Reverse Time Migration of Divided‐Order Multiples

Abstract The paper analyzes the imaging theory of the reverse time migration (RTM) of multiples and the generating mechanism of the crosstalk deeply and introduces a strategy of RTM of divided‐order multiples. Firstly, the strategy uses the surface‐related multiple elimination (SRME) to suppress multiples in the original shot gather record to acquire the primary record, and by which each order multiples can be forecasted, then the RTM of each order multiples can be implemented so as to avoid the crosstalk. Model tests show that the real interfaces can be imaged accurately and the crosstalk can be suppressed effectively in the imaging sections of each order multiples based on the strategy of RTM of divided‐order multiples. Furthermore, among all the sections of each order multiples, the section of the first‐order multiples has the highest imaging precision and its imaging quality is better than that of the common RTM of multiples in the deep structures.