... stress Wellbore Design salt uncertainty creep closure Upstream Oil & Gas parametric analysis Symposium borehole diameter constitutive model borehole closure drilling operation salt creep salt body creep open-hole exposure time closure salt type 1. INTRODUCTION Salt rock...

... Abstract: Large carbonate or anhydrite inclusions are embedded in many salt bodies (so-called rafts, floaters or stringers) and these respond to the movements of the salt in a variety of ways, including displacement, folding and fracturing. The movement and deformation of those embedded...

... model Mean stress reservoir geomechanics shear-induced pore pressure geomechanical modeling salt body effective stress prediction workflow stress state overpressure Upstream Oil & Gas pore pressure Nikolinakou merrell equivalent stress target field pressure prediction shear stress...

... acquisition schemes aim at improving our ability to image steeply dipping and overhanging salt-bodies, as well as sub-salt reflectors. In this context, these imaging applications have benefited greatly from the application of wide azimuthal raycoverage acquisition patterns and processing the data...

... of stresses around the salt body can be ignored, or that rock properties are laterally constant are generally erroneous. Three-dimensional (3D) numerical simulation techniques have been developed for solving a complex set of equations with appropriate boundary conditions needed to estimate stresses and fluid...

... Abstract: Drilling through salt zones is an important current endeavor in many areas offshore of Brazil. The conventional well design workflow does not recognize the complex nature of the stress field near these salt bodies. Therefore, a reliable assessment of the in-situ stresses must...

... Abstract: Our study shows that large salt bodies push laterally and elevate the horizontal stresses in front of salt and in minibasins. We built in ABAQUS 2-dimensional finite-element models of the Mad Dog field, deepwater northern Gulf of Mexico. We used wide-azimuth, PreStack DepthMigrated...

... ABSTRACT: We develop finite-element models to simulate stresses around salt bodies, and use these results to calculate wellbore stability and optimal mud weights for a vertical wellbore near these salt bodies. In the finite-element models, salt bodies are simulated by viscoelastic material...

... ABSTRACT: Two major aspects in the description of a stress pattern are the effective stress ratio and tectonic factor. This paper presents two case studies focusing on the stress pattern around salt bodies in the deepwater. The salt body geometries are modeled on the basis of a set...

... ABSTRACT The goals of this work include reviewing the phenomena of stress rotation in the presence of faulting, salt bodies, and non-uniform distribution of physical rock properties, pore pressure, and tectonic deformation; numerically simulating the stress-field distribution for these cases...

...) adjacent or intruding salt bodies, 2) depletion, compaction, and subsidence of highporosity reservoirs, 3) reactivation of faults or discontinuities, and 4) complex tectonic active regions. Examples reported in the literature include the deep water subsalt in the Gulf of Mexico, offshore Angola, Brazil...

... ABSTRACT We use elastoplastic geomechanical models (Modified Cam Clay) to predict how stresses and pore pressures evolve in mudstones bounding a salt body. We show that the loading caused by visco-elastic salt relaxation processes can induce pore pressure perturbations that extend kilometers...

...1. INTRODUCTION Significant amount of exploration, development, and production is taking place near salt bodies around the world, including the deepwater Gulf of Mexico (GoM), Middle East, North Sea, offshore Brazil, North Caspian Sea, and North and West Africa. Kashagan field, located...