Acoustic transducers with dynamic frequency range

摘要

In one aspect, an apparatus for use downhole is provided, which apparatus, in one embodiment, includes an acoustic transducer having a first member in pressure communication with a confined fluid, wherein a displacement of the first member causes a volume change in the confined fluid that amplifies displacement of a second member to generate a pressure wave in medium.

主权项

1. An apparatus for use downhole, comprising:
an acoustic transducer having a first member in pressure communication with a substantially incompressible confined fluid, a second member in pressure communication with the substantially incompressible fluid, wherein a displacement of the first member causes the confined fluid to transform a larger first force and a smaller first displacement of the first member to a smaller second force and a larger second displacement of the second member to generate a pressure wave in a medium; an acoustic diaphragm in pressure communication with the second member configured to generate the pressure wave in the medium; and a pressure piston between the acoustic diaphragm and the second member.