| abstract |
The invention relates to a method for producing a dry film with a high abrasion resistance on a threaded element for drilling and / or operating a hydrocarbon well, characterized in that it includes at least the following steps: obtaining a stable dispersion containing polyamide imide powder, polar aprotic solvent boiling point of more than 180 ° C at 760 mm Hg. Art. and water; applying a dispersion on one of the ends (1, 2) of the specified threaded element at a temperature in the range from 20 to 40 ° C; Coated end drying. |