Technical Content

A method is described to allow quantitative usage of isotropic modeling and inversion in anisotropic media. Based on the Rüger reflectivity equations for HTI media transforms are designed for the elastic parameters used in pre-stack inversion. The transformed elastic parameters can be used in ...

A robust surface wave inversion has been developed to invert near surface S wave velocity for depth model building and shear statics correction. The algorithm utilizes mainly two most effective inversion engines: the non-linear least square Levenberg-Marquardt (LM) inversion and the differential evolution (DE) ...

Most deblending approaches utilize coherency criteria in a certain domain to separate blended signals. Due to the presence of noise, such separation in the time domain can never be perfect. Conservative deblending is often performed in order to protect primary signals. As a consequence ...

OBN SRME that combines OBN and streamer data is known to be an effective way to predict surface-related multiples in OBN data. However, the available streamer data often have limited offset/azimuth coverage. Additionally, the double source wavelets due to the cross-convolution of OBN and ...

Offshore development requires detailed understanding of subsurface reservoirs and proper well placement. Use of all available information in an integrated reservoir model leads to improved production rates and higher EUR. Conventional methods use well logs, geologic information, and structure from seismic interpretation in static ...

Azimuthal inversion is state-of-the-art inversion technology for stress and fractured reservoir characterization and detection in anisotropic media. This technology requires a wide-azimuth seismic survey and careful azimuth dependent processing with noise attenuation. In this paper, the influence of noise attenuation on the reliability of ...

3D VSP data provides a unique opportunity to improve image resolution and fault definition in the vicinity of a well. However, the processing and imaging of VSP data requires special accommodations for its distinctive acquisition geometry. In this abstract, we demonstrate two key VSP ...

A quantitative interpretation was carried out in order to improve geological model and de-risk the prospect in the next exploration drilling campaign. Recently drilled exploration wells based on conventional seismic interpretation drilled through channel levee instead of the targeted channel core. Vertical resolution, reservoir ...

Pre-stack elastic inversion requires a reliable wavelet model. This wavelet model must take into account the angle dependency of the wavelet, as well as the time dependency. This is even more important for broadband data, as the wavelets exhibit more variations, due to the ...