83 3. Acoustic logging a b c d Figure 3.3 Acoustic tools. a) monopole tool (Mount Sopris); b) dipole tool (Robertson). c) and d) PSSL (OYO) principle and view of the tool (GeoVision-EDF document). Receivers Centralizer Isolation joint Transmitter Transmitter electronics Cable head Tool head Multiplexer Amplifier Receiver 1 Receiver 2 Damper Transmitter Source control Receiver electronics
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