Migration - Revisiting Iterative Optimized Schemes
We are developing fast, efficient migration code. The latest benchmark on our 3D pre-stack Kirchoff Migration is 2.5 million traces / hour on a single bare-bones x86_64 system. Combined with our optimization technologies ( genetic algorithms, Nelder-Mead, etc ) our objective is to develop fast, iterative imaging capabilities.
We still have more testing and development before we roll out migration services....but will not need a warehouse of racked linux nodes to be competitive.
Curvature
Curvature is a measure of shape that characterizes the deviation of a surface from a plane. In seismic data curvature exposes stratigraphic and structural flexures that can be indicative of geologic processes.
OpenGeoSolutions has developed fast, accurate algorithms for deriving curvature through large data volumes for a spectrum of spatial scales (local through regional curvature). Combining curvature with Spectral Discontinuity tm overlays in a Spectral Navigator tm provides explorationists with new insights to their exploration and development targets.
Regional Curvature
Local Curvature - inset shows detail of channel / levee complex
Blueing / Coloured Inversion
Current industry practice of blueing or coloured inversion of seismic data requires that the relevant parameters are derived from a well in the area of interest.
OpenGeoSolutions has developed algorithms that permit these techniques to be carried out without the need of a control well. Furthermore, our algorithms are time variant down the seismic section, thus compensating for travel time related changes to the seismic response.
Spectral Navigator tm
OpenGeoSolutions provides custom Spectral Navigators for each project. Intuitive mouseover navigation through Spectral Decomposition, Spectral Inversion and Spectral Discontinuity results provides an extremely useful addition to standard interpretation software.
The first image shows an RGB (Red=220ms Green=230ms Blue=240ms ) combination of a 45hz Spectral Decomposition. If a particular feature of interest is red it is above 230ms, if it is blue it is below 230ms and if it is white (or gray scale) then all three levels (220ms. 230ms, 240ms) are contributing equally and the feature is centered on 230ms. In this case there is a whitish channel in the upper left quadrant. Moving the cursor over to "L" (second image) shows the Spectral Inversion Layering, which identifies the channel as a relative soft (blue). Finally moving the cursor to "D" (third image) shows the Spectral Discontinuity tm overlay that was present in the first two images.
In practise Spectral Navigators can be created with RGB's in time, frequency, offset, CBT (count between thresholds of net time in softs/hards), with cultural overlays, +, and incorporate many thousands of images.
