Technical Library

In this paper, we present a novel algorithm that performs adaptive subtraction of a multiple model in the curvelet domain. The algorithm is based on the observation that the predicted model is an...

Images of primaries and multiples can be contaminated by erroneous phantom images caused by the crosstalk of multiply scattered events. Using a causality property of the events in separated up- and...

There are many factors which affect the quality of a subsurface image: acquisition geometry, data quality, accuracy of the subsurface model, imaging algorithm, image post-processing steps, etc....

Over the past five years, extensive 2D long offset broadband seismic data (110,000 line km) has been acquired offshore Newfoundland and Labrador, Canada. These new seismic programs have targeted the...

We address the signal and noise separation problem where the noise is coherent. We use a dictionary learning method to learn a dictionary of unit vectors called atoms; each one representing an...

We propose a new regularization scheme for Full Waveform Inversion (FWI). The new method makes use of a priori information on the spatial variability of the earth model to overcome the limitations of...

The resolution of resistivity models from 3D inversion of Towed Streamer EM data is analyzed using the resolution matrix. In particular, a new resolution length derived from the resolution matrix is...

This presentation reviews imaging technologies applied to both primaries and multiples, with particular emphasis on the value of multiples in wide azimuth scenarios. Included is a discussion of...

For almost 10 years now marine broadband seismic has provided the industry access to seismic data with a significant increase of seismic frequency bandwidth on both the low side of the frequency...

Reflection tomography is an effective way to build anisotropic velocity and Q models for seismic imaging. However, reflection tomography suffers from a nonuniqueness problem, even when it only...