| 摘要 |
An apparatus for monitoring a location of a borehole for production of petroleum from an earth formation is provided. The apparatus includes: a detection source disposable within a detection source conduit, the detection source including an elongated electrically conductive member extendable along at least a portion of the detection source conduit; and an electrosensitive material disposed in at least one portion of the elongated member, the electrosensitive material reactive to an electric current to change a shape of the electrosensitive material, the electrosensitive material configured to change shape in response to the electric current to form an electromagnet at the portion. A system and method for monitoring a location of a borehole for production of petroleum from an earth formation are also provided.
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