| 摘要 |
This patent consists of: First: arrangements for obtaining the cartesian coordinates of the speed of flow along the plane surface, coordinates along this plane. Second: arrangements for producing a combined sensor for an electromagnetic log system and a Döppler-Fizeau system log, both operating among the same axis. Third: a system combining the electromagnetic sensor which is the subject of the main invention with four piezoelectric transducer elements for a longitudinal and transverse log operating according to the Döppler-Fizeau principle. Fourth: arrangements for producing a combined longitudinal electromagnetic log along with double sounding transducers for an ultrasonic log with correlation along two axes. n
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