Seismology and Inverse Methods
Office: 105 Noble Research Center
The computational seismology lab is a Linux based workspace for analyzing seismic data. The lab hosts industry standard state-of-art software and hardware for processing, modeling, and interpreting seismic data. A few resources that the lab provides are:
• HP ProLiant DL580 G5 Server: This configuration is the best in class platform for virtualization, mainly targeted towards processing of long-offset broad bandwidth 2-D seismic lines, interpretation of 3-D seismic volumes, and rendering of geo-objects.
• HP Z400 Workstations with dual monitors mainly targeted towards integrating the non-commercial inversion and modeling codes with state-of-art commercial software hosted by the server above.
• SeisSpace®/ProMAX®: Landmark’s next generation comprehensive seismic processing system for large volume land or marine processing of 2D or 3D pre and post-stack data.
• Powerview: This innovative software provides an easy to use, dynamic, multi-windowed environment for all your geological and geophysical interpretation and visualization needs.
■AVO (Amplitude Analysis and Modeling): It analyzes the fluid content of reservoir rocks through a combination of visual, analytical and modeling processes using both pre-stack seismic and well log data. AVO is started by Geoview and can use the View3D application to view its attribute maps. The program can perform a variety of tasks, from fluid replacement modeling with the Biot-Gassmann equations, through AVO synthetic generation to AVO attribute generation and cross plotting. The AVO program also provides numerous processing features to condition data, including a parabolic radon transform utility.
■AFI (Fluid Inversion): It estimates the uncertainty in the fluid predictions from AVO. We designed the program as a seamless add-on to the AVO program. AFI uses Biot-Gassmann fluid substitution, Monte Carlo simulation and Bayesian estimation to build fluid probability maps. You then use these maps to make a quantitative analysis of the probability of exploration success.
■ISMAP (Statisticak Mapping): It is a mapping tool that statistically compares and analyzes mapped data. Typical data inputs are a combination of dense, 'fuzzy' data such as seismic attribute maps, and sparse, accurate data such as well log values. The objective is to create a new map which honors the sparse well data, while using the dense data to guide the interpolation between wells. Among the tools in ISMAP is a set of geostatistical analysis tools for measuring and modeling the spatial continuity patterns.
■STRATA (Pre- and Post-Stack inversion): A program used to perform both post-stack and pre-stack seismic inversion. In the classic post-stack domain, STRATA analyzes 2D or 3D post-stack seismic volumes to produce an acoustic impedance volume. In the pre-stack domain, STRATA analyzes angle gathers or angle stacks to produce volumes of acoustic impedance, shear impedance and density
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