The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2005
Filed:
Mar. 31, 2000
Yves Gunaltun, Marly-le-Roi, FR;
Yves Gunaltun, Marly-le-Roi, FR;
Total, Puteaux, FR;
Abstract
A method for inhibiting corrosion () in the arch of a pipe () carrying a multiphase corrosive liquid containing a liquid phase () which flows off at the lower part of the pipe () and a gaseous phase () which flows off at the upper part of the pipe. The method includes the following: a scraper () is introduced into the pipe, a joint () is provided between the scraper () and the inner wall of the pipe in such a way that the scraper is moved along the pipe from top to bottom as a result of the effect of the pressure difference between the top and bottom, a liquid that inhibits corrosion is introduced into the scraper or the liquid is injected into the pipe where it is mixed with the liquid phase (), the scraper is provided with an uptake and projection device () that enable the corrosion-inhibiting liquid contained in the scraper or the mixture contained in the pipe to be taken up, whereby the liquid is projected onto the inner wall of the arch of the pipe as the scraper advances in the pipe.