Reducing Run Times for Deepwater Reverse Time Migration 

The challenges for the exploration and production of hydrocarbons from the deepwater portion of the outer Continental Shelf include high costs and a high level of environmental risk. Lowering the overall cost and risk of exploration in deepwater environments with complex salt formations depends critically on the accurate imaging of the salt geometry and sub-salt structure. Typically imaged by reverse time migration, this method is computationally expensive with long run times.

In this technical paper, Accelerating True-amplitude RTM of Deepwater Data Using Analytic Redatuming, Acceleware researchers present a method for reducing the runtime of deepwater reverse time migration via analytical redatuming.  The theory is discussed and numerical and field examples are presented.