Application of multimodality tomography for multi phase flow measurements

Jacek Nowakowski, Erling Hammer, Dominik Sankowski, Darius Styra, Radosław Wajman, Robert Banasiak, Andrzej Romanowski

Technical University of Lodz, Computer Engineering Department, Stefanowskiego 18/22, 90­924 Lodz Poland, jacnow@kis.p.lodz.pl

University of Bergen, Department of Physics and Technology, Alegaten 55, 5007 Bergen, Norway

ABSTRACT

The multi phase flow measurements are very important tasks in many areas of industrial processes applications. One of them is undersea exploration of oil in the petroleum industry. The submitted paper presents application of multi modality: capacitance, impedance and gamma ray tomography for performing measurements of a flow composed of sea water, oil and gas flow. The paper presents theoretical principles applied to design multimodality tomograph and results of experiments performed in University of Bergen. The experiments were done using ECRT tomograph designed and built in Technical University of Lodz and combined measurements of signals acquired from all measuring modalities. Measurement confirmed that multi modality approach allows giving fast and reliable on­line results of measurements of composition of multi phase flow. Applied algorithm allowed to speed up on­line measurements and presented results in a form required in industrial applications. The derived conclusions can be used as guidelines for preparation of industrial applicable construction of tomograph.

Keywords Multi phase flow, Multimodality tomography, ECT, ERT, GRT.