: IT Albizzate
- Assignee: Lamberti SpA
- Current Assignee: Lamberti SpA
- Current Assignee Address: IT Albizzate
- Agency: Mossman, Kumar & Tyler, PC
- International Application: PCT/IT2004/000396 WO 20040720
- International Announcement: WO2006/008765 WO 20060126
- Main IPC: C09K8/38
- IPC: C09K8/38
Abstract:
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.
Public/Granted literature
- US20080318810A1 Self-Breakable Yield Point Enhancer for Oil Based Drilling Mud Public/Granted day:2008-12-25
Information query
