2 D HIGH RESOLUTION MARINE SEISMIC DATA PROCESSING BY USING SEISMIC UNIX: PART- 3: GEOMETRY SETTING

DESCRIPTION: Geometry setting is an updating trace identity, consists of shot coordinate, group (receiver) coordinate,  source-receiver offset, and also setting common depth point (CDP). The objective of geometry setting is to obtain valid trace header values from acqusition geometry, especially the information belonging to the same subsurface depth (CDP) for improving S/N ratio. Geometry setting requires acquisition parameters and navigation data.  Either recorded navigation in an external file such as UKOOA P1/90 format (*.p190) or registered in the trace header is used to set geometry. Trace headers must already have the correct...

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2 D HIGH RESOLUTION MARINE SEISMIC DATA PROCESSING BY USING SEISMIC UNIX: PART- 2: TRACE EDITING

DESCRIPTION: Before setting geometry, applying signal enhancement, and further processing, it is necessary to edit the incorrect traces and to kill bad traces. If any, the content of incorrect polarity and bad traces can be obtained from observer log or done manually from trace display observation. The objective of trace editing is to correct bad traces to be good traces. In this stage, we will eliminate the “misfire” records, delete auxiliary traces, reverse incorrect trace polarity (if any), and kill dead traces (if any) from previously processed data. Thus, we may obtain decent data to be used for the next processing stage. Author : Henry...

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