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Technical Content

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Hui Huang, Ping Wang, Shuming Hu © 2015 EAGE | June

Model-based water-layer demultiple (MWD) is an effective method for attenuating water-layer-related multiples (WLRMs), especially in shallow water environments. Regular 3D MWD use regularized common-offset cubes for both shot- and receiver-side multiples. We propose a selective-input adaptation of the regular 3D MWD workflow that uses ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Carlos Rivas, Hui Chen, Chu-Ong Ting, © 2015 EAGE | June

Blended acquisition of ocean bottom node (OBN) surveys may provide important time savings when the survey duration is tightly constrained. We present a method that focuses on the deblending of OBN data recording two simultaneous sources in the Gulf of Mexico. By knowing the ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Matthieu Retailleau © 2015 EAGE | June

The scope of this paper is to illustrate how surface-consistent deconvolution operators can help to image the shallow subsurface on land data. Two case studies from modern, dense, wide-azimuth surveys recently acquired in Oman are presented. The predictive deconvolution operators were computed from an ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Teng Cao, Nicolas Vidal, Diego Carotti, Amir Kabbej, Marie-Laure Gaquere © 2015 EAGE | June

Anisotropic parameter estimation is very challenging for new exploration areas where there are no wells. In an offshore survey of over 3000 km2 in the west of Africa, we used surface seismic data in a non-linear tomographic inversion to simultaneously estimate migration velocity and ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Benjamin Roure, Vimol Souvannavong, Jean-philippe Coulon, Dan Hampson © 2015 EAGE | June

Standard joint AVO inversion of PP and PS seismic data rely on a registration process beforehand to align PP and PS data in a common time domain. This is a difficult step prone to error that may deteriorate the inversion results. We present a ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Joe Zhou, Peter Chia, Jingyu Li, Henry Ng, Sergey Birdus, Keat Huat Teng, Ying Peng Phan, Jason Sun, Yi He © 2015 EAGE | June

The high costs associated with hydrocarbon exploration in deepwater have led to an increased business demand for acquisition and processing of high-resolution broadband seismic data. In this paper, we review our experience of working on the Shell Sandman 3D survey, which was acquired using ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Sergey Birdus, Vincent Ganivet, Alexey Artemov (CGG); Ray Teakle, Paul Phythian (Chevron) © 2015 EAGE | June

We present a two-step sequence to estimate uncertainties in lateral positioning of fault planes on 3D PSDM seismic images. The first step provides an approximate evaluation of what causes the uncertainties, how uncertainties are distributed in 3D space and what to expect within our ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Fatiha Gamar, Patrice Guillaume, Antonio Pica, Geoffroy Pignot, Paolo Poggi, Anne Henry-baudot, Anthony Prescott, Amor Gacha, Diego Carotti, Vincent Prieux © 2015 EAGE | June

Conventional imaging does not deal adequately with absorption, especially in the case of strong anomalies. Over recent years, many authors have proposed to compensate the absorption loss effects inside of the migration through the use of an attenuation model. Q tomography has been developed ...