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Technical Content

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Chris Davison, Gordon Poole © 2015 EAGE | June

A precise knowledge of the seismic source far-field signature is required for accurate source de-signature. Near-field hydrophone data can be used to provide good quality signatures but are not always available. We describe a method of extracting the far-field signature from inversion of direct ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Jim Gaiser © 2015 EAGE | June

Changes in fracture direction across interfaces can have an important impact on PS-wave reflection coefficients in azimuthally anisotropic media. Extending conventional joint inversion with P-waves to include amplitude variations with azimuth (AVAz) would use radial and transverse reflection coefficients (RPSV and RPSH, respectively), and ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Melanie Vu, Jing Yang, Xu Li, Dekang Xu, Hui Chen, J. Chen, B. Almoughraby © 2015 EAGE | June

We presented a joint tomography flow for OBN and streamer WAZ data in deep water Gulf of Mexico. This tomography provides the method to utilize surface offset gathers from surveys with different shot and receiver datums together for joint tomography. By incorporating both OBN ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Arash Jafargandomi, Henning Hoeber, Thierry Coleou, Peter Mesdag © 2015 EAGE | June

We discuss methods to quantify the impact, reliability and value of low frequencies as provided in modern towed streamer broadband acquisitions. Acquisition, processing and inversion all have a role to play in creating reliable low frequency data. In this paper, focusing on marine data ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Yonghe Guo, Masamichi Fujimoto, Shiping Wu, Yuki Sasaki © 2015 EAGE | June

Thrust complex imaging in the Timor Trough suffers from the fault shadows due to strong lateral velocity variation. We demonstrate a new workflow to tackle this. Broadband seismic data were acquired with high signal-to-noise ratio of low frequency. With broadband input, FWI derived better ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Luis Cypriano, Fabien Marpeau, Ricardo Brasil, Guilherme Welter, Herve Prigent, Huub Douma, M. Velasques, J. Boechat, P. de Carvalho, C. Guerra, C. Theodoro, A. Martini, J. Nunes Cruz © 2015 EAGE | June

The carbonates in the pre-salt area of the Santos basin off-shore Brazil are good candidates for potential reservoirs of hydrocarbons. The presence of highly reflective stratified salt in this basin, combined with the focusing of energy due to the concave shape of these reflectors ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Gordon Poole, Chris Davison, Abderrahim Lafram © 2015 EAGE | June

While 5D data reconstruction has become widespread in recent years, we show that the use of 5D model spaces in some settings may result in sub-optimal handling of structures exhibiting HTI traveltime behaviour. To overcome these problems we propose the use of a 6D ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Gordon Poole, James Cooper, Simon King, Ping Wang © 2015 EAGE | June

While sufficient for many deep water datasets, vertical designature in shallow water environments can lead to unsatisfactory levels of ringing and amplitude striping, particularly on outer streamers where the assumption of a vertical farfield signature is least accurate. In this paper we modify the ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Ping Wang, Kawin Nimsaila, Dongping Zhuang, Zhan Fu, Hao Shen, Gordon Poole, Nicolas Chazalnoel © 2015 EAGE | June

Receiver deghosting has been widely used to extend the bandwidth of marine seismic data. Efforts have also been made to remove the source ghost and signature to further maximize the bandwidth of the acquired seismic data. We present an inversion scheme for angle-dependent source ...