发明申请
US20090264326A1 Lubricating coating composition suitable for tubular threaded joints
审中-公开
适用于管状螺纹接头的润滑涂料组合物
- 专利标题： Lubricating coating composition suitable for tubular threaded joints
- 专利标题（中）： 适用于管状螺纹接头的润滑涂料组合物
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申请号： US12385531申请日： 2009-04-10
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公开(公告)号： US20090264326A1公开(公告)日： 2009-10-22
- 发明人: Ryuichi Imai , Kunio Goto
- 申请人： Ryuichi Imai , Kunio Goto
- 优先权： JP2006-280478 20061013
- 主分类号： C10M135/10
- IPC分类号： C10M135/10 ; C10M129/48 ; C10M129/26
摘要：
A tubular threaded joint for connecting tubing or casing used to excavate oil wells have a lubricating coating formed from a lubricating coating composition comprising one or more basic lubricants selected from a basic sulfonate salt, a basic salicylate salt, a basic phenate salt, and a basic carboxylate salt and having biodegradability value (BOD) of at least 20% when measured after 28 days in seawater. The joint can be used without application of a compound grease containing heavy metals even in a country or region having severe environmental regulations.
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