Patent ID: 6268727
Filing Date: 2001-07-31
Classification: E21B,G01F,G01N,G01R,G01V,Y02A

Abstract:
A flowmeter for a fluid flow having at least one petroleum liquid constituent, comprising:a pre-polarizer for magnetically polarizing said fluid thereby providing a polarized fluid flow;a NMR sensor for providing NMR output data from said polarized fluid flow;an NMR detector for powering said NMR sensor at the NMR frequency and for amplifying and detecting an NMR signal induced in said sensor from said polarized fluid flow;an ESR sensor for providing ESR output data from said polarized fluid flow;an ESR detector for powering said ESR sensor at the ESR frequency and for amplifying and detecting an ESR signal induced in said sensor from said polarized liquid flow; anda processor programmed to calculate the total fluid density from said NMR output data, and to calculate the petroleum liquid fraction from said ESR output.