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Technical Content

Technical Abstract
SEG - Society of Exploration Geophysicists | Ziqin Yu, Ping Wang, Brad Wray, Suryadeep Ray, Wei Zhao, Zhigang Zhang © 2015 SEG | October

Low-frequency seismic data are crucial for the success of full waveform inversion (FWI) used in velocity model building. Marine acquisition technologies have evolved to increase low-frequency seismic signals. However, significant low-frequency noise, often caused by water flowing across the streamers, still alters the signal-to-noise ...

Technical Abstract
SEG - Society of Exploration Geophysicists | Xu Li, Jing Yang, Hui Chen, Melanie Vu, Ping Wang © 2015 SEG | October

Ocean bottom node (OBN) data by nature have a broader bandwidth; however, the presence of source-side ghosts can reduce the useful frequency range and therefore damage seismic resolution. We demonstrate the benefits of 3D deghosting for OBN data from the Gulf of Mexico (GOM) ...

Technical Abstract
SEG - Society of Exploration Geophysicists | Fatiha Gamar, Diego Carotti, Patrice Guillaume, Amor Gacha, Laurent Lopes © 2015 SEG | October

Over recent years, many authors have proposed to compensate the absorption loss effects inside of the imaging process through the use of an attenuation model. This is more particularly necessary in the presence of strong attenuations anomalies. Q tomography has been developed for estimating ...

Technical Abstract
EAGE workshop/forum/local conference | Carsten Scholl, Jan Neumann, Don Watts © 2015 EAGE | September

We have developed a method to jointly depth invert frequency and time domain Airborne EM data in complex topographic and geologic environments, in 2.5D and 3D. Inversion of synthetic and field data show that using AEM data sets with complimentary information (geo-steering) increases the ...

Industry Article
First Break | Steve Hollingworth, Owen Pape, Chris Purcell, Ewa Kaszycka, Trevor Baker, John Cowley, Gregor Duval, Luke Twigger © 2015 EAGE | September

Article describes application of TomoML to our 35,000 km2 Cornerstone survey in the North Sea. Also make reference to broadband deghosting, dip-constrained channel tomography and dual azimuth.

Industry Article
Interpretation (SEG+AAPG) | Jon Downton, Benjamin Roure © 2015 SEG and AAPG | August

Amplitude versus Offset and Azimuth (AVOAz) Analysis can be separated into two separate parts; Amplitude versus Offset (AVO) analysis and Amplitude versus Azimuth (AVAz) analysis. Useful information about fractures and the anisotropy is obtained by just examining the AVAz. The AVAz can be described ...

Industry Article
The Leading Edge | Zhiping Yang, Jeshurun Hembd, Hui Chen, Jing Yang ©2015 SEG | July

Marine seismic acquisitions record both primary and multiple wavefields. In a typical processing sequence, multiple energy is removed from the data before migration. However, there may be valuable information contained in the multiple wavefield. To discover this hidden information, reverse time migration of multiples ...

Industry Article
World Oil | Gregor Duval, Jo Firth © 2015 Gulf Publishing Company | July

A case study of the acquisition and background to the integrated multi-client geoscience project over the Gabon South basin.The deepwater area of the Gabon South basin is one of the last underexplored areas of the West Africa Atlantic Margin. CGG is acquiring and imaging ...

Industry Article
Seismic Profile | Jo Firth © 2015 www.seismicprofile.com | July

Successful development of known fields requires high-quality seismic data in order to accurately delineate the reservoir through processes such as seismic inversion and reservoir characterization studies. In the new oil price regime this has become even more important as oil companies try to keep ...

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