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System for the Attenuation of Water Bottom Multiples in Seismic Data Recorded by Pressure Sensors and Particle Motion Sensors
System for the Attenuation of Water Bottom Multiples in Seismic Data Recorded by Pressure Sensors and Particle Motion Sensors
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机译:压力传感器和质点运动传感器记录的地震数据中水底多重波衰减系统
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摘要
An up-going wavefield and a down-going wavefield are calculated at a sensor position from a pressure sensor signal and a particle motion sensor signal. Then, an up-going wavefield is calculated at a water bottom position substantially without water bottom multiples from the up-going and down-going wavefields at the sensor position. In one embodiment, the up-going wavefield at the sensor position is backward propagated to the water bottom, resulting in an up-going wavefield at the water bottom. The down-going wavefield at the sensor position is forward propagated to the water bottom, resulting in a down-going wavefield at the water bottom. The up-going wavefield at the water bottom without water bottom multiples is calculated from the backward propagated up-going wavefield at the water bottom, the forward propagated down-going wavefield at the water bottom, and a reflection coefficient of the water bottom.
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