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Keywords: fraction
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0139
... reservoir geomechanics Upstream Oil & Gas hydraulic fracturing fracture analysis stress state fraction reconstruction well logging local variation horizontal stress stress polygon elastic moduli CRIT log analysis effective elastic moduli Zoback Symposium estimation Dubinya conductive...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0125
... property casing and cementing tensor coefficient flow in porous media Fluid Dynamics porosity fraction homogenization poroelastic parameter hydration Skempton coefficient agofack cement formulation Upstream Oil & Gas zaoui cemconre cement paste Microstructure cement chemistry...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-207
... to the high value range only. Most importantly, the contrast of target and background increases from 0.1216 to 0.2118 and the volume fraction of micro-cracks increases from 1.25 % to 4.02 %, which show that the segmentation after processing is more accurate. All the observation and evaluation parameters show...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-106
... of the rocks and the corresponding stress state. reservoir geomechanics approximation deviation coefficient hydraulic fracturing volumetric strain radial stress differential stress experimental result fraction Upstream Oil & Gas Reservoir Characterization Rock mechanics stress state...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-165
..., the presence of a few percent in volume fraction of fine particles can reduce permeability by an order of magnitude. enhanced recovery sand control drilling operation Screen Selection wellbore integrity Wellbore Design Reservoir Characterization flow in porous media injector size distribution...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-052
... & Gas input parameter indentation moduli stiffness matrix matrix multiscale model kerogen random variable elastic property consolidated clay fraction stiffness tensor 1. INTRODUCTION Organic-rich shales are multiphase geo-materials exhibiting multi-scale microstructure, highly...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0515
... learning Efficiency pore mean increase extraction algorithm topology optimization problem entire domain size distribution conductivity fraction Reservoir Characterization complex reservoir nakagaki preferred path pore size variability organism constructal theory edge radius Standard...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0568
... were performed to obtain probability density functions (PDFs) of the area, solidity, coordination number, orientation, elongation and roundness of the grains, as well as the PDFs of the branch lengths, branch orientations and solid volume fraction, defined locally over polygons with edges matching...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0679
... ABSTRACT: We propose an interfacial contact/damage model for simulating dynamic fracture in rocks. An interfacial damage parameter, D, models the evolution of damage on fracture interfaces, while relative contact and contact-stick fractions model contact-separation and stick-slip transitions...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-413
... Abstract: We applied a normal stress (s n = 0 - 12.8 psi) to a transparent deformable fracture to investigate the behavior of sand-fiber mixtures. Using light transmission techniques, we quantified the sand volume fraction ? s throughout the experiment. In the absence of an applied...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-460
... reservoir geomechanics Upstream Oil & Gas layer thickness layered reservoir hydraulic fracturing peak differential stress fracture containment mechanical property fraction stiffness layered rock friction coefficient Hydrostone 1. INTRODUCTION Oil and gas production from unconventional...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-398
... with a specific solid volume fraction [1]. The rheology specified by such expressions is then typically used to calibrate a power-law based rheological model [2]. However, work by Lyon & Leal has shown that even in a relatively simple poiseuille flow the distribution of solid particulates is not uniform...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-026
... interface, for instance using an ALE (Arbitrary Lagrangian-Eulerian) method [4]. The second uses a Diffuse Interface Model (DIM) to smooth the interface with continuous quantities [1, 3, 6 ], like the liquid phase volume fraction, species mass fractions, etc. However, there are several difficulties...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7434
... issues for water injection at the reservoir scale. The objective of this study is to provide a model for a channel initiation/propagation during injection and flowback in injection wells. A finite volume model is developed based on multiphase fraction volume concept that decomposes porosity into mobile...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-504
... pore fluid concentration hydration osmosis drilling fluid concentration fraction 1. OVERVIEW The issue of wellbore stability in the oil drilling engineering is a common problem. The wellbore stability of non-expansion rock has been analyzed deeply by many scholars [1-3] . During drilling...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-494
... ABSTRACT: This paper presents an analytical solution to quantify the uncertainty of volumetric fraction ( Vf ) estimates in a heterogeneous material using 2-D probes. The analytical solution was derived based upon the concept of representative volume (RVE). The results show...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-214
... by fluid production or injection. reservoir simulation calculation mathematical formulation reservoir geomechanics Reservoir Characterization fluid flow effect porosity Upstream Oil & Gas normal stress compressibility simulator fraction stress change equation finite-difference...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-421
... of resources from the earth. Because of the stickiness of clay fraction in a fissile material such as Shale and its negative impact on drilling and hydraulic fracturing of gas shale, the author in this paper offers a theoretical approach based on Gibbs’ Free Energy and a specific Hydration or Swelling Index...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-322
... of a specimen in which we know something about the volume fractions of various phases, elastic moduli of each phase, and geometrical details. In general we will have knowledge of the volume fractions and the phase elastic moduli. The geometry is solved for by curve-fitting the measured moduli with various...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-345
... ABSTRACT An analytical solution on the uncertainty in the estimates of volumetric fraction of different compositions in a Bimrock is presented in this paper. The derivation was developed based upon the concept of representative volumes. To tackle the anisotropic orientation of blocks...

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