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Keywords: propagate
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1729
... fracture network. In this paper, a two-dimensional fracture propagation model is developed. The finite-discrete element method is used to describe the propagation of the fractures. In this model, the rock matrix units are discretized to obtain a discrete fracture network (DFN). The natural fractures...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1296
... the casing string up to the TOC line while considering the various wellbore parameters through the use of a finite element model that includes gas hydraulic microannuli fracture propagation. A case study of a Gulf of Mexico was performed and showed that the cement sheath can experience debonding up...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1726
... strength Thickness model material investigation interface propagate specimen fracture soft layer hydro-fracturing breakdown pressure bedding plane angle propagation 1. INTRODUCTION Hydraulic fracturing is the simplest technique used for increasing the production rate in reservoirs with low...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2073
... to obtain fracture complexity in the absence of any reservoir heterogeneity. We show that competing fracture propagation can induce a heterogeneous stress state in the rock. This new heterogeneous stress state is induced by the spatial variation of the stress shadow of the propagating fractures. Multiple...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2032
... ABSTRACT: The present paper summarizes the results and implications of a laboratory study designed to measure the propagation velocity of hydraulic fractures created with low viscosity fluids. Hydraulic fracture experiments were conducted in acrylic blocks with low viscosity ink (2 cP...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-869
... reservoir geomechanics geomechanical characterization rock property propagate Reservoir Characterization Upstream Oil & Gas fractured formation Alberta maximum horizontal stress propagation stress anisotropy hydraulic fracture horizontal stress fracture natural fracture fracture network...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-872
... ABSTRACT: Unconventional petroleum resources occur in formations that are layered and or contain natural fractures posing challenges to modeling of reservoir stimulation. In this paper, we use a 3D fully coupled hydro-mechanical model to analyze hydraulic fracturing propagation in a layered...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0559
.../analytical models with finite element method software such as COMSOL Multiphysics. Further work will be required for improving enhanced geothermal production by optimizing hydro-shearing practices. 1. INTRODUCTION hydraulic fracturing displacement propagate fracture propagation Mohsen Bazargan...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0504
.... The second half is then cast against the first half. Sandpaper attached to the PVC block provides different friction at the interface and, using a debonding agent, a cohesionless contact is obtained. In the experiments, digital image correlation (DIC) is used to monitor crack initiation and propagation...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-494
... Abstract: We have developed a fluid-coupled algorithm for modeling reorientation of longitudinal fractures propagating from a wellbore aligned with the intermediate or maximum far-field stress direction. A two-dimensional plane-strain model is adopted. The rock deformation solver...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-275
... a significant overpressure. Thus, a competition is initiated between dissipation of fluid overpressure and sedimentation rate. The overpressure decreases in horizontal effective stress and may result in fracture initiation. The present study deals with the propagation of natural fractures in seal formations...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-362
... propagation and the limit at which a mode-1 fracture cannot advance. We found that a hydraulically induced vertical fracture from CO2 injection is more likely to propagate horizontally than vertically, remaining contained in the storage zone. The horizontal fracture propagation will have a positive effect...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-061
... formation? To consider the impacts of support pressure on the breakout pattern, the two failure modes were considered, namely: shear fracture and extensile-splitting induced breakouts. Minimum strain energy criterion was used in determining the direction of the propagating extensile cracks...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-572
... Abstract Hydraulic fracturing is widely employed to stimulate oil and gas reservoirs to increase the productivity of these naturally fissured rock domains. Different numerical techniques are available to examine how hydraulic fractures propagate. They are mainly categorized into continuum...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-329
.... In addition, an already formed fracture will attract a newborn fracture at a short distance, but repel it at a longer distance. Based on the calculation above, guidance can be provided for optimization of fracture distributions for multi -staged fracturing treatments. propagate numerical simulation...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-229
... Abstract The dynamic behavior of crack propagation and coalescence in rock is investigated using the distinct lattice spring model (DLSM). Discontinuum based element model has been proven as a promising tool in the study of dynamic fracture in brittle materials like rock. As a newly developed...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-449
... fracture geometry, are fracture height and out of plane propagation. Although the modeling of hydraulically driven fractures in such a medium has been advanced over the past decades, there have been a few attempts to investigate these two phenomena together in an implicit model. This article advances...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7258
... network fracture propagation Artificial Intelligence displacement propagate junction algorithm time step boundary traction force rock block interaction fracture hydraulic fracture shear failure fracture mechanics model 1. INTRODUCTION Currently, hydraulic fracturing treatments...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-617
... shows that fluid pressure evolution, CO 2 saturation, fracture opening, propagation and coalescence are strongly dependent on the initial damage and its propagation in caprocks. It is concluded that the initial damage in caprock is very harmful to its stability since the fluid driven by CO 2 injection...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-673
...-cracks roughly initiate at 50% of ultimate stress near the contact boundary then propagate slowly until the peak is reached. After the ultimate stress is reached, the mico-cracks start to form macro-cracks and the failure of layered rock under Brazilian test can classified into four modes: (a) Split...

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