Patent ID: 8730763

Claim:
A method of optimizing values of a plurality of parameters in a downhole environment having at least one borehole and a plurality of borehole acoustic modes which are acoustic waves in or along the borehole, comprising: transmitting a signal from a transmitter into a formation; receiving the signal at a receiver spaced from the transmitter; determining a first slowness of a first borehole acoustic mode at a plurality of frequencies of the received signal, the first slowness associated with a first parameter and a second parameter; determining a second slowness of a second borehole acoustic mode at the plurality of frequencies of the received signal, the second slowness associated with the first parameter and the second parameter; and inverting the first slowness and the second slowness to determine an optimized value of the first parameter and an optimized value of the second parameter, wherein the first and second borehole acoustic modes have substantially different respective sensitivities to each of the first and second parameters.