Fig. 7

Monopole wave patterns in the borehole: (a) P-, S-, and Stoneley waves emitted by the transmitter; (b) results from the sidewall transmitter, identified by red lines, differentiate those from the typical monopole indicated by gray lines.

Monopole wave patterns in the borehole: (a) P-, S-, and Stoneley waves emitted by the transmitter; (b) results from the sidewall transmitter, identified by red lines, differentiate those from the typical monopole indicated by gray lines.