Summary We present a novel level set technique for shape reconstruction in history matching for n... more Summary We present a novel level set technique for shape reconstruction in history matching for non-conventional reservoirs. These reservoirs consist of several regions with dierent materials, e.g., shale or sand. The goal is to use the production data in order to estimate the unknown shapes and structure of these regions in the reservoir. Mathematically, we formulate this situation as an
ABSTRACT The problem of reconstructing images from measurements at the boundary of a domain belon... more ABSTRACT The problem of reconstructing images from measurements at the boundary of a domain belong to the class of inverse problems. In practice, these measurements are incomplete and inaccurate leading to ill-posed problems. This means that ‘exact’ reconstructions are usually not possible. In this Introduction the reader will find some applications in which the main ideas about stability and resolution in image reconstruction are discussed. We will see that although different applications or imaging modalities work under different physical principles and map different physical parameters, they all share the same mathematical foundations and the tools used to create the images have a great deal in common. Current imaging problems deal with understanding the trade off between data size, the quality of the image and the computational tools used to create the image. In many cases, these tools represent the performance bottleneck due to the high operational count and the memory cost.
... Diego Álvarez Corresponding Author Contact Information , a , E-mail The Corresponding Author ... more ... Diego Álvarez Corresponding Author Contact Information , a , E-mail The Corresponding Author , Oliver Dorn a , E-mail The Corresponding Author , Natalia Irishina a , E-mail The Corresponding Author and Miguel Moscoso a , E-mail The Corresponding Author. ...
In this paper, we present a method for computing direct numerical simulations of narrow optical b... more In this paper, we present a method for computing direct numerical simulations of narrow optical beam waves propagating and scattering in a plane-parallel medium. For these computations, we use Fourier and Chebyshev spectral methods for three-dimensional ...
Our goal is to develop an inversion algorithm for reconstructing the shape of 3D breast tumors us... more Our goal is to develop an inversion algorithm for reconstructing the shape of 3D breast tumors using electromagnetic data. The method of moments (MoM) forward solver is used to calculate the electric and magnetic equivalent surface currents at the tumor interface and consequently the scattered electromagnetic fields. Using a so-called “adjoint scheme” for gradient calculation, the mismatch between calculated and
This paper describes the application of the adjoint method to the history matching problem in res... more This paper describes the application of the adjoint method to the history matching problem in reservoir engineering. The history matching problem consists in adjusting a set of parameters, in this case the permeability distribution, in order to match the data obtained with the simulator to the actual production data in the reservoir. Several numerical experiments are presented which show that
Summary We present a novel level set technique for shape reconstruction in history matching for n... more Summary We present a novel level set technique for shape reconstruction in history matching for non-conventional reservoirs. These reservoirs consist of several regions with dierent materials, e.g., shale or sand. The goal is to use the production data in order to estimate the unknown shapes and structure of these regions in the reservoir. Mathematically, we formulate this situation as an
ABSTRACT The problem of reconstructing images from measurements at the boundary of a domain belon... more ABSTRACT The problem of reconstructing images from measurements at the boundary of a domain belong to the class of inverse problems. In practice, these measurements are incomplete and inaccurate leading to ill-posed problems. This means that ‘exact’ reconstructions are usually not possible. In this Introduction the reader will find some applications in which the main ideas about stability and resolution in image reconstruction are discussed. We will see that although different applications or imaging modalities work under different physical principles and map different physical parameters, they all share the same mathematical foundations and the tools used to create the images have a great deal in common. Current imaging problems deal with understanding the trade off between data size, the quality of the image and the computational tools used to create the image. In many cases, these tools represent the performance bottleneck due to the high operational count and the memory cost.
... Diego Álvarez Corresponding Author Contact Information , a , E-mail The Corresponding Author ... more ... Diego Álvarez Corresponding Author Contact Information , a , E-mail The Corresponding Author , Oliver Dorn a , E-mail The Corresponding Author , Natalia Irishina a , E-mail The Corresponding Author and Miguel Moscoso a , E-mail The Corresponding Author. ...
In this paper, we present a method for computing direct numerical simulations of narrow optical b... more In this paper, we present a method for computing direct numerical simulations of narrow optical beam waves propagating and scattering in a plane-parallel medium. For these computations, we use Fourier and Chebyshev spectral methods for three-dimensional ...
Our goal is to develop an inversion algorithm for reconstructing the shape of 3D breast tumors us... more Our goal is to develop an inversion algorithm for reconstructing the shape of 3D breast tumors using electromagnetic data. The method of moments (MoM) forward solver is used to calculate the electric and magnetic equivalent surface currents at the tumor interface and consequently the scattered electromagnetic fields. Using a so-called “adjoint scheme” for gradient calculation, the mismatch between calculated and
This paper describes the application of the adjoint method to the history matching problem in res... more This paper describes the application of the adjoint method to the history matching problem in reservoir engineering. The history matching problem consists in adjusting a set of parameters, in this case the permeability distribution, in order to match the data obtained with the simulator to the actual production data in the reservoir. Several numerical experiments are presented which show that
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Papers by Miguel Moscoso