By V. P. Dimri, R. P. Srivastava, Nimisha Vedanti
Researchers within the box of exploration geophysics have constructed new tools for the purchase, processing and interpretation of gravity and magnetic info, according to specific investigations of bore wells all over the world. Fractal types in Exploration Geophysics describes fractal-based types for characterizing those complicated subsurface geological structures.
The authors introduce the inverse challenge utilizing a fractal technique which they then advance with the implementation of an international optimization set of rules for seismic facts: very speedy simulated annealing (VFSA). This process presents high-resolution inverse modeling results-particularly important for reservoir characterization.
* Serves as a worthy source for researchers learning the applying of fractals in exploration, and for practitioners without delay employing box facts for geo-modeling * Discusses the elemental rules and functional functions of time-lapse seismic reservoir tracking technology-application quickly advancing subject * presents the basics for these attracted to reservoir geophysics and reservoir simulation examine * Demonstrates an instance of reservoir simulation for better oil restoration utilizing CO2 injection
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Extra resources for Fractal Models in Exploration Geophysics: Applications to Hydrocarbon Reservoirs
VERY FAST SIMULATED ANNEALING VFSA is a modified form of simulated annealing (SA)—a global optimization method used in many geophysical parameter estimation problems. , 1953). In this study, we have used VFSA as an optimization module where we draw a prior realization from a fractal-based technique. To make the discussion self-contained, we outline here, in brief, the concepts behind VFSA optimization. Detailed description of VFSA and its applications to exploration geophysics can be found in Ingber (1989) and Sen and Stoffa (1991, 1995).
The technique has another advantage of using very few parameters; hence, it provides faster solutions than the conventional methods, wherein for describing geometry itself, many vertices are used. The method is tested with synthetic models and has been applied to model the real gravity data. 1. INTRODUCTION Inversion of seismic data plays a vital role in reservoir characterization. , 2003; Sen, 2006). Such models are good for reservoir characterization and model building. Edited well logs provide the most accurate and the best vertical resolution of geophysical information of a subsurface reservoir.
Example 4: Application of Affine Companding In the above examples, geometrical shapes were generated using Voronoi tessellation, wherein the extent of tessellated region in x and z directions is almost the same or comparable. However, if one of the dimensions either in x or z is too large, then the generation of geometrical shapes using Voronoi tessellation does not give the desired geometrical shape. Hence, we have incorporated the concept of affine companding to generate the models of longer horizontal extent than the vertical and vice versa.
Fractal Models in Exploration Geophysics: Applications to Hydrocarbon Reservoirs by V. P. Dimri, R. P. Srivastava, Nimisha Vedanti