Dispersion curves obtained from well logs provide crucial formation information around the
borehole. An essential step in the inversion of such curves is to eliminate aliased modes …

To extract the compressional (P) wave signals from the collar modes in logging while drilling
(LWD) data, it is significant to investigate the propagation of those two arrivals separately …

Downhole acoustic telemetry (DAT), using a long drill string with periodical structures as the
channel, is a prospective technology for improving the transmission rate of logging while …

When a seismic wave propagates in a fluid-saturated porous medium, a relative movement
forms between the solid and the fluid and induces an electric current due to the electronic …

Acoustic logging is an effective solution to obtain the radial formation velocity profile near a
borehole, and it is critical for borehole stability evaluation and production performance …

Collar waves generated by the presence of the massive steel collar can interfere with or
even cover formation signals, which has been a challenge for designing acoustic logging …

In this paper, the acoustic logging while drilling (LWD) measurements are conducted with a
scaled LWD detector in the laboratory, in order to analyze the properties of monopole collar …

Acoustic single-well imaging (SWI) of logging-while-drilling (LWD) is an advanced logging
method in reservoir exploration, which uses reflected waves to detect the around-borehole …

In the design of acoustic logging while drilling (LWD) instruments, acoustic isolation is
crucial to prevent the loss of formation signals due to collar waves. A conventional approach …

Dispersion analysis of waves can reveal important mechanical properties of the formation
around the borehole. The traditional dispersion analysis methods are affected by wave …