... is generally considered a principal stress. Evolution of the maximum and minimum horizontal stresses can be characterized by their respective stress paths, K2 and K1. These stress paths are defined as the variation of effective stress relative to the variation of effective overburden stress, or: '' 2...

... acoustic emission estimation pestman reservoir characterization sandstone application upstream oil & gas orientation munster horizontal stress kenter kaiser effect damage surface reservoir geomechanics field application magnitude drilling operation stress state...

... characterization axis prediction borehole geometry parent hole mpa horizontal stress Copyright 2002, Society of Petroleum Engineers Inc. This paper was prepared for presentation at the SPE/ISRM Rock Mechanics Conference held in Irving, Texas, 20-23 October 2002. This paper was selected for presentation...

... are in the direction perpendicular to the well trajectory, or in other words, the well should be drilled in the direction of the maximum horizontal stress. There are several ways one may try to determine the direction of the initial maximum horizontal stress in reservoir rock: Conceptual restoration of structural...

... Abstract A Mohr-Coulomb failure criterion is applied to estimate fluid pressures that may cause fault reactivation during the depletion of hydrocarbon reservoirs. The estimates incorporate the decline in total minimum horizontal stress that accompanies fluid pressure depletion in hydrocarbon...

... derived from laboratory measurements and log data to build the full geomechanical model, which was then used as a basis to predict wellbore stability during reservoir depletion. horizontal stress wellbore stability upstream oil & gas breakout stability strength pore pressure aiba...

... fracture fracture gradient wellbore design hydraulic fracturing well control circulation horizontal stress pore pressure wellbore integrity annular pressure drilling fracture initiation upstream oil & gas geometry formation permeability permeability xlot spe isrm 78219 tvd leak-off...

... of linear elasticity. One of the principal stresses is vertical stress SV, hence the other two principal stresses are major and minor horizontal stresses, SHmax and Shmin. We consider a borehole of deviation angle , and azimuth (relative to the maximum horizontal stress axis) which runs through...

... at any given porosity. For reservoirs in which the vertical stress is larger than the two horizontal stresses, there is also a potential to induce normal faulting in a depleting reservoir when the change of minimum horizontal stress, ?S h , exceeds a critical fraction of ?P p (the change in formation...