| 摘要 |
<p>1. An electromagnetic logging apparatus for measuring the conductivity and/or the dielectric constant of geological formations transversed by a borehole comprising a magnetic dipole (206, 224) for transmitting electromagnetic energy and at least one magnetic dipole (206, 226) for receiving electromagnetic energy mounted on an elongate tubular support (202, 222) in an axially spaced relationship from each other, characterized in that said tubular support (202, 222) is made of conductive metal and constitutes, between said magnetic dipoles (206, 224, 226), the external housing of the apparatus.</p> |
