Invention Grant
- Patent Title: Lubricating coating composition suitable for lubrication of a threaded joint
- Patent Title (中): 适用于润滑螺纹接头的润滑涂料组合物
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Application No.: US10201932Application Date: 2002-07-25
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Publication No.: US06869111B2Publication Date: 2005-03-22
- Inventor: Kunio Goto , Shigeo Nagasaku , Hideo Yamamoto
- Applicant: Kunio Goto , Shigeo Nagasaku , Hideo Yamamoto
- Applicant Address: JP Osaka FR Aulnoye-Aymeries
- Assignee: Sumitomo Metal Industries, Ltd.,Vallourec Mannesmann Oil & Gas France
- Current Assignee: Sumitomo Metal Industries, Ltd.,Vallourec Mannesmann Oil & Gas France
- Current Assignee Address: JP Osaka FR Aulnoye-Aymeries
- Agency: Burns, Doane, Swecker & Mathis, L.L.P.
- Priority: JP2000-368895 20001204
- Main IPC: C10M109/02
- IPC: C10M109/02 ; C10M111/04 ; C10M121/02 ; C10M129/16 ; C10M135/06 ; C10M135/20 ; C10M137/02 ; C10M137/04 ; C10M137/10 ; C10M143/02 ; C10M143/04 ; C10M143/16 ; C10M145/14 ; C10M149/18 ; C10M159/20 ; C10M159/22 ; C10M159/24 ; C10M165/00 ; C10M167/00 ; C10M169/04 ; C10N10/04 ; C10N10/12 ; C10N20/00 ; C10N20/06 ; C10N30/06 ; C10N30/12 ; C10N40/00 ; C10N40/34 ; C10N50/02 ; E21B17/042 ; F16L15/04 ; F16L35/00
Abstract:
A lubricating coating composition in which at least one basic lubricant selected from a basic sulfonate, a basic salicylate, and a basic phenate is dissolved in a volatile solvent is applied to the frictional surface of a box and a pin constituting a threaded joint for oil well pipes. The composition may further contain one or more of a thermoplastic resin powder, another lubricant, and an extreme pressure agent. The surface roughness of the frictional surfaces preferably has an Rmax in the range of 5-40 micrometers.
Public/Granted literature
- US20030111838A1 Lubricating coating composition suitable for lubrication of a threaded joint Public/Granted day:2003-06-19
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