IMPEDANCE BASED FLOW RECONSTRUCTION - A NOVEL FLOW COMPOSITION MEASURING TECHNIQUE FOR MULTI-PHASE-FLOWS

In this paper, experimental data obtained with a new impedance based m easuring technique for multi-phase flows are presented. By impedance m easurement between different electrode combinations of a completely no n-intrusive, multi-electrode impedance probe, a vector is obtained, wh ich is subsequently compared to a set of stored data, shaped as a refe rence matrix. This allows for the on-line reconstruction of the local volumetric flow composition and the occurring flow regime. The method covers component concentrations in the range of 0-100% over multiple f low regimes and a wide field of flow components. In addition to a brie f description of the reconstruction principle, different ways of gener ating the reference matrix are discussed and measured data for oil, wa ter and gas flows are presented. Component concentration can be determ ined at an overall accuracy better than 2%.