发明名称 |
PROCESS FOR PRODUCING A DRY POLYAMIDE-IMIDE FILM WITH HIGH GALLING RESISTANCE ON A THREADED TUBULAR COMPONENT FROM AN AQUEOUS DISPERSION WHICH IS FREE OF CARCINOGENIC SUBSTANCES |
摘要 |
The invention concerns a process for producing a dry film with a high galling resistance on a threaded element for drilling and/or operating a hydrocarbon well, characterized in that it comprises at least the following steps: ⋅ forming a stable dispersion comprising a polyamide-imide powder, a polar aprotic solvent with a boiling point of more than 180°C at 760 mm Hg, and water; ⋅ applying the dispersion to one of the ends (1, 2) of said threaded element at a temperature in the range 20°C to 40°C; ⋅ drying the coated end. |
申请公布号 |
WO2014041017(A1) |
申请公布日期 |
2014.03.20 |
申请号 |
WO2013EP68799 |
申请日期 |
2013.09.11 |
申请人 |
VALLOUREC OIL AND GAS FRANCE;NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
GOUIDER, MOHAMED;GARD, ERIC;PINEL, ELIETTE;PETIT, MIKAEL |
分类号 |
C10M177/00;C10M107/44 |
主分类号 |
C10M177/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|