LOGGING SYSTEMS AND METHODS WITH TILT COMPENSATION FOR SECTOR-BASED ACOUSTIC TOOLS

摘要

Various disclosed acoustic logging systems and methods compensate for logging tool tilt relative to the borehole axis. Some method embodiments include: generating an acoustic signal that propagates along a borehole in a formation; receiving a signal from each of a set of azimuthally-arranged acoustic transducers; processing the signals to compensate for logging tool ti and determining a property of the formation based at least in part on the compensated signals. Some tool embodiments include an internal controller that processes signals from different directions to determine and correct time offsets that are attributable to logging tool tilt. Thereafter, the tilt-compensated signals can be used to measure formation and borehole parameters which may be associated with position and displayed in the form of borehole logs and/or images.