| 摘要 |
<p>The invention relates to a logging tool (1) for determining properties of a fluid (2) surrounding the tool arranged downhole in a casing (3) comprising a wall (4) and having a longitudinal extension. The logging tool has a substantially longitudinal cylindrical shape with a longitudinal axis and, when seen in cross-section, a periphery (5). Moreover, the logging tool comprises a plurality of electrodes (6) arranged spaced apart around the longitudinal axis in the periphery of the tool so that the fluid flows between the electrodes and the casing wall, and a measuring means for measuring the capacitance between two electrodes in all possible combinations giving n*(n-1)/2 capacitance measurements for n electrodes.</p> |
