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Analysis of Multi Measurement Broadband Data - A Case Study from the North SeaNormal access

Authors: A. Raj, O.P. Munkvold, L.P. Letki, P. Smith, A. Zarkhidze and A. Cooke
Event name: 77th EAGE Conference and Exhibition 2015
Session: Broadband - Case Studies and Land
Publication date: 01 June 2015
DOI: 10.3997/2214-4609.201413433
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.48Mb )
Price: € 20

Summary:
As a part of the reservoir characterization and development plan for a North Sea oil field, a multi-measurement survey was acquired and processed in 2012 (Ostmo et al. 2014) . In order to assess the viability of such multi-measurement data for future time-lapse reservoir monitoring, a subset of the sail lines were repeated. This paper presents the results from the processing and analysis of this time-lapse experiment. Recent advances in marine streamer acquisition and processing techniques have enabled the bandwidth restriction caused by the streamer ghost to be overcome to a greater or lesser degree. However a full 3D removal of the ghost requires measurement of the pressure wave-field and its vertical and crossline gradients. Having acquired such a dataset, we can select individual components for processing, and so compare different de-ghosting strategies and their effect on time-lapse attributes.


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