Wide Azimuth 3D SRME
 

3D SRME is a data-driven technique used to remove multiples from marine surveys.  This technology has been in use at Bulwark/GXT for over three years on standard narrow azimuth towed streamer surveys and has recently been engineered to process wide azimuth data. 

A model of the multiples is generated from the input data without knowledge of the subsurface, thus they are multiple predictions. In the Bulwark/GXT 3D SRME workflow, considerable effort has been spent to understand the signal processing necessary to accurately build those multiple predictions. In addition to modifying the multiple prediction engine, Bulwark/GXT has also developed new  algorithms for the adaptive subtraction phase of 3D SRME.  Because Bulwark/GXT's 3D SRME algorithm was purpose-built for wide azimuth ocean bottom surveys as well as standard towed streamer surveys, only minor modifications were required.