| 摘要 |
<p>The invention is concerned with a tool and method for imaging a formation through a substantially non-conductive medium. The tool comprises first circuitry (96) for injecting a current into the formation, wherein a complex impedance (90, 92) to the current is measured. Second circuitry for determining a phase angle of an impedance of the non- conductive medium and third circuitry for determining a component of the complex impedance that is orthogonal to the phase angle.</p> |
