The Tui 3D Seismic Survey Taranaki Basin, New Zealand: Reprocessing 2009

Abstract

In early 2009 AWE Limited (AWE), as operator of the Tui field, conducted a review of original 3D seismic data processing done in 2003 and 2005 and identified a number of additional elements in the workflow that could, as a result of new processing technology, lead to improvement in the data quality of this 3D survey. The additional elements included new processing technology that was not available in 2005 and also a redesign of the processing sequence to include or modify the steps used in the original processing project. These processes included surface multiple attenuation, tidal statics, bin centring and additional Radon demultiple. The work started with test processing over a key 100 sq. km. area of the field. Good results from this test volume led to full reprocessing of the entire 3D data set. This paper describes the redesign of the 3D processing sequence and shows examples of the improvements we obtained using a current state of the art workflow to reprocess the data set.