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A Coil Shooting - Acquisition Case Study in the Angolan Deep OffshoreNormal access

Authors: , P. Capelle, L. Bovet, S. Tchikanha and D. Hill
Event name: 74th EAGE Conference and Exhibition incorporating EUROPEC 2012
Session: Wide- & Multi Azimuth Acquisition
Publication date: 04 June 2012
DOI: 10.3997/2214-4609.20148774
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 694.24Kb )
Price: € 20

This paper presents a seismic acquisition case study in the Angolan deep offshore where coil shooting technique has been designed and implemented to deliver a high fold and full azimuth coverage around a sub-salt target area. During the acquisition phase, near real time 3D modeling was run on-board the seismic vessel as a part of the acquisition QC to assess the achieved coil coverage. The seismic survey was safely completed in three weeks with no incidents recorded. High production rates were achieved thanks to the continuous shooting allowed by the Coil technique. Preliminary fast track processing results of Coil data show encouraging imaging enhancement when compared to the conventional narrow azimuth data that was acquired in the same area and period.

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