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Title: Measurement Of The Main Slug Flow Parameters In A Combined Up Stream-Down Stream Two-Phase Flow
Author: F. Snchez Silva, m. Perez Garcia, I. Carvajal Mariscal, D. Libreros, J. G. Barbosa Saldaa
Source: 2009 International Symposium on Fluid Flow Measurement
Year Published: 2009
Abstract: Slug flow induced by the combination of a downstream and an upstream two phase flow is very common in the oil industry. This phenomenon can be dangerous for the equipment operation because it induces vibrations due to the intermittent movement of the slugs into the separators, for this reason, we have conducted an experimental research in order to measure the main parameters and understand the phenomenon which occurs in two-phase flow conduction on hilly terrains which is common in oil and geothermal industries. For the measurements we have built a loop where it is possible to change the flow conditions and the loop parameters as the length and inclination angle of the pipe sections. Three conductive probes were used for the hold-up measurement in different points all of them were designed, constructed, tested and calibrated first statically and then dynamically. A data acquisition system based on a microcontroller of FREESCALE was also developed to get information from 12 instruments with a resolution of 10 bits in real time. The system operates automatically and we can control the experiment using a PC. We have undertaken the first experimental runs for a set of four alternated sections upstream downstream. The gas and liquid flow rates to get stratified flow, were tested in order to observe the variation of hold-up of the resulting slugs, we have also observed the mechanism of severe slugging formation. In this paper we present the preliminary conclusions of the experimental results analysis. Key words: Two-phase, slug flow, hilly terrain, experimental characterization

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