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4D Processing between Variable-depth and Conventional Streamer DataNormal access

Authors: P. Charrier, Z. Yu and T. Rebert
Event name: 74th EAGE Conference and Exhibition incorporating EUROPEC 2012
Session: Time Lapse Processing
Publication date: 04 June 2012
DOI: 10.3997/2214-4609.20148242
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 1.08Mb )
Price: € 20

Processing data with variable-depth streamer acquisition has recently become possible through a new advanced algorithm called joint deconvolution (Soubaras, 2010). In this particular acquisition, the receiver depth increases smoothly with offset and this allows for a wide diversity of receiver ghosts to be recorded. This acquisition and associated processing increases dramatically the possible frequency bandwidth. While most acquisitions in the future will certainly be realized with broadband techniques, the question of 4D matching between conventional and BroadSeis data must now be addressed during an intermediate period when the baseline data is a conventional acquisition. The case between BroadSeis and conventional data has one problem to solve: the difference in cable profiles. This paper considers this problem, addresses the following topics: wavelet processing, time de-striping, 4D binning, regularization, imaging, final matching and demonstrates that a relevant 4D response can be obtained.

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