WIT Inc. offers Surface Related Multiple Elimination (SRME) as a service. This algorithm is most useful in marine environments where strong, dipping multiple generators exist. The reflection coefficient of salt in the Gulf of Mexico is around 0.3, meaning that salt-related multiples are often very strong. When the salt geometry is complicated, or even just dipping, pegleg multiples have moveout patters that deviate from the parabolic assumption of Radon demultiple. For your salt-related multiple problems, WIT's SRME provides an excellent solution.

SRME is a fairly demanding algorithm computationally, but the automatic, fault-tolerant parallelism built into SeisPak^TM reduces the computational burden significantly. A 3D extension of the 2D SRME algorithm is currently under development by WIT Inc.

SRME Results on BP 2D Velocity Benchmark Synthetic Data

Click on any of the small images below to view the results of WIT's 2D SRME tool, followed by Shot Gather migration, performed on a the BP 2D Velocity Benchmark Synthetic dataset. The seabed-top salt pegleg multiple is very strong, and what's worse, when migrated, this event mimics a base salt reflection on the model's right salt body. WIT's SRME algorithm very effectively attenuates this event, as well as other strong surface-related multiples in the data.

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