| 摘要 |
<p>Conduit system 2 comprises first and second concentric tubulars 6 and 4 and a plurality of longitudinal spacers 8. At least one of the spacers is hollow and carries means for sensing collecting and/or transmitting data for monitoring various properties in a well. In an alternative arrangement, a cylinder 6' made from one or more helically wound wires can be used to carry the measurement equipment, one or more of the wires being hollow. In Figure 3, such a cylinder surrounds inner tubular 4, which may be alternatively be a further cylinder 6'. Spacers 8 may be used here also as in Figure 1.</p> |
