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 ...
In offshore prospective areas, oil slicks at the sea surface are often seen as being the visible expression of a working petroleum system at depth. Synthetic Aperture Radar (SAR) has proven to be an effective tool for identifying these oil slicks by virtue of ...
This paper presents recent advances in the area of seismic interference (SI) attenuation. We show how high amplitude and broadside SI noise can be nearly perfectly attenuated as long as the interfering noise is shot-to-shot incoherent. Furthermore, we present a new algorithm that also ...
In this paper we present a new marine seismic acquisition technique initially developed to meet imaging challenges of the Loppa High in the Norwegian Barents Sea. Two seismic vessels operate in tandem; one streamer vessel towing a spread of deep, densely spaced streamers, and ...
Survey design comparison regarding seismic reservoir characterization objectives: a case study from South Tunisia L. Michou, L. Michel, P. Herrmann, T. Coleou, P.Feugere, J.L. Formento The objective of this onshore survey designs’ comparison case study is to highlight the impact of the acquisition trace ...
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) ...
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 ...