... reservoir characterization strength coulomb failure criterion ruhr sandstone sample linear friction envelope reservoir geomechanics strain-rate dependence failure criterion byerlee principal stress upstream oil & gas criteria sandstone experimental study structural geology...

... of borehole data allows recovering of both principal stress directions and magnitudes, as well as accounts for the stress variations with depth as long as these variations can be described with a linear function of depth. We apply such inversion to the data from the well-studied geothermal site at Soultz-sous...

... ABSTRACT Half-moon events are the predominately observed source mechanism during hydraulic fracturing. We explain, that special stress conditions are needed to produce these events, for instance close principal stresses and notable shear stresses. Using a numerical simulation we show how...

... reservoir geomechanics reservoir characterization input parameter depth-dependent fault slip upstream oil & gas van der baan slip direction failure criterion fault slip fault reactivation shear stress reactivation plane seg international exposition safety distance principal stress annual...

... general tendencies in hydraulically conductive fractures’ patterns being observed. Presentation Date: Wednesday, September 18, 2019 Session Start Time: 8:30 AM Presentation Start Time: 11:00 AM Location: 305 Presentation Type: Oral stress state stress field principal stress orientation...

..., which needs further interpretation. Based on the resulting source mechanisms, orientations of three principal stresses were estimated. Observed linear alignments within the spatial distribution of microseismic events aided in identifying the fault plane. Presentation Date: Thursday, October 18, 2018...

... principal stress directions. Notably, we show that inducing slip on horizontal or sub-horizontal bedding planes is nearly impossible except in compressive (reverse to strike-slip/reverse) stress states (S = S ˜ S) or when ambient pore pressure is extremely high. The latter case results in very small...

... microseismic event principal stress annual meeting optical fiber cable pore pressure das production logging production monitoring simultaneous use production control stimulation fracture hydraulic stimulation reservoir characterization hydraulic fracturing microseismic monitoring strain...

... ABSTRACT Economic production from tight shale formations entails increasing the surface area in contact with the reservoir via hydraulic fracturing. Important to the design of efficient hydraulic fractures is knowledge of the orientation and magnitude of principal stresses and geomechanical...

... of the measurement) identical with the strike of the location trend. Finally, regional principal stress directions were inverted from the source mechanisms. The least principal stress 3 is perpendicular to the strike of the trend of the locations, indicating that the hydraulic fracture propagated in the direction...

..., 2016 Start Time: 3:45:00 PM Location: 156 Presentation Type: ORAL principal stress caprock integrity reservoir characterization coefficient fracture weakness maximum horizontal stress anisotropic stress field characterization minimum horizontal stress horizontal stress vertical...

... in time (4D geomechanical basin modeling) enables us to identify fracture orientation based on failure criteria and direction of minimum principal stresses which together with the structural geometry and rock physics modeling can be transformed into the anisotropic elastic stiffness tensor and its...

... spatial variation propagation fracture compliant layer numerical modeling nucleation differential stress seg houston 2013 hydraulic fracturing upstream oil & gas principal stress microseismic event modeling complex reservoir Numerical modeling of the role of lithological layering...

... Summary The orientation and size of fractures created during hydraulic stimulation is governed by the in-situ stress state. Reservoir production changes both the magnitude and the direction of the principal stresses, and these stress changes can be calculated using a geomechanical model...

... Summary A new inversion algorithm yields estimates of the maximum and minimum horizontal stresses using radial profiles of the three shear moduli referred to an orthogonal set of axes defined by the three principal stress directions. This algorithm inverts differences in the far-field shear...

... microseismic cloud diffusivity failure criterion cloud seg houston 2009 pore fluid pressure coupling friction upstream oil & gas principal stress reservoir characterization microseismicity shapiro international exposition injection rate anisotropic diffusivity equation...

...-linear elastic theory holds true (2) the background medium is isotropic (3) the medium under stress is elliptical orthorhombic and (4) plane waves propagate in the medium, the FSA coincides with the maximum normal stress direction orthogonal to the borehole (”maximum sub- sidiary principal stress”) as we...

... lateral earth stress reservoir geomechanics international exposition rock mass lateral strain experiment seg houston 2009 shear stress reservoir characterization deformation principal stress upstream oil & gas horizontal elastic strain horizontal stress strain energy elastic...

... & gas excavation mine-by experiment principal stress test tunnel borehole NS 5.4 Cross-Hole Seismic Tomography Surveys for the Mine-by Experiment J.G. Hayles*, M.H. Serzu, G.S. Lodha and R.S. Read Atomic Energy of Canada Ltd. Sum m ary The Mine-by Experiment used a 3.5-m diameter test tunnel...

... ABSTRACT No preview is available for this paper. s-wave velocity principal effective stress accelerometer biaxial confinement principal stress structural anisotropy principal stress direction wave propagation upstream oil & gas particle motion engineering 2 131 effective...