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:
Jul. 12, 2005
Filed:
Mar. 02, 2001
Mark Christopher Haase, Rijswijk, NL;
Alexander Michael Van Der Spek, Rijswijk, NL;
Mark Christopher Haase, Rijswijk, NL;
Alexander Michael Van Der Spek, Rijswijk, NL;
Shell Oil Company, Houston, TX (US);
Abstract
A method for determining a flow property of a fluid flowing through a conduit provided with a capacitance meter having an upstream and a downstream annular capacitance sensor, wherein each annular capacitance sensor having at least three sensor electrodes, which sensor electrodes are arranged around the circumference of the conduit, the method having selecting, for each annular capacitance sensor a set of measurement capacitors, wherein a measurement capacitor is formed by two measurement electrodes, and wherein a measurement electrode consists either of a single sensor electrode or of at least two interconnected sensor electrodes; measuring at several moments during a time interval a capacitance of each measurement capacitor of each annular capacitance sensor; determining cross correlations between capacitances measured during the time interval at the upstream annular capacitance sensor and capacitances measured during the time interval at the downstream annular capacitance sensor; and determining the flow property from the cross correlations.