... despite the ongoing extension. When salt underlies the sediment basin, a salt roller develops at the location of the fault and minimizes sediment rollover in the hanging wall. Loading from the rising diapir increases horizontal stress in the hanging wall. The angled salt face also transmits higher...

.... Models are drained and use poro-elastic material behavior for the sediments and viscoplastic behavior for the salt. We found that both models show a horizontal stress reduction above the salt diapir that was targeted by an exploratory well. These results where validated by the data coming from...

.... In this paper we present a 2D evolutionary large strain finite element model of a salt diapir in an idealized layered evaporite sequence (LES). Gravitational loading and sedimentation provide the driving force for halokinesis. Salt is assigned a temperature-dependent non-Newtonian rheology, whereas...

... ABSTRACT: We study the effects of a highly permeable sand layer on pore pressure and stresses near a salt diapir by using a forward hydro-mechanical finite-element model. We compare a salt basin entirely composed of mudrocks to the same basin but with a highly permeable sand layer across its...

... amongst others. A numerical study is presented, which investigates the criticality of a group of faults in the crest of a diapir in order to optimize well trajectories and reduce drilling risks of exploratory/appraisal wells targeting a pre-salt reservoir. The model allows determining and assessing fault...

... the weld as the weld tip propagates along the weld. When the source layer welds, salt flow from diapir pedestal into diapir stops, resulting in a hydrostatic salt pressure. This pressure is less than the overburden stress in sediments over the pedestal. In fact, the salt in the pedestal supports only part...

... artificial intelligence volumetric plastic strain configuration geological structure deformation robert upstream oil & gas state variable modeling algorithm structural geology diapir evolution reservoir characterization application crook geometry modification deformation...

... salt stress proceedings horizontal stress reservoir geomechanics elevation structural geology upstream oil & gas diapir shear stress wall rock nikolinakou modeling emplacement basin evolution sedimentation stress change salt sheet reservoir characterization salt diapir...

... is essential for determining the current strength and deformation characteristics of mudrocks [14]. Here, we compare the poro-elastoplastic stress changes around a salt diapir, as predicted by a static analysis, using AbaqusTM [15] and by an evolutionary analysis, using Elfen [16]. Sanz et al. [17] discuss...

... in Mirren Field, North Sea. Similarly, Koupriantchik et al. [23] showed that it is possible to use stress modelling of salt diapirs to predict zones of likely wellbore instability. Fredrich et al. [18] showed that a significant fracture gradient reduction could be predicted below salt at the Spa Prospect...

... Reservoir Characterization video monitoring diapir growth solid waste management cohesion structural geology Plexiglass thikness Upstream Oil & Gas resistance threshold fringe evolution diapir safety factor grey clay situ time scale interface plane interface centrifuge...