Measuring apparatus

Abstract

A method for measuring solid content present in a solid-fluid flow through a tube 20, comprises; using a generator 50 to generate an excitation signal for exciting a coil arrangement 30A, B, C disposed around the tube into resonance for interacting with the solid-fluid flow through the tube; receiving at a signal processor 80 resonance signals from the coil arrangement for determining solid content within the tube, to provide real time measurement of solid content in the tube, wherein the signal processor is located remote from the tube. A temperature sensor and conductivity sensor 100 are also included. The tube may be an offshore drill pipe and the processor is located onshore. Treatment of the fluid flow may be adjusted in response to the measurements. The solid content may be hydrate formation or drill cuttings. A method of measuring water volume fraction in the solid-fluid multiphase flow is also disclosed.

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