发明授权
US06339048B1 Oil and oil invert emulsion drilling fluids with improved anti-settling properties
有权
油和油反相乳液钻井液具有改进的抗沉降性能
- 专利标题： Oil and oil invert emulsion drilling fluids with improved anti-settling properties
- 专利标题（中）： 油和油反相乳液钻井液具有改进的抗沉降性能
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申请号： US09470973申请日： 1999-12-23
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公开(公告)号： US06339048B1公开(公告)日： 2002-01-15
- 发明人: Mahalingam Santhanam , Keith McNally
- 申请人： Mahalingam Santhanam , Keith McNally
- 主分类号： C09K706
- IPC分类号： C09K706
摘要：
This invention is of a drilling fluid composition containing a liquid thixotrope, which thixotrope is free of solvents or any other diluent, and is in easily usable, liquid form, pourable at ambient temperatures, and which provides effective and efficient rheological properties when used at low levels in such compositions. In a specific aspect, the invention provides an oil or oil invert emulsion drilling fluid composition containing one or more organoclays, and in addition contains a additive which comprises the reaction product of an alkoxylated nitrogen containing compound or a diamine, and one or more polycarboxylic acids in a specified equivalent ratio.