Electromagnetic wave resistivity tool with tilted antenna
This invention is directed to a method and apparatus for evaluating an earth formation. The present invention provides a resistivity logging tool (10) with a transmitter (T 1 -T n ) and a receiver (R 1 ,R 2 ) oriented at different angles relative to the longitudinal axis of the tool body (10). The l...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | This invention is directed to a method and apparatus for evaluating an earth formation. The present invention provides a resistivity logging tool (10) with a transmitter (T 1 -T n ) and a receiver (R 1 ,R 2 ) oriented at different angles relative to the longitudinal axis of the tool body (10). The logging tool (10) is rotated during drilling and a parameter of the earth formation is evaluated with reference to received electromagnetic energy at the receiver and a rotational position indicator. |
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