Reverse Time Migration of Multiples (RTMM) adapted for OBN data with examples from deepwater Gulf of Mexico.
Technical Content
Joint PP-PS inversion without prior data registration
Joint PP-PS inversion without prior data registration
Standard joint AVO inversion of PP and PS seismic data rely on a registration process beforehand to align PP and PS data in a common time domain. This is a difficult step prone to error that may deteriorate the inversion results. We present a ...
Unlocking the full potential of broadband data with advanced processing and imaging technology, a case study from NWS Australia
Unlocking the full potential of broadband data with advanced processing and imaging technology, a case study from NWS Australia
The high costs associated with hydrocarbon exploration in deepwater have led to an increased business demand for acquisition and processing of high-resolution broadband seismic data. In this paper, we review our experience of working on the Shell Sandman 3D survey, which was acquired using ...
Estimation of Uncertainties in Fault Lateral Positioning on 3D PSDM Seismic Image - Example from the NW Australian Shelf
Estimation of Uncertainties in Fault Lateral Positioning on 3D PSDM Seismic Image - Example from the NW Australian Shelf
We present a two-step sequence to estimate uncertainties in lateral positioning of fault planes on 3D PSDM seismic images. The first step provides an approximate evaluation of what causes the uncertainties, how uncertainties are distributed in 3D space and what to expect within our ...
Automatic Gas Pockets Detection by High-resolution Volumetric Q-tomography Using Accurate Frequency Peak Estimation
Automatic Gas Pockets Detection by High-resolution Volumetric Q-tomography Using Accurate Frequency Peak Estimation
Conventional imaging does not deal adequately with absorption, especially in the case of strong anomalies. Over recent years, many authors have proposed to compensate the absorption loss effects inside of the migration through the use of an attenuation model. Q tomography has been developed ...
Attenuating pseudo S-waves in acoustic anisotropic wave propagation
Attenuating pseudo S-waves in acoustic anisotropic wave propagation
The importance of anisotropy in seismic imaging has been recognized for several decades. In recent years, a growing number of anisotropic applications of reverse time migration (RTM) and full waveform inversion (FWI) have attempted to account for anisotropic effects of the real-world subsurface physics ...
In shallow water environments, water-layer related multiples (WLRMs) typically dominate other classes of multiple, and achieving effective attenuation of WLRMs is of significant interest. When combined with an appropriate adaptive subtraction, Model-based Water-layer Demultiple (MWD) has been found to be highly effective in attenuating ...
Joint Low-rank and Sparse Inversion for Multidimensional Simultaneous Random/Erratic Noise Attenuation and Interpolation
Joint Low-rank and Sparse Inversion for Multidimensional Simultaneous Random/Erratic Noise Attenuation and Interpolation
Several methods have been proposed to improve the signal-to-noise ratio by attenuating incoherent noise, including prediction error filtering (Canales 1984), projection filtering (Soubaras 1995), and more recently rank reduction filtering. In this last category, we can differentiate eigenimage filtering (Trickett 2003), Cadzow / Singular ...
Highlighting Horda - recent developments over the Horda platform
Highlighting Horda - recent developments over the Horda platform
An overview of the general oil exploration landscape in Norway with a description of the Horda survey, concentrating on the acquisition, but including references to the complete integrated geoscience package that will eventually be delivered