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:
Aug. 03, 2004
Filed:
Oct. 11, 2002
Benjamin Herzhaft, Suresnes, FR;
Lionel Rousseau, Issou, FR;
Bernard Duperray, Ars, FR;
Laurent Perier, Lyons, FR;
Institut Francais du Petrole, Malmaison Cedex, FR;
Abstract
The present invention relates to a method and to a system for monitoring the evolution of the characteristics of a fluid circulating in a well ( ) for example, wherein complex dynamic viscosity measurements are performed with a suitable detector ( ) arranged on a line ( ) through which said fluid circulates, so as to obtain a law of variation of the complex dynamic viscosity &eegr;* as a function of 2&pgr;f; a rheogram of the fluid, i.e. a law of variation of the viscosity &eegr; as a function of the shear ({dot over (&ggr;)}), is deduced therefrom; Va, Vp and YV are calculated from the rheogram; these stages are repeated after a predetermined time interval; the evolution of the characteristics of the fluid is deduced from these measurements.