Method of determining drill string velocity
The invention is a method of determining the acoustic velocity of a drill string (28) in a borehole (10). An acoustic signal is generated at a first location(34) along the drill string, and detected at a second location (7). The detected signal is autocorrelated and the time of occurrence of multipa...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention is a method of determining the acoustic velocity of a drill string (28) in a borehole (10). An acoustic signal is generated at a first location(34) along the drill string, and detected at a second location (7). The detected signal is autocorrelated and the time of occurrence of multipath reflections on the autocorrelation record is utilized to determine acoustic velocity. |
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