Abstract Sedimentation and erosion processes in sedimentary basins can be modeled by a parabolic equation with a limiter on the fluxes and a constraint on the time variation. This limiter happens to satisfy a stationary scalar hyperbolic inequality, within a constraint, for which we prove the existence and the uniqueness of the solution. Actually, this solution is shown to be the maximal elemen...

In geophysical exploration different types of measurements are used to probe the same subsurface region. In this paper we show that the wavelet transform can aid the process of linking different data types. The continuous wavelet transform, and in particular the analysis of amplitudes along wavelet transform modulus maxima lines, is a powerful tool to analyze the characteristic properties of lo...

Marc Schoenauer1, Andreas Ehinger2 and Bertrand Braunschweig3 (1) : CMAP, CNRS-URA 756, Ecole Polytechnique, Palaiseau, France (2) : Geophysics and Instrumentation, IFP, Pau, France (3) : Computer Science and Applied Mathematics, IFP, Rueil-Malmaison, France E-mails : [email protected], fandreas.ehinger,[email protected] Abstract Many problems to be solved in geophysi...

14 The Geological Surveying and Investigation in 3 Dimensions (GSI3D) software tool and 15 methodology has been developed over the last 15 years. Since 2001 this has been in 16 cooperation with the British Geological Survey (BGS). To-date over a hundred BGS 17 geologists have learned to use the software that is now routinely deployed in building 18 systematic and commercial 3D geological models...

The Geological Survey of the Netherlands (GSN) systematically produces 3D stochastic geological models of the Dutch subsurface. These voxel models are regarded essential in answering subsurface-related questions on, for example, aggregate resource potential, groundwater flow, land subsidence hazard and the planning and realization of large-scale infrastructural works. GeoTOP is the most recent ...

We present a reservoir simulation scheme that gives accurate resolution of both large-scale and fine-scale flow patterns. The method uses a mixed multiscale finite-element method (MMsFEM) to solve the pressure equation on a coarse grid and a streamline-based technique to solve the fluid transport on a fine-scale subgrid. Through this combination, we aim towards a numerical scheme that facilitat...

1. Abstract We propose a method to interactively modify contacts between surfaces in a 3D boundaryrepresentation geological model. The modification is based on a hierarchy between a slip surface (a surface that other surfaces can slide along, which in geology could include faults, erosion surfaces, salt tops) and a secondary, deformable surface (e.g. horizon, older fault). The border of the def...

This study evaluates alternative groundwater models with different recharge and geologic components at the northern Yucca Flat area of the Death Valley Regional Flow System (DVRFS), USA. Recharge over the DVRFS has been estimated using five methods, and five geological interpretations are available at the northern Yucca Flat area. Combining the recharge and geological components together with a...

Reservoir simulation is ubiquitous in the petroleum industry, and conditioning models to production data (history matching) has become an essential job of reservoir engineers. Traditional history matching methods directly perturb reservoir properties without regard to the existing geological continuity. When the geological heterogeneity is destroyed, the result is often a history-matched model ...