A time feld search method for AE source location with a regional velocity model

A time-feld search method was proposed for AE event source location, combining the grid search method and the database technique. Theoretical process was given, and laboratory hydraulic fracture stimulation experiments under true-triaxial confning stresses were performed to prove the practicability of the method. A regional velocity model with variable wave velocities and directionality was required to ft observations. The location results showed that time-feld location method obtains the global optimal source location solution with a relatively high efciency and accuracy.