Technical Content

In this paper we present a practical extension of earlier work on the estimation of anisotropy parameters from isotropic techniques. We will take a closer look at the implications of working with effective elastic parameters in anisotropic (TI) seismic reflection inversion. In particular, for ...

We use the concepts of entropy and information theory to design a confidence measure for Bayesian facies estimations. Bayesian analyses provide the probabilities of occurrence of each constituent facies in a set. The entropy analysis uses all of these to establish a Confidence Index ...

The use of existing geological and structural maps, previous 2D seismic profiles, boreholes and correlation models between these data is sufficient to understand basin structure and thermal systems on a regional scale. However, this is not sufficient on a scale of a geothermal site....

Well planning is one of the most demanding aspects of drilling engineering for hydrocarbons. Hence, seismic exploration objectives often require the interpretation of the seismic image as early as possible to facilitate well planning. This task becomes challenging when one needs to employ advanced ...

FWI velocity models do not necessarily ensure an optimal flattening of common image gathers (CIG). A fundamental reason for this is that mid to high wavenumbers are brought into the model by the reflection amplitudes, which are only partly explained by changes in velocity ...

Summary of the evolution based processing and imaging of the Montrose/Arbroath fields of the Central North Sea, with a focus on new demultiple technology in the form of wave equation deconvolution, Ghost Wavefield Elimination using legacy NFH recordings, joint reflection/refraction tomography followed by Q-FWI ...

We discuss the advantages of multidimensional (in data space) optimal transport (OT) full waveform inversion (FWI). We show that a careful formulation results into an enhanced coherency of the events continuity in the move-out direction, that leads to an improved velocity update compared to ...

Main authors are BP and CGG are co-authors so limited on what updates can be made. Ongoing thoughts are that CGG would like more acknowledgment for the "EVO"; approach but other than that happy with the content.

Shallow S-wave velocity model building is very important to land and Ocean Bottom Seismic (OBS) PS data processing. Surface wave, propagating along near surface, brings lots of useful information of shallow lithology which is good for near surface S-wave velocity estimation. In this study ...