| 摘要 |
<p>A method and apparatus for telemetering information from a borehole to the surface with drilling, wherein a tensioned wireline comprising an electric conductor is used to transit the information form a low level in the borehole to an intermediate position in the drill string, and a plurality of drill pipe sections, each comprising an insulated electrical conductor, is used to transmit the information from the intermediate position to the surface. The tensioned wireline may be removed form the surface without removing the drill string from the borehole.</p> |
