Technical Content

This work highlights visco-acoustic full-waveform inversion (Q-FWI) as a method for estimating high-resolution velocity and attenuation models. We present a very large, real data, case study where Q-FWI has been applied to ~36,000 km2 of 3D, narrow azimuth, variable-depth streamer data over the North ...

Land surface seismic data are usually strongly affected by the presence of surface waves, (ground-roll), which can completely obscure the underlying primary reflection signal. It is therefore crucial to isolate the reflection signal for both imaging and amplitude analysis needs. Complex near-surface conditions complicate ...

Hydrocarbon prospection with seismic data on Barents Sea can be difficult to interpret because of severe contaminations of the sections by diffracted multiples residual noises often located above the objectives. Those diffracted multiples mainly result from significant scars of the sea floor produced by ...

This paper is the second part of two papers presenting the new source-over-cable marine acquisition solution. It presents the actual large-scale ~1950 km2 marine seismic acquisition as well as discusses the novel processing and imaging involved with this unique split-spread towed marine data. The ...

This paper reviews the benefits of using “high-end new-generation” de-noising tools on a broadband single-source single-sensor Wide Azimuth survey acquired in Kuwait. A processing pilot has been conducted in a very challenging area containing agricultural and industrial zones, as well as various natural and ...

Internal multiples constitute a major challenge for imaging. Artefacts generated by incorrectly imaging internal multiples interfere with targets, affecting the interpretation and contaminating amplitude analyses in the reservoir. The Santos basin is a particularly challenging example of this problem because of the presence of ...

While full wave based velocity model building approaches have earned their stripes during the last decade, ray based approaches remain the working horse in industry. I review here first the successes and the limitations of both families of approaches. If it appears that ray ...

A Rayleigh surface wave tomography with optimal coverage approach based on the creation of virtual raypaths by interferometry is proposed. The array based conventional surface wave picking methods often provides inhomogeneous or sparse coverage for high-resolution tomography. The delivered inversion result can suffer from ...

We introduce a method for separating residual statics and NMO velocities by maximising sparsity in tau-v and tau-p domains. Surface Consistent statics are computed without a-priori knowledge about velocities needed for NMO corrections. In such way static time shifts will not be applied to ...