In the oil industry, it is important to measure gas/oil/water flows produced from oil wells.To determine oil production, it is necessary to measure the water-in-liquid ratio (WLR), liquid fraction and some other parameters, which are related to multiphase flow rates.A research team from the University of Manchester and Schlumberger Gould Research have developed an experimental apparatus for gas/oil/water flow measurement based on a flow-conditioning device and electrical capacitance tomography (ECT) and microwave sensors.This paper presents the ECT part of the developed apparatus, including the re-engineering of an ECT sensor and a model-based image reconstruction algorithm, which is used to derive the WLR and the thickness of the liquid layer in oil-continuous annular flows formed by the flow-conditioning device.The ECT sensor was tested both at Schlumberger and on TUV-NEL's Multiphase Flow Facility.The experimental results are promising.
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Li et al. (2013) studied this question.
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