DIPOLE/MONOPOLE ACOUSTIC TRANSMITTER, METHODS FOR MAKING AND USING SAME IN DOWN HOLE TOOLS

摘要

A sonic or acoustic tool is disclosed which includes a transmitter with reduced transmitter spawned noise. The transmitters are either monopole or dipole depending on the orientation of ports in a chamber divided by a piston driven by an actuator. The transmitter size is limited only by the diameter of the tools itself because the transmitters are oriented within the tool parallel to the axis of the tool.