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Keywords: assumption
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1607
... variable. plasticity tensor effective stress potash structure chieslar reservoir characterization stress potential dilation damage response constitutive model upstream oil & gas simulation assumption closure metals & mining compound constitutive model cavern consideration...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2056
.... The analysis shows that under the assumption of a closed boundary scenario, tensile fracturing occurs inside the injection layers, but none of the intersected collapse breccia pipes becomes fractured. Pore pressure transmission vertically inside a collapse breccia pipe leads to their incipient tensile...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2154
... with fracture propagation at field length scales drive the necessity to simplify the problem. The simplifying assumptions in governing equations and/or numerical scheme significantly limit the fidelity of the tool. In this work, we present a numerical simulator that solves the governing equations of hydraulic...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1619
... and the isotropy plane. We present an analytical solution for an elliptical HF in the toughness dominated regime and use it to benchmark our numerical solver. For a TI elastic material, we investigate HF growth for two different assumptions: isotropic material toughness or isotropic critical fracture energy...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1647
... of Mexico. The modeled shale pressure depletion was then converted to strain using assumptions on compressibility. The strain estimates were subsequently compared with the strain measurements data acquired from Formation Compaction Monitoring logging across various sands in several wells in the field...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1848
... deformation as well as the evolution of effectives stress at the fault plane. Reservoir Characterization Upstream Oil & Gas fluid injection simulator Modeling & Simulation Fault Activation mfm method reservoir geomechanics drillstem/well testing pressure change assumption...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2205
... Reservoir Characterization Upstream Oil & Gas wedge stability wedge analysis mass failure identification reservoir geomechanics strength tensor assumption discrete fracture network rock wedge major facility equation rock mass fracture compound wedge 1. INTRODUCTION Rock Wedge...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1634
... assumptions is discussed by adding a hybrid Finite-Discrete Element modeling (FDEM) approach to investigate the stability of the burial holes. reservoir geomechanics strength consideration hydraulic fracturing assumption displacement small diameter hole equivalent continuum model Upstream Oil...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1199
... assumptions of the widely used Hertz- Mindlin model are violated in this type of sediment and the model drastically overpredicts velocities. Our results indicate that the Hertzian contact model should be applied with caution to angular, unconsolidated sediments.The Hertzian contact model is commonly used...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1130
... (s) and pore pressure (Pp), the effective stress s e is defined as the external stress that, if applied in isolation, would produce the same effect as the combination of s and Pp. The usual assumption is that the effective stress for a given property can be described through an effective stress...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0478
... reservoir, the state of stress in both the reservoir and surrounding formations is altered. Conventional analytical solutions used to predict the reservoir stress path assume that deformation occurs only in the vertical direction. Several studies have shown that this is a good assumption if the lateral...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0494
...-through crack propagation assumption and may induce some errors in the fracture toughness measurements. The peak force of the CCNSCB specimens evidently increase with decreased supporting span. For a relatively large span, the crack grows restrictively in the notched ligament, which conforms to the ideal...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0416
... generalized-plane-stress assumptions. The highest change in horizontal in-situ stress is for the case of uniaxial strain condition. Upstream Oil & Gas reservoir geomechanics depletion horizontal stress change specimen in-situ stress pore pressure boundary condition assumption stress change...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0347
... assumption MEQ complex reservoir data mining gbsam fracture orientation stimulation fractured reservoir stimulation permeability geomechanics-based stochastic analysis injection fracture tmeq Ghassemi microseismicity dip direction 1. INTRODUCTION The geometry of fractures has a significant...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0881
... permeability pore pressure permeable sand layer crest assumption mudrock sediment pressure increase 1 1. INTRODUCTION Many hydrocarbon reservoirs are trapped against salt diapirs. The stability and safety of wellbores drilled to produce from these reservoirs are controlled by the pore pressure...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-175
...-fracture domain by permitting two sets of flow constitutive laws and by admitting discontinuities in normal fluid fluxes across fractures to account for matrix-fracture mass exchanges. Based on a transversal uniformity assumption, a novel hybrid-dimensional approach is proposed where factures need...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-843
..., therefore, has potential to significantly improve the value extracted from ultra-low-permeability plays. Upstream Oil & Gas monitor well spatial reasoning pressure change Artificial Intelligence image frac approach observation fracture fracture Scenario assumption hydraulic fracture...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-267
... Abstract: Based on the assumption of Vertical Transverse Isotropy (VTI), we investigated the ultrasonic velocity and anisotropy of organic-rich chalks (ORC). These chalks, from the late Cretaceous Ghareb and Mishash formations in Israel, have a wide range of porosity (0 – 45 PU), high...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-680
... is then to determine which mud weight to use to prevent borehole closure. Reservoir Characterization drilling fluid formulation drilling fluid chemistry drilling fluids and materials Barker viscosity dependency drilling fluid property characteristic viscosity deviatoric stress assumption creep...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-763
... a reservoir management perspective, for example, in order to estimate ultimate recovery or to determine appropriate spacing for infill drilling in a given asset. hydraulic fracturing poroelastic effect reservoir geomechanics assumption production phase mpa reservoir characterization microseismic...

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