Potential-field-data imaging of complex geological features in deepwater salt-tectonic regions in... more Potential-field-data imaging of complex geological features in deepwater salt-tectonic regions in the Gulf of Mexico remains an open active research field. There is still a lack of resolution in seismic imaging methods below and in the surroundings of allochthonous salt bodies. In this work, we present a novel three-dimensional potential-field-data simultaneous inversion method for imaging of salt features. This new approach incorporates a growth algorithm for source estimation, which progressively recovers geological structures by exploring a constrained parameter space; restrictions are posed from a priori geological knowledge of the study area. The algorithm is tested with synthetic data corresponding to a real complex salt-tectonic geological setting commonly found in exploration areas of deepwater Gulf of Mexico. Due to the huge amount of data involved in three-dimensional inversion of potential field data, the use of parallel computing techniques becomes mandatory. In this sen...
Electrochemical electrodes comprise multiple phenomena at different scales. Several works have tr... more Electrochemical electrodes comprise multiple phenomena at different scales. Several works have tried to model such phenomena using statistical techniques. This paper proposes a novel process to work with reduced size images to reconstruct microstructures with the Simulated Annealing method. Later, using the Finite Volume Method, it is verified the effect of the image resolution on the effective transport coefficient (ETC). The method can be applied to synthetic images or images from the Scanning Electron Microscope. The first stage consists of obtaining the image of minimum size, which contains at least 98% of the statistical information of the original image, allowing an equivalent statistical study. The image size reduction was made by applying an iterative decimation over the image using the normalized coarseness to compare the amount of information contained at each step. Representative improvements, especially in processing time, are achieved by reducing the size of the reconst...
34.1 INTRODUCTIONThe current progress in computer technology has allowed for the processing of nu... more 34.1 INTRODUCTIONThe current progress in computer technology has allowed for the processing of numeric schemeswith increasing efficiency and speed; nevertheless, to take advantage of the new technologies likeMMX, SSE3 and the automatic parallelization, it is necessary to write the source code in suchway that the compilers can carry out the necessary optimizations, and to generate specific codefor each processor so that maximum advantage can be taken of the hardware. The current trendis to introduce independent cores of processing in the processors that can work on different codesequencesinformofexecutionthreads.ForexamplethenewIntelquad-coreprocessorcanmanagefour different execution sequences at the same time and, in the future, each core will be enabledwith the hyper treading technology giving a similar performance like six processors integrated ina single chip.Thestructureofthenewcompilersallowsforgeneratingspecificcodefordifferentarchitectures,includingthetechnologyofdualorquadco...
The ejectors are used commonly to extract gases in the petroleum industry where it is not possibl... more The ejectors are used commonly to extract gases in the petroleum industry where it is not possible to use an electric bomb due the explosion risk because the gases are flammable. The steam ejector is important in creating and holding a vacuum system. The goal of this job is to develop an object oriented parallel numerical code to investigate the unsteady behavior of the supersonic flow in the ejector diffuser to have an efficient computational tool that allows modeling different diffuser designs. The first step is the construction of a proper transformation of the solution space to generate a computational regular space to apply an explicit scheme. The second step, consists in developing the numerical code with an-object-oriented parallel methodology. Finally, the results obtained about the flux are satisfactory compared with the physical sensors, and the parallel paradigm used not only reduces the computational time but also shows a better maintainability, reusability, and extensibility accuracy of the code.
Potential-field-data imaging of complex geological features in deepwater salt-tectonic regions in... more Potential-field-data imaging of complex geological features in deepwater salt-tectonic regions in the Gulf of Mexico remains an open active research field. There is still a lack of resolution in seismic imaging methods below and in the surroundings of allochthonous salt bodies. In this work, we present a novel three-dimensional potential-field-data simultaneous inversion method for imaging of salt features. This new approach incorporates a growth algorithm for source estimation, which progressively recovers geological structures by exploring a constrained parameter space; restrictions are posed from a priori geological knowledge of the study area. The algorithm is tested with synthetic data corresponding to a real complex salt-tectonic geological setting commonly found in exploration areas of deepwater Gulf of Mexico. Due to the huge amount of data involved in three-dimensional inversion of potential field data, the use of parallel computing techniques becomes mandatory. In this sen...
Electrochemical electrodes comprise multiple phenomena at different scales. Several works have tr... more Electrochemical electrodes comprise multiple phenomena at different scales. Several works have tried to model such phenomena using statistical techniques. This paper proposes a novel process to work with reduced size images to reconstruct microstructures with the Simulated Annealing method. Later, using the Finite Volume Method, it is verified the effect of the image resolution on the effective transport coefficient (ETC). The method can be applied to synthetic images or images from the Scanning Electron Microscope. The first stage consists of obtaining the image of minimum size, which contains at least 98% of the statistical information of the original image, allowing an equivalent statistical study. The image size reduction was made by applying an iterative decimation over the image using the normalized coarseness to compare the amount of information contained at each step. Representative improvements, especially in processing time, are achieved by reducing the size of the reconst...
34.1 INTRODUCTIONThe current progress in computer technology has allowed for the processing of nu... more 34.1 INTRODUCTIONThe current progress in computer technology has allowed for the processing of numeric schemeswith increasing efficiency and speed; nevertheless, to take advantage of the new technologies likeMMX, SSE3 and the automatic parallelization, it is necessary to write the source code in suchway that the compilers can carry out the necessary optimizations, and to generate specific codefor each processor so that maximum advantage can be taken of the hardware. The current trendis to introduce independent cores of processing in the processors that can work on different codesequencesinformofexecutionthreads.ForexamplethenewIntelquad-coreprocessorcanmanagefour different execution sequences at the same time and, in the future, each core will be enabledwith the hyper treading technology giving a similar performance like six processors integrated ina single chip.Thestructureofthenewcompilersallowsforgeneratingspecificcodefordifferentarchitectures,includingthetechnologyofdualorquadco...
The ejectors are used commonly to extract gases in the petroleum industry where it is not possibl... more The ejectors are used commonly to extract gases in the petroleum industry where it is not possible to use an electric bomb due the explosion risk because the gases are flammable. The steam ejector is important in creating and holding a vacuum system. The goal of this job is to develop an object oriented parallel numerical code to investigate the unsteady behavior of the supersonic flow in the ejector diffuser to have an efficient computational tool that allows modeling different diffuser designs. The first step is the construction of a proper transformation of the solution space to generate a computational regular space to apply an explicit scheme. The second step, consists in developing the numerical code with an-object-oriented parallel methodology. Finally, the results obtained about the flux are satisfactory compared with the physical sensors, and the parallel paradigm used not only reduces the computational time but also shows a better maintainability, reusability, and extensibility accuracy of the code.
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Papers by Carlos Couder