Technical Content

This paper presents leanings from the 2015 and 2016 North Sea acquisition season with regards to acquiring data with lots of seismic interference noise.

Kaskida is a large three-way reservoir underneath a complex salt body and truncated by a salt weld. Seismic imaging at the reservoir level is impacted by the inhomogeneous illumination from the complex overburden, which distorts the amplitude of reservoir reflectors and generates lots of ...

By August 2014 a full Permanent Reservoir Monitoring system was installed at the Grane field; since going live, five PRM surveys have been acquired. This paper describes how a robust sequence has been designed and optimized, thanks to the successful collaboration between processing (CGG) ...

We present a workflow for 3D MAZ PSDM velocity modeling with tilted orthorhombic anisotropy. We focus on two aspects of depth-velocity modeling that are extremely important for seismic data from the NW Australian shelf: (1) high resolution adaptive seismic tomography to deal with strong ...

It is well known that imaging of complex regions can be significantly improved with increased illumination in terms of offset and azimuth sampling. In this case study we illustrate how an existing large scale acquisition can be enriched by acquiring a second complementary survey ...

Absorption effects in the Earth attenuate high frequency seismic signal progressively with depth, reducing resolution and limiting the interpretability of the data. Conventional post-migration Q compensation methods often rely on artificial mechanisms to limit amplification of noise, at the expense of unintentionally restricting recovery ...

This paper describes a successful reservoir characterization workflow where geostatistical inversion was first carried out to characterize caves and vugs, and then azimuthal inversion was used to obtain fractures strike and density. It improves the precision of reservoir prediction, and effectively characterizes the distribution ...

We present a method to estimate and correct the phase of broadband seismic data in the low-frequency range using the tomography velocity model as an analogy for subsurface geology. The high-resolution velocity model is obtained from travel-time tomography and therefore has minimal influence from ...

In recent years there has been tremendous progress in the resolution and accuracy that can be obtained in seismic images. Several techniques are now available to achieve a high-definition final image. In the Cap-Boujdour dataset from offshore Morocco, the imaging is challenging due to ...