| 摘要 |
<p>A system for conducting measurements and/or interventions in a well includes a plurality of magnetic components for disposition along the well such that their magnetic axes are substantially aligned with the longitudinal direction of the well (fig 4). The system further comprises a conveyor 7 suitable for location within the well and includes at least one magnetic component having its magnetic axis aligned with a travel axis of the conveyor 7, and a position controller for alternating the polarity of either the magnetic components for disposition along the well or the magnetic component(s) of the conveyor 7, such that, in situ, the conveyor 7 is caused to move up or down the well by a required extent. The conveyor 7 may include sensors for collecting data and the data may be transferred between the conveyor 7 and a data transfer unit located in the well.</p> |
