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Sonic Well Logging

Application ID: 16691

This model demonstrates how to simulate a piezoelectric transducer as both a sound transmitter and a receiver in a well logging setup. Other applications of this setup are, for example, in the field of nondestructive testing. A transmitting transducer is connected to an electrical circuit which is set up to send out a pulse as a detecting signal and also pick up the signals that come back to the transducer. Two other piezoelectric transducers are used solely as receivers. The results show how the different acoustic modes can be separated and detected by the transducers given long enough propagation distances. This is due to the different propagation speed associated with different acoustic mode.

The model uses the Acoustic-Piezoelectric Interaction, Transient physics interface of the Acoustics Module and the Circuit physics interface of the AC/DC, MEMS, or Plasma Module.

This model is included as an example in the following products:

Acoustics Module

The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.