| 摘要 |
A wire coiled tubing, and measurement while drilling resistivity tool having three or more receivers (730, 740, 750, 760) is disclosed. This results in a tool capable of gathering substantial resistivity data about a subterranean formation (20, 21) while being drawn quickly past a borehole (18) wall. One embodiment of this resistivity tool includes four receivers (720, 740, 750, 760) and a pair of transmitters (710, 720) resulting in six resistivity measurements from each firing of a transmitter. The transmitters are arranged to obtain a regularly spaced series of resistivity measurements. The transmitter may be fired at two or more frequencies to result in further information about the formation. Another embodiment of this resistivity tool places its transmitters and receivers to obtain a number of redundant resistivity readings, resulting in error checking and increased reliability. For enhanced performance, transceivers (820) may also be used. An analogous method is also disclosed.
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