Invention Grant
- Patent Title: Polyamide emulsifier based on polyamines and fatty acid/carboxylic acid for oil based drilling fluid applications
- Patent Title (中): 基于多胺和脂肪酸/羧酸的聚酰胺乳化剂用于油基钻井液应用
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Application No.: US12992463Application Date: 2009-05-12
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Publication No.: US08765644B2Publication Date: 2014-07-01
- Inventor: Hua Yu , Dale Stanley Steichen , Alan Duncan James , Jon B. Staley , Thomas William Himmel
- Applicant: Hua Yu , Dale Stanley Steichen , Alan Duncan James , Jon B. Staley , Thomas William Himmel
- Applicant Address: NL Arnhem
- Assignee: Akzo Nobel N.V.
- Current Assignee: Akzo Nobel N.V.
- Current Assignee Address: NL Arnhem
- Agency: Norris McLaughlin & Marcus PA
- Priority: EP08159130 20080626
- International Application: PCT/EP2009/055684 WO 20090512
- International Announcement: WO2009/138383 WO 20091119
- Main IPC: C09K8/34
- IPC: C09K8/34 ; C07C231/02 ; C07C231/10
Abstract:
The present invention generally relates to emulsifiers for oil-based drilling fluids and muds comprising an emulsifier based on the polyamides derived from fatty acid/carboxylic acid and optionally alkoxylated polyamines. The invention also relates to oil or synthetic based drilling fluids comprising the emulsifiers of the invention and to drilling methods utilizing same.
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