Abstract：Starting from WRW model theory,the paper proposed max-energy integration imaging technique based on common focus imaging theory, which supposes there exist a virtual receiver point and a virtual source point at a certain underground depth point.The receiver focus of backwards continuation of upgoing wavefield at that depth point can be fulfilled by using data matrix to carry out post-time-shift weighted stack, The source focus of backwards continuation of downgoing wavefield at that depth point can be fulfilled by using CFP gathers to carry out post-time-shift weighted stack,producing the imaging results at that grid point,and finally the imaging wavefield at t=0 can be detected.The kernel technique lies in computation of focus operator (Green function).Based on one-way wave equation, the paper computes the 3-D focus operator with maximum energy within useful band scope of seismic waves,and finishes max-energy integration depth imaging based on common focus imaging theory.The imaging precision of the approach presented by the paper closes to that of wave equation approach, and the approach has same characters of suitable to field geometry and high computational efficiency as common integration method has, and is practical approach with both precision and efficiency.
