Abstract
AbstractUsing the finite element method, we study the acoustic field in formation generated by a linear phased array transmitter in a fluid‐filled borehole, as well as the method to intensify the acoustic energy radiated from the source in the borehole to the formation. The direction of the radiated energy to the formation generated by the source in the borehole can be steered by means of adjusting the parameters of the linear phased array transmitter, which can result in obviously intensified radiated energy of the compressional wave in a certain direction in the formation. Therefore, the depth and resolution of investigation and signal‐to‐noise ratio of the received signal can be improved by employing linear phased array transmitters in areas of crosswell seismic survey and recently developed borehole acoustic reflection imaging.
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