Technical Library

Typically VTI model parameter estimation is achieved through multiple iterations of depth migration, residual moveout estimation, and linearized tomography. In this paper we discuss a method to...

Seismic interference (SI) still is a considerable problem in marine seismic acquisitions. Looking at the number of marine seismic surveys that are acquired in close vicinity of each other nowadays,...

We demonstrate a novel workflow using reflections, refractions and multiples for building highly accurate PSDM velocity models for a complex geological setting. By combining wavelet shift tomography,...

The integration of Towed Streamer EM data with 3D seismic data offers unprecedented possibilities to extract quantitative estimates of the most important reservoir characteristics. The workflow is...

The normal derivative of the pressure field at a recording surface has proven to be very useful information for deghosting and extrapolation of marine seismic data. The Kirchhoff Helmholtz integral...

In the application of reverse time migration (RTM) to wide and full azimuth data, it important not only to produce a final RTM image, but also to decompose the data into prestack gathers that can be...

Anisotropic depth model building using surface seismic data alone is non-unique and one of the major reasons is that there is ambiguity among the anisotropy parameters. Additional well data can help...

The measured Towed Streamer EM data from a survey in the Barents Sea, undertaken in the Norwegian sector are inverted as a series of unconstrained 2.5D inversion. We show that unconstrained...

Dual-sensor streamer acquisition allows the incident wavefield to be decomposed into up- and down-going parts. This operation can be performed for any arbitrary recording surface, and the data can...

A first-ever five-vessel towed streamer configuration with all vessels participating in a simultaneous shooting scheme is presented that delivers uniformly-sampled offset-azimuth bin populations....