system for measuring acoustic signals in an annular region, method for measuring acoustic signals in an annular region, system for measuring acoustic signals in a perforated hole wall, method for measuring acoustic signals in a perforated hole wall, system for measuring acoustic signals within a well interior tool, and method for measuring acoustic energy propagating within a well interior tool.

摘要

Methods and related systems are described for measuring acoustic signals in an annular region. The system includes a tool housed in a tool housing for deployment downhole in a borehole, a downhole pumping system mounted within the tool housing and adapted to pump fluid between the tool and an annular region defined by at least the tool housing and a wall of the borehole, and an acoustic transducer mounted on the tool adapted to be in acoustic communication primarily with the annular region. Methods and related systems are also described for measuring acoustic signals on a borehole wall, and for measuring acoustic signals within a downhole tool.